| Network Working Group | L. Xia |
| Internet-Draft | G. Zheng |
| Intended status: Standards Track | Huawei |
| Expires: July 29, 2018 | January 25, 2018 |
The Data Model of Network Infrastructure Device Data Plane Security Baseline
draft-xia-sacm-nid-dp-security-baseline-01
This document proposes one part of the security baseline YANG for network infrastructure device (i.e., router, switch, firewall, etc): data plane security baseline. The companion documents [I-D.ietf-lin-sacm-nid-mp-security-baseline], [I- D.ietf-dong-sacm-nid-infra-security-baseline] cover other parts of the security baseline YANG for network infrastructure device respectively: management plane security baseline, infrastructure layer security baseline.
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Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress."
This Internet-Draft will expire on July 29, 2018.
Copyright (c) 2018 IETF Trust and the persons identified as the document authors. All rights reserved.
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Network security is an essential part of the overall network deployment and operation. Due to the following reasons, network infrastructure devices (e.g. switch, router, firewall) are always the objective and exploited by the network attackers, which bring damages to the victim network:
Therefore, the importance of ensuring the security of the network infrastructure devices is out of question. To secure the network infrastructure devices, one important task is to identify as far as possible the threats and vulnerabilities in the device itself, such as: unnecessary services, insecure configurations, abnormal status, etc, then enforce the corresponding security hardening measurements, such as: update the patch, modify the security configuration, enhance the security mechanism, etc. We call this task the developing and deploying the security baseline for the network infrastructure, which provides a solid foundation for the overall network security. This document aims to describe the security baseline for the network infrastructure, which is called security baseline in short in this document.
Basically, security baseline can be designed and deployed into different layers of the devices:
The security baseline varies according to many factors, like: different device types (i.e., router, switch, firewall), the supporting security features of device, the specific security requirements of network operator. It's impossible to design a complete set for it, so this document and the companion ones are going to propose the most important and universal points of them. More baseline contents can be added in future following the data model scheme specified.
[I-D.ietf-birkholz-sacm-yang-content] defines a method of constructing the YANG data model scheme for the security posture assessment of the network infrastructure device by brokering of YANG push telemetry via SACM statements. The basic steps are:
In this document, we follow the same way as [I-D.ietf-birkholz-sacm-yang-content] to define the YANG output for network infrastructure device security baseline posture based on the SACM information model definition [I-D.ietf-sacm-information-model].
The following contents propose part of the security baseline YANG output for network infrastructure device: data plane security baseline. The companion documents [I-D.ietf- dong-sacm-nid-cp-security-baseline], [I-D.ietf-lin-sacm-nid-mp-security-baseline], [I-D.ietf-xia-sacm-nid-app-infr-layers-security-baseline] cover other parts of the security baseline YANG output for network infrastructure device respectively: control plane security baseline, management plane security baseline, application layer and infrastructure layer security baseline.
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in [RFC2119].
This document uses the terms defined in [I-D.draft-ietf-sacm-terminology].
A simplified graphical representation of the data model is used in this document. The meaning of the symbols in these diagrams is as follows:
As the network infrastructure device, it makes decision of the forwarding path based on the IP/MAC address and sends the packet in data plane.The NP or ASIC are the main components for the data plane functions.
This section describes the key data plane security baseline of the network infrastructure devices, and defines their specific data models.
Mac table is the key resource in terms of layer 2 forwarding, also easily attacked by learning massive invalid mac address. The mac limit function is to protect the mac table by limiting the maximum number of learned mac address in appointed interfaces. The mac address is not learned and the packet is discarded when the up-limit is reached, and the alarm is created possibly.
If the broadcast traffic is not suppressed in layer 2 network (i.e., Ethernet), a great amount of network bandwidth is consumed by a great deal of broadcast traffic. The network performance is degraded, even interrupting the communication.In such a case, configuring the broadcast traffic suppression on the device to ensure some bandwidth can be reserved for unicast traffic forwarding when broadcast traffic bursts across the network.It's flexible to configure the device to suppress broadcast, multicast, and unknown unicast traffic on an interface, a specified interface in a VLAN, a sub-interface, and over a virtual switch instance (VSI) pseudo wire (PW).
module: ietf-mac-limit
+--rw mac
+--rw macLimitRules
| +--rw macLimitRule* [ruleName]
| +--rw ruleName string
| +--rw maximum uint32
| +--rw rate? uint16
| +--rw action? macLimitForward
| +--rw alarm? macEnableStatus
+--rw vlanMacLimits
| +--rw vlanMacLimit* [vlanId]
| +--rw vlanId macVlanId
| +--rw maximum uint32
| +--rw rate? uint16
| +--rw action? macLimitForward
| +--rw alarm? macEnableStatus
+--rw vsiMacLimits
| +--rw vsiMacLimit* [vsiName]
| +--rw vsiName string
| +--rw maximum uint32
| +--rw rate? uint16
| +--rw action? macLimitForward
| +--rw alarm? macEnableStatus
+--rw bdMacLimits
| +--rw bdMacLimit* [bdId]
| +--rw bdId uint32
| +--rw maximum uint32
| +--rw rate? uint16
| +--rw action? macLimitForward
| +--rw alarm? macEnableStatus
+--rw pwMacLimits
| +--rw pwMacLimit* [vsiName pwName]
| +--rw vsiName string
| +--rw pwName string
| +--rw maximum uint32
| +--rw rate? uint16
| +--rw action? macLimitForward
| +--rw alarm? macEnableStatus
+--rw ifMacLimits
| +--rw ifMacLimit* [ifName limitType]
| +--rw ifName pub-type:ifName
| +--rw limitType limitType
| +--rw ruleName? -> /mac/macLimitRules/macLimitRule/ruleName
| +--rw maximum uint32
| +--rw rate? uint16
| +--rw action? macLimitForward
| +--rw alarm? macEnableStatus
+--rw ifVlanMacLimits
| +--ro ifVlanMacLimit* [ifName vlanBegin limitType]
| +--ro ifName pub-type:ifName
| +--ro vlanBegin macVlanId
| +--ro vlanEnd? macVlanId
| +--ro limitType limitType
| +--ro ruleName? -> /mac/macLimitRules/macLimitRule/ruleName
| +--ro maximum uint32
| +--ro rate uint16
| +--ro action? macLimitForward
| +--ro alarm? macEnableStatus
+--rw subifMacLimits
| +--rw subifMacLimit* [ifName limitType]
| +--rw ifName pub-type:ifName
| +--rw limitType limitType
| +--ro vsiName string
| +--rw ruleName string
| +--rw maximum uint32
| +--rw rate? uint16
| +--rw action? macLimitForward
| +--rw alarm? macEnableStatus
+--rw vsiStormSupps
| +--rw vsiStormSupp* [vsiName suppressType]
| +--rw vsiName string
| +--rw suppressType suppressType
| +--rw percent? uint64
| +--rw packets? uint64
| +--rw cir? uint64
| +--rw cbs? uint64
+--rw vlanStormSupps
| +--rw vlanStormSupp* [vlanId suppressType]
| +--rw vlanId macVlanId
| +--rw suppressType suppressType
| +--rw percent? uint64
| +--rw packets? uint64
| +--rw cir? uint64
| +--rw cbs? uint64
+--rw pwSuppresss
| +--rw pwSuppress* [vsiName pwName suppressType]
| +--rw vsiName string
| +--rw pwName string
| +--rw suppressType suppressType
| +--rw percent? uint64
| +--rw packets? uint64
| +--rw cir? uint64
| +--rw cbs? uint64
+--rw vsiTotalNumbers
| +--ro vsiTotalNumber* [vsiName slotId macType]
| +--ro vsiName string
| +--ro slotId string
| +--ro macType macType
| +--ro number uint32
+--rw ifStormSupps
| +--rw ifStormSupp* [ifName suppressType]
| +--rw ifName pub-type:ifName
| +--rw suppressType suppressType
| +--rw direction directionType
| +--rw percent? uint64
| +--rw packets? uint64
| +--rw cir? uint64
| +--rw cbs? uint64
+--rw ifStormBlocks
| +--rw ifStormBlock* [ifName blockType direction]
| +--rw ifName pub-type:ifName
| +--rw blockType suppressType
| +--rw direction directionType
+--rw ifStormContrls
+--rw ifStormContrl* [ifName]
+--rw ifName pub-type:ifName
+--rw action? stormCtrlActionType
+--rw trapEnable? enableType
+--rw logEnable? enableType
+--rw interval? uint64
+--rw ifPacketContrlAttributes
| +--rw ifPacketContrlAttribute* [packetType]
| +--rw packetType stormCtrlType
| +--rw rateType? stormCtrlRateType
| +--rw minRate uint32
| +--rw maxRate uint64
+--rw ifstormContrlInfos
+--ro ifstormContrlInfo* [packetType]
+--ro packetType stormCtrlType
+--ro punishStatus? stormCtrlActionType
+--ro lastPunishTime? string
ARP security is set of functions to protect the ARP protocol and networks against malicious attacks so that the network communication keeps stable and important user information is protected, which mainly includes:
module: ietf-arp-sec
+--ro arp-sec
+--ro arpInterf aces
| +--rw arpInterface* [ifName]
| +--rw ifName -> /if:interfaces/if:interface/if:name
| +--rw arpLearnDisable? boolean //arp-learning-control
| +--rw arpLearnStrict? arpStrictLearn //arp-learning-control
| +--rw fakeExpireTime? uint32 //arp-fake-expire-time?
| +--rw dstMacCheck? boolean //validate
| +--rw srcMacCheck? boolean //validate
+--rw secArpGrats
| +--rw secArpGrat* [ifName]
| +--rw ifName -> /if:interfaces/if:interface/if:name
+--rw secArpChkIpEns
| +--rw secArpChkIpEn* [ifName]
| +--rw ifName -> /if:interfaces/if:interface/if:name
+--rw secArpMacIlls
| +--rw secArpMacIll* [ifName]
| +--rw ifName -> /if:interfaces/if:interface/if:name
+--rw secArpReqNoBlks
| +--rw secArpReqNoBlk* [ifName]
| +--rw ifName -> /if:interfaces/if:interface/if:name
+--ro secDisArpChks
| +--ro secDisArpChk* [secSlotId secChkType]
| +--ro secSlotId -> /devm:devm/lpuBoards/lpuBoard/position
| +--ro secChkType cpudefendArpAttackType
| +--ro secTotalPkts? uint64
| +--ro secPassedPkts? uint64
| +--ro secDropedPkts? uint64
+--ro arpIfLimits //arp-table-limit
| +--rw arpIfLimit* [ifName vlanId]
| +--rw ifName -> /if:interfaces/if:interface/if:name
| +--rw vlanId uint16
| +--rw limitNum uint32
| +--ro learnedNum? uint32
+--ro arpSpeedLimits // arp-speed-limit
| +--rw arpSpeedLimit* [slotId suppressType ipType]
| +--rw slotId string
| +--rw suppressType enumeration
| +--rw ipType enumeration
| +--rw suppressValue uint32
+--ro arpGlobalSpeedLimits // arp-speed-limit
+--rw arpGSpeedLimit* [gSuppressType gIpType]
+--rw gSuppressType arpSuppType
+--rw gIpType arpSuppIpType
+--rw gPortType? enumeration
+--rw gSuppressValue uint32
Unicast Reverse Path Forwarding (URPF) is a technology used to defend against network attacks based on source address spoofing. Generally, upon receiving a packet, a router first obtains the destination IP address of the packet and then searches the forwarding table for a route to the destination address. If the router finds such a route, it forwards the packet; otherwise, it discards the packet. A URPF-enabled router, however, obtains the source IP address of a received packet and searches for a route to the source address. If the router fails to find the route, it considers that the source address is a forged one and discards the packet. In this manner, URPF can effectively protect against malicious attacks that are launched by changing the source addresses of packets.
URPF can be performed in strict or loose mode. The strict mode checks both the existence of source address in the route table and the interface consistency, while loose mode only checks if the source address is in the route table. In some case, the router may have only one default route to the router of the ISP. Therefore, matching the default route entry needs to be supported.
URPF can be performed over interface, defined flow and traffic sent to local CPU.
module: ietf-urpf-sec
+--ro urpf-sec
+--rw interface-urpf* [ifname]
| +--rw ifname if:interface-ref
| +--rw mode? enumeration
| +--rw allow-default? boolean
augment "/policy:policies/policy:policy-entry" +
| "/policy:classifier-entry" +
| "/policy:classifier-action-entry-cfg":
+--rw (action-cfg-params)?
| +--:(urpf)
| +--rw urpf-cfg
| +--rw check-type? urpf-check-type
| +--rw allow-default? Boolean
+--rw local-URPF
+--rw cpu-defend-policy* [name]
+--rw name string
+--description? string
+-- urpf-mode enumeration
+--allow-default boolean
+--slot-id unit16
Identity urpf {
base policy:action-type;
description
" urpf action type";
}
grouping urpf {
container urpf-cfg {
leaf check-type {
type urpf-check-type;
description
"urpf checking";
}
leaf allow-default{
type qos-switch-flag;
description " allowDefault flag";
}
description
"urpf container";
}
description
"dscp marking grouping";
}
augment "/policy:policies" +
"/policy:policy-entry" +
"/policy:classifier-entry" +
"/policy:classifier-action-entry-cfg" +
"/diffserv:action-cfg-params" {
case urpf {
uses sec-ac:urpf;
description
"urpf action";
}
}
DHCP, which is widely used on networks, dynamically assigns IP addresses to clients and manages configuration information in a centralized manner. During DHCP packet forwarding, some attacks may occur, such as bogus DHCP server attacks, DHCP exhaustion attacks, denial of service (DoS) attacks, and DHCP flooding attacks.
DHCP snooping is a DHCP security feature that functions in a similar way to a firewall between DHCP clients and servers. A DHCP-snooping-capable device intercepts DHCP packets and uses information carried in the packets to create a DHCP snooping binding table. This table records hosts' MAC addresses, IP addresses, IP address lease time, VLAN, and interface information. The device uses this table to check the validity of received DHCP packets. If a DHCP packet does not match any entry in this table, the device discards the packet.
Besides the binding table, DHCP snooping has other security features such as trusted interface, max dhcp user limit and whitelist to defend against the bogus DHCP server, DHCP flooding and other fine-grained DHCP attacks.
module: ietf-dhcp-sec
+--rw dhcp
+--rw snooping
+--rw dhcpSnpGlobal
| +--rw dhcpSnpEnable? boolean
| +--rw serverDetectEnable? boolean
| +--rw dhcpSnpUserBindAutoSaveEnable? boolean
| +--rw dhcpSnpUserBindFileName? string
| +--rw globalCheckRateEnable? boolean
| +--rw dhcpSnpGlobalRate? uint16
| +--rw checkRateAlarmEnable? boolean
| +--rw rateThreshold? uint16
| +--rw alarmThreshold? uint16
| +--ro rateLimitPacketCount? uint32
| +--rw dhcpSnpUserOfflineRemoveMac? boolean
| +--rw dhcpSnpArpDetectEnable? boolean
| +--rw dhcpSnpGlobalMaxUser? uint16
| +--rw dhcpSnpUserTransferEnable? boolean
+--rw dhcpSnpVlans
| +--rw dhcpSnpVlan* [vlanId]
| +--rw vlanId uint16
| +--rw dhcpSnpEnable boolean
| +--rw checkRateEnable boolean
| +--rw dhcpSnpVlanRate uint32
| +--rw dhcpSnpVlanTrustEnable boolean
| +--rw checkArpEnable boolean
| +--rw alarmArpEnable boolean
| +--rw alarmArpThreshold uint16
| +--rw checkIpEnable boolean
| +--rw alarmIpEnable boolean
| +--rw alarmIpThreshold uint16
| +--rw alarmReplyEnable boolean
| +--rw alarmReplyThreshold uint16
| +--rw checkMacEnable boolean
| +--rw alarmMacEnable boolean
| +--rw alarmMacThreshold uint16
| +--rw checkUserBindEnable boolean
| +--rw alarmUserBindEnable boolean
| +--rw alarmUserBindThreshold uint16
| +--rw dhcpSnpVlanMaxUserNum uint16
| +--rw alarmUserLimitEnable boolean
| +--rw alarmUserLimitThreshold uint16
| +--rw dhcpSnpVlanStatistics
| +--ro dropArpPktCnt? uint32
| +--ro dropIpPktCnt? uint32
| +--ro dropDhcpReqCntByBindTbl? uint32
| +--ro dropDhcpReqCntByMacCheck? uint32
| +--ro dropDhcpReplyCnt? uint32
+--rw vlanTrustInterfaces
| +--rw vlanTrustInterface* [vlanId ifName]
| +--rw vlanId uint16
| +--rw ifName pub-type:ifName
+--rw dhcpSnpInterfaces
| +--rw dhcpSnpInterface* [ifName]
| +--rw ifName pub-type:ifName
| +--rw dhcpSnpEnable boolean
| +--rw dhcpSnpIfDisable boolean
| +--rw dhcpSnpIfTrustEnable boolean
| +--rw dhcpSnpIfRate uint16
| +--rw checkRateEnable boolean
| +--rw alarmRateEnable boolean
| +--rw alarmRateThreshold uint16
| +--rw checkArpEnable boolean
| +--rw alarmArpEnable boolean
| +--rw alarmArpThreshold uint16
| +--rw checkIpEnable boolean
| +--rw alarmIpEnable boolean
| +--rw alarmIpThreshold uint16
| +--rw alarmReplyEnable boolean
| +--rw alarmReplyThreshold uint16
| +--rw checkMacEnable boolean
| +--rw alarmMacEnable boolean
| +--rw alarmMacThreshold uint16
| +--rw checkUserBindEnable boolean
| +--rw alarmUserBindEnable boolean
| +--rw alarmUserBindThreshold uint16
| +--rw dhcpSnpIntfMaxUserNum uint32
| +--rw alarmUserLimitEnable boolean
| +--rw alarmUserLimitThreshold uint16
| +--rw dhcpSnpInterfStickyMacEnable boolean
| +--rw dhcpSnpIfStatistics
| +--ro dropArpPktCnt? uint32
| +--ro dropIpPktCnt? uint32
| +--ro pktCntDropByUserBind? uint32
| +--ro pktCntDropByMac? uint32
| +--ro pktCntDropByUntrustReply? uint32
| +--ro pktCntDropByRate? uint32
+--rw dhcpSnpDynBindTbls
| +--ro dhcpSnpDynBindTbl* [ipAddress outerVlan innerVlan vsiName vpnName bridgeDomain]
| +--ro ipAddress pub-type:ipv4Address
| +--ro outerVlan uint16
| +--ro innerVlan uint16
| +--ro vsiName string
| +--ro vpnName string
| +--ro bridgeDomain uint32
| +--ro macAddress? pub-type:macAddress
| +--ro ifName? pub-type:ifName
| +--ro lease? yang:date-and-time
+--rw dhcpSnpVlanIfs
| +--rw dhcpSnpVlanIf* [vlanId ifName]
| +--rw vlanId uint16
| +--rw ifName pub-type:ifName
| +--rw dhcpSnpEnable boolean
| +--rw trustFlag boolean
| +--rw checkArpEnable boolean
| +--rw alarmArpEnable boolean
| +--rw alarmArpThreshold uint32
| +--rw checkIpEnable boolean
| +--rw alarmIpEnable boolean
| +--rw alarmIpThreshold uint32
| +--rw alarmReplyEnable boolean
| +--rw alarmReplyThreshold uint32
| +--rw checkChaddrEnable boolean
| +--rw alarmChaddrEnable boolean
| +--rw alarmChaddrThreshold uint32
| +--rw checkReqEnable boolean
| +--rw alarmReqEnable boolean
| +--rw alarmReqThreshold uint32
| +--rw dhcpSnpVlanIfMaxUserNum uint32
| +--rw alarmUserLimitEnable boolean
| +--rw alarmUserLimitThreshold uint32
| +--rw dhcpSnpVlanIfStatistics
| +--ro dropArpPktCnt? uint32
| +--ro dropIpPktCnt? uint32
| +--ro dropDhcpReqCntByBindTbl? uint32
| +--ro dropDhcpReqCntByMacCheck? uint32
| +--ro dropDhcpReplyCnt? uint32
+--rw ifStaticBindTbls
| +--rw ifStaticBindTbl* [ifName ipAddress vlanId ceVlanId]
| +--rw ifName pub-type:ifName
| +--rw ipAddress pub-type:ipAddress
| +--rw vlanId uint16
| +--rw ceVlanId uint16
| +--rw macAddress? pub-type:macAddress
+--rw vlanStaticBindTbls
| +--rw vlanStaticBindTbl* [vlanId ipAddress ceVlanId]
| +--rw vlanId uint16
| +--rw ipAddress pub-type:ipAddress
| +--rw ceVlanId uint16
| +--rw macAddress? pub-type:macAddress
| +--rw ifName? pub-type:ifName
+--rw dhcpSnpBds
| +--rw dhcpSnpBd* [bdId]
| +--rw bdId uint32
| +--rw dhcpSnpEnable? boolean
| +--rw dhcpSnpTrust? boolean
| +--rw checkArpEnable? boolean
| +--rw alarmArpEnable? boolean
| +--rw alarmArpThreshold? uint32
| +--rw checkIpEnable? boolean
| +--rw alarmIpEnable? boolean
| +--rw alarmIpThreshold? uint32
| +--rw alarmReplyEnable? boolean
| +--rw alarmReplyThreshold? uint32
| +--rw checkMacEnable? boolean
| +--rw alarmMacEnable? boolean
| +--rw alarmMacThreshold? uint32
| +--rw checkRequestEnable? boolean
| +--rw alarmRequestEnable? boolean
| +--rw alarmRequestThreshold? uint32
| +--rw maxUserNum? uint32
| +--rw alarmUserLimitEnable? boolean
| +--rw alarmUserLimitThreshold? uint32
| +--rw statistics
| +--ro dropArpPktCnt? uint32
| +--ro dropIpPktCnt? uint32
| +--ro dropDhcpReqCntByBindTbl? uint32
| +--ro dropDhcpReqCntByMacCheck? uint32
| +--ro dropDhcpReplyCnt? uint32
+--rw BdStaticBindTbls
| +--rw globalBdStaticBindTbl* [bdId ipAddress peVlan ceVlan]
| +--rw bdId uint32
| +--rw ipAddress pub-type:ipv4Address
| +--rw macAddress? pub-type:macAddress
| +--rw peVlan uint16
| +--rw ceVlan uint16
+--rw dhcpSnpWhiteLists
+--rw dhcpSnpWhiteList* [whtLstName]
+--rw whtLstName string
+--rw applyFlag boolean
+--rw dhcpSnpWhiteRules
+--rw dhcpSnpWhiteRule* [ruleId]
+--rw ruleId uint16
+--rw srcIP? inet:ipv4-address-no-zone
+--rw srcMask? inet:ipv4-address-no-zone
+--rw dstIP? inet:ipv4-address-no-zone
+--rw dstMask? inet:ipv4-address-no-zone
+--rw srcPort? dhcpSnpPort
+--rw dstPort? dhcpSnpPort
For the network device, there are maybe a large number of packets to be sent to its CPU, or malicious packets attempt to attack the device CPU. If the CPU receives excessive packets, it will be overloaded and support the normal services with very poor performance; In extreme cases, the system fails.
More specifically, services are negatively affected when the CPU is attacked because of the following reasons:
Accordingly, the following countermeasures can be taken by the network device for CPU protection:
In this manner, the number of packets sent to the CPU is under control, and the bandwidth is ensured preferentially for services with higher priorities. In addition, CPU overload is prevented and an alarm is generated when an attack occurs.
module: ietf-cpuDefend
+--rw cpuDefend
+--rw cpuDefendPolicys
| +--rw cpuDefendPolicy* [policyID]
| +--rw policyID uint32
| +--rw description? string
| +--rw whiteListACLNumber? uint32
| +--rw blackListACLNumber? uint32
| +--rw userDefinedFlows
| | +--rw userDefinedFlow* [flowID]
| | +--rw flowID uint32
| | +--rw aclNumber uint32
| +--rw cpuDefendRules
| +--rw cpuDefendRule* [ruleType pktIndex userDefinedFlowID protocolName tcpIpName]
| +--rw ruleType cpuDefendRuleType // [total-packet | whitelist | blacklist | use-defined-flow | protocolName | TcpIpType]
| +--rw pktIndex? uint16
| +--rw userDefinedFlowID? uint32
| +--rw protocolName? protocolType // [ftpServer | sshServer | snmp | ... | NA]
| +--rw tcpIpName? tcpIPType // [TCPSYN | FRAGMENT | NA]
| +--rw CARAttr
| | +--rw cir? uint32
| | +--rw cbs? uint32
| | +--rw pir? uint32
| | +--rw pbs? uint32
| | +--rw minPktLen? uint32
| | +--rw pktRate? uint32
| | +--rw weight? uint16
| +--rw priority? priorityEnum //{ high | middle | low | be | af1 | af2 | af3 | af4 | ef | cs6 }
| +--rw alarmDropRate
| +--rw enable boolean
| +--rw threshold? uint32
| +--rw interval? uint16
| +--rw speedThreshold? uint32
+--rw cpuDefendPolicyCfgs
| +--rw cpuDefendPolicyCfg* [slotIdStr]
| +--rw slotIdStr -> /devm:devm/lpuBoards/lpuBoard/position
| +--rw policyID -> /cpudefend/cpuDefendPolicys/cpuDefendPolicy/policyID
+--ro displayCARsConfs
| +--ro displayCARsConf* [slotId pktIndex]
| +--ro slotId string
| +--ro pktIndex uint16
| +--ro cir? uint32
| +--ro cbs? uint32
| +--ro minPkt? uint32
| +--ro priority? priorityEnum
| +--ro desc? protocolType
+--ro protocolStats
| +--ro protocolStat* [slotId]
| +--ro slotId string
| +--ro protocolEnable protocolType //{ftpServer | sshServer | snmp | ...}
| +--ro defaultAct protocolEnableDefAction // {Drop | Min_to_cpu}
| +--ro defaultCir uint32
| +--ro defaultCbs uint32
+--ro secnoncarstats
| +--ro secnoncarstat* [secSlotId secPolicyType secPolicyTypeID]
| +--ro secSlotId string
| +--ro secPolicyType cpudefendNoCarPolicyType
| +--ro secPolicyTypeID cpudefendSecStatTypeID
| +--ro secSubTotalPkts? uint64
| +--ro secSubPassPkts? uint64
| +--ro secSubDropPkts? uint64
+--ro seccarstats
| +--ro seccarstat* [secSlotId secPolicyType secPolicyTypeID]
| +--ro secSlotId string
| +--ro secPolicyType cpudefendPolicyType
| +--ro secPolicyTypeID uint32
| +--ro secAppEnable? boolean
| +--ro secAppDefAct? cpudefendAppDefAction
| +--ro secProtoEnable? boolean
| +--ro secPassedPkts? uint64
| +--ro secDropedPkts? uint64
| +--ro secCfgCir? uint32
| +--ro secCfgCbs? uint32
| +--ro secActualCir? uint32
| +--ro secActualCbs? uint32
| +--ro secPriority? cpudefendPriority
| +--ro secMinPktLen? uint32
| +--ro secAclDenyPkts? uint64
| +--ro secHistPps? uint64
| +--ro secHistPpsTime? yang:date-and-time
| +--ro secLastPps? uint64
| +--ro secLastDrpBTime? yang:date-and-time
| +--ro secLastDrpETime? yang:date-and-time
| +--ro secTtlDropPkts? uint64
+--ro totalPktStats
| +--ro totalPktStat* [slotId]
| +--ro slotId string
| +--ro totalPkt? uint64
| +--ro passPkt? uint64
| +--ro dropPkt? uint64
+--rw hostcarNodes
| +--rw hostcarNode* [slotID hostCarType]
| +--rw slotID -> /devm:devm/lpuBoards/lpuBoard/position
| +--rw hostCarType hostCarTypeEnum // {hostcar | http-hostcar | vlan-host-car}
| +--rw ifEnable? socIfEnable
| +--rw cir? uint32
| +--rw pir? uint32
| +--rw cbs? uint32
| +--rw pbs? uint32
| +--rw dropThreshold? uint32
| +--rw interval? uint32
+--ro hostCarStats
| +--ro hostCarStat* [slotID hostCarType statType hostCarID httpHostCarID vlanHostCarID]
| +--ro slotID -> /devm:devm/lpuBoards/lpuBoard/position
| +--ro hostCarType hostCarTypeEnum
| +--ro statType statTypeEnum // {carID | all | auto-adjust | dropped | non-dropped | active}
| +--ro hostCarID uint32
| +--ro httpHostCarID uint32
| +--ro vlanHostCarID uint32
| +--ro passedBytes? uint64
| +--ro droppedBytes? uint64
+--ro hostCarCfgs
+--ro hostCarCfg* [slotID]
+--ro slotID string
+--ro hostCarType? hostCarTypeEnum
+--ro defaultCir? uint32
+--ro defaultPir? uint32
+--ro defaultCbs? uint32
+--ro defaultPbs? uint32
+--ro actualCir? uint32
+--ro actualPir? uint32
+--ro actualCbs? uint32
+--ro actualPbs? uint32
+--ro droprateEn? ifEnable
+--ro logInterval? uint32
+--ro logThreshold? uint32
Defense against TCP/IP attacks is applied to the router on the edge of the network or other routers that are easily to be attacked by illegal TCP/IP packets. Defense against TCP/IP attacks can protect the CPU of the router against malformed packets, fragmented packets, TCP SYN packets, and UDP packets, ensuring that normal services can be processed.
module: ietf-tcp-ip-attack-defence
+--rw secAntiAttackEnable
| +--rw antiEnable? antiAttackEnableCfgType
| +--rw abnormalEnable? antiAttackEnableCfgType
| +--rw udpFloodEnable? antiAttackEnableCfgType
| +--rw tcpSynEnable? antiAttackEnableCfgType
| +--rw icmpFloodEnable? antiAttackEnableCfgType
| +--rw fragmentEnable? antiAttackEnableCfgType
+--rw secAntiAttackCarCfg
| +--rw cirFlag? uint32
| +--rw cirIcmp? uint32
| +--rw cirTcp? uint32
+--rw secAntiAttackStats
| +--ro secAntiAttackStat* [attackType]
| +--ro attackType antiAttackType
| +--ro totalCount? uint64
| +--ro dropCount? uint64
| +--ro passCount? uint64
module ietf-mac-limit {
namespace "urn:ietf:params:xml:ns:yang:ietf-mac-limit";
prefix maclimit;
/*
import huawei-pub-type {
prefix pub-type;
}
*/
import ietf-yang-types {
prefix yang;
}
/*
import huawei-extension {
prefix ext;
}
include huawei-mac-action;
include huawei-mac-type;
*/
organization
"Huawei Technologies.";
contact
"Liang Xia: Frank.xialiang@huawei.com";
"Guangying Zheng: Zhengguangying@huawei.com";
description
"MAC address limit.";
revision 2017-09-01 {
description
"Init revision";
reference "xxx.";
}
container mac {
description
"MAC address forwarding. ";
container macLimitRules {
description
"Global MAC address learning limit rule.";
list macLimitRule {
key "ruleName";
description
"Global MAC address learning limit.";
leaf ruleName {
type string {
length "1..31";
}
description
"Global MAC address learning limit rule name.";
}
leaf maximum {
type uint32 {
range "0..131072";
}
mandatory true;
description
"Maximum number of MAC addresses that can be learned.";
}
leaf rate {
type uint16 {
range "0..1000";
}
default "0";
description
"Interval at which MAC addresses are learned.";
}
leaf action {
type macLimitForward;
default "discard";
description
"Discard or forward after the number of learned MAC addresses reaches the maximum number.";
}
leaf alarm {
type macEnableStatus;
default "enable";
description
"Whether an alarm is generated after the number of learned MAC addresses reaches the maximum number.";
}
}
}
container vlanMacLimits {
description
"VLAN MAC address limit list.";
list vlanMacLimit {
key "vlanId";
description
"VLAN MAC address limit.";
leaf vlanId {
type macVlanId;
description
"VLAN ID.";
}
leaf maximum {
type uint32 {
range "0..130048";
}
mandatory true;
description
"Maximum number of MAC addresses that can be learned in a VLAN.";
}
leaf rate {
type uint16 {
range "0..1000";
}
default "0";
description
"Interval at which MAC addresses are learned in a VLAN.";
}
leaf action {
type macLimitForward;
default "discard";
description
"Discard or forward after the number of learned MAC addresses reaches the maximum number in a VLAN.";
}
leaf alarm {
type macEnableStatus;
default "enable";
description
"Whether an alarm is generated after the number of learned MAC addresses reaches the maximum number in a VLAN.";
}
}
}
container vsiMacLimits {
description
"VSI MAC address limit list.";
list vsiMacLimit {
key "vsiName";
description
"VSI MAC address limit.";
leaf vsiName {
type string {
length "1..31";
}
description
"VSI name.";
}
leaf maximum {
type uint32 {
range "0..524288";
}
mandatory true;
description
"Maximum number of MAC addresses that can be learned in a VSI.";
}
leaf rate {
type uint16 {
range "0..1000";
}
default "0";
description
"Interval at which MAC addresses are learned in a VSI.";
}
leaf action {
type macLimitForward;
default "discard";
description
"Discard or forward after the number of learned MAC addresses reaches the maximum number in a VSI.";
}
leaf alarm {
type macEnableStatus;
default "disable";
description
"Whether an alarm is generated after the number of learned MAC addresses reaches the maximum number in a VSI.";
}
leaf upThreshold {
type uint8 {
range "80..100";
}
mandatory true;
description
"Upper limit for the number of MAC addresses.";
}
leaf downThreshold {
type uint8 {
range "60..100";
}
mandatory true;
description
"Upper limit for the number of MAC addresses.";
}
}
}
container bdMacLimits {
description
"BD MAC address limit list.";
list bdMacLimit {
key "bdId";
description
"BD MAC address limit.";
leaf bdId {
type uint32 {
range "1..16777215";
}
description
"Specifies the ID of a bridge domain.";
}
leaf maximum {
type uint32 {
range "0..130048";
}
mandatory true;
description
"Maximum number of MAC addresses that can be learned in a BD.";
}
leaf rate {
type uint16 {
range "0..1000";
}
default "0";
description
"Interval at which MAC addresses are learned in a BD.";
}
leaf action {
type macLimitForward;
default "discard";
description
"Forward or discard the packet.";
}
leaf alarm {
type macEnableStatus;
default "enable";
description
"Whether an alarm is generated after the number of learned MAC addresses reaches the maximum number.";
}
}
}
container pwMacLimits {
description
"PW MAC address limit list.";
list pwMacLimit {
key "vsiName pwName";
description
"PW MAC address limit.";
leaf vsiName {
type string {
length "1..31";
}
description
"VSI name.";
}
leaf pwName {
type string {
length "1..15";
}
description
"PW name.";
}
leaf maximum {
type uint32 {
range "0..130048";
}
mandatory true;
description
"Maximum number of MAC addresses that can be learned in a PW.";
}
leaf rate {
type uint16 {
range "0..1000";
}
default "0";
description
"Interval at which MAC addresses are learned in a PW.";
}
leaf action {
type macLimitForward;
default "discard";
description
"Discard or forward after the number of learned MAC addresses reaches the maximum number in a PW.";
}
leaf alarm {
type macEnableStatus;
default "enable";
description
"Whether an alarm is generated after the number of learned MAC addresses reaches the maximum number in a PW.";
}
}
}
container ifMacLimits {
description
"Interface MAC address limit list.";
list ifMacLimit {
key "ifName limitType";
description
"Interface MAC address limit.";
leaf ifName {
type pub-type:ifName;
description
"Interface name.";
}
leaf limitType {
type limitType;
description
"Interface MAC limit type.";
}
leaf ruleName {
type leafref {
path "/mac/macLimitRules/macLimitRule/ruleName";
}
description
"Rule name.";
}
leaf maximum {
type uint32 {
range "0..131072";
}
mandatory true;
description
"Maximum number of MAC addresses that can be learned on an interface.";
}
leaf rate {
type uint16 {
range "0..1000";
}
default "0";
description
"Interval (ms) at which MAC addresses are learned on an interface.";
}
leaf action {
type macLimitForward;
default "discard";
description
"Discard or forward after the number of learned MAC addresses reaches the maximum number on an interface";
}
leaf alarm {
type macEnableStatus;
default "enable";
description
"Whether an alarm is generated after the number of learned MAC addresses reaches the maximum number on an interface.";
}
}
}
container ifVlanMacLimits {
description
"Interface + VLAN MAC address limit list.";
list ifVlanMacLimit {
key "ifName vlanBegin limitType";
config false;
description
"Interface + VLAN MAC address limit.";
leaf ifName {
type pub-type:ifName;
description
"Name of an interface. ";
}
leaf vlanBegin {
type macVlanId;
description
"Start VLAN ID.";
}
leaf vlanEnd {
type macVlanId;
description
"End VLAN ID.";
}
leaf limitType {
type limitType;
description
"Interface MAC limit type.";
}
leaf ruleName {
type leafref {
path "/mac/macLimitRules/macLimitRule/ruleName";
}
description
"Rule name.";
}
leaf maximum {
type uint32 {
range "0..131072";
}
mandatory true;
description
"Maximum number of MAC addresses that can be learned on an interface.";
}
leaf rate {
type uint16 {
range "0..1000";
}
mandatory true;
description
"Interval (ms) at which MAC addresses are learned on an interface.";
}
leaf action {
type macLimitForward;
default "discard";
description
"Discard or forward the packet.";
}
leaf alarm {
type macEnableStatus;
default "enable";
description
"Whether an alarm is generated after the number of learned MAC addresses reaches the maximum number.";
}
}
}
container subifMacLimits {
description
"Sub-interface MAC address limit list.";
list subifMacLimit {
key "ifName limitType";
description
"Sub-interface MAC address limit.";
leaf ifName {
type pub-type:ifName;
description
"Name of a sub-interface. ";
}
leaf limitType {
type limitType;
description
"Sub-interface MAC limit type.";
}
leaf vsiName {
type string {
length "1..36";
}
config false;
mandatory true;
description
"VSI name , EVPN name or bridge domain ID.";
}
leaf ruleName {
type string {
length "1..31";
}
mandatory true;
description
"Rule name.";
}
leaf maximum {
type uint32 {
range "0..131072";
}
mandatory true;
description
"Maximum number of MAC addresses that can be learned on a sub-interface.";
}
leaf rate {
type uint16 {
range "0..1000";
}
default "0";
description
"Interval (ms) at which MAC addresses are learned on a sub-interface.";
}
leaf action {
type macLimitForward;
default "discard";
description
"Discard or forward after the number of learned MAC addresses reaches the maximum number on a sub-interface.";
}
leaf alarm {
type macEnableStatus;
default "enable";
description
"Whether an alarm is generated after the number of learned MAC addresses reaches the maximum number on a sub-interface.";
}
}
}
container vsiStormSupps {
description
"VSI Suppression List.";
list vsiStormSupp {
key "vsiName suppressType";
description
"VSI Suppression.";
leaf vsiName {
type string {
length "1..31";
}
description
"VSI name.";
}
leaf suppressType {
type suppressType;
description
"Traffic suppression type.";
}
leaf cir {
type uint64 {
range "0..4294967295";
}
default "0";
description
"CIR value.";
}
leaf cbs {
type uint64 {
range "0..4294967295";
}
description
"CBS value.";
}
}
}
container vlanStormSupps {
description
"VLAN Suppression List.";
list vlanStormSupp {
key "vlanId suppressType";
description
"VLAN Suppression.";
leaf vlanId {
type macVlanId;
description
"VLAN ID.";
}
leaf suppressType {
type suppressType;
description
"Traffic suppression type.";
}
leaf cir {
type uint64 {
range "64..4294967295";
}
default "64";
description
"CIR value.";
}
leaf cbs {
type uint64 {
range "10000..4294967295";
}
description
"CBS value.";
}
}
}
container subIfSuppresss {
description
"Sub-interface traffic suppression list.";
list subIfSuppress {
key "ifName suppressType direction";
description
"Sub-Interface traffic suppression.";
leaf ifName {
type pub-type:ifName;
description
"Sub-interface name.";
}
leaf suppressType {
type suppressType;
description
"Suppression type.";
}
leaf direction {
type directionType;
description
"Suppression direction.";
}
leaf cir {
type uint64 {
range "0..4294967295";
}
default "0";
description
"CIR value.";
}
leaf cbs {
type uint64 {
range "0..4294967295";
}
description
"CBS value.";
}
}
}
container pwSuppresss {
description
"PW traffic suppress list.";
list pwSuppress {
key "vsiName pwName suppressType";
description
"PW traffic suppression.";
leaf vsiName {
type string {
length "1..31";
}
description
"VSI name.";
}
leaf pwName {
type string {
length "1..15";
}
description
"PW name.";
}
leaf suppressType {
type suppressType;
description
"Traffic suppression type.";
}
leaf cir {
type uint64 {
range "100..4294967295";
}
default "100";
description
"CIR value.";
}
leaf cbs {
type uint64 {
range "100..4294967295";
}
description
"CBS value.";
}
}
}
container pwSuppressPtns {
description
"PW traffic suppress list.";
list pwSuppressPtn {
key "vsiName peerIp pwId pwEncap";
description
"PW traffic suppression.";
leaf vsiName {
type string {
length "1..31";
}
description
"VSI name.";
}
leaf peerIp {
type string {
length "0..255";
pattern "((([1-9]?[0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\\.){3}([1-9]?[0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5]))";
}
description
"Peer IP address.";
}
leaf pwId {
type uint32 {
range "1..4294967295";
}
description
"PW ID.";
}
leaf pwEncap {
type macPwEncapType;
description
"PW encapsulation type.";
}
leaf isEnable {
type boolean;
default "true";
description
"Enable status.";
}
leaf suppressType {
type suppressStyle;
default "absoluteValue";
description
"Traffic suppression type.";
}
leaf broadcast {
type uint32 {
range "0..200000000";
}
default "1000";
description
"Broadcast suppression (kbit/s)";
}
leaf unicast {
type uint32 {
range "0..200000000";
}
default "1000";
description
"Unknown unicast suppression (kbit/s).";
}
leaf multicast {
type uint32 {
range "0..200000000";
}
default "1000";
description
"Multicast suppression (kbit/s).";
}
}
}
container vsiInSuppressions {
description
"VSI inbound traffic suppression list.";
list vsiInSuppression {
key "vsiName";
description
"VSI inbound traffic suppression.";
leaf vsiName {
type string {
length "1..31";
}
description
"VSI name.";
}
leaf inboundSupp {
type macEnableStatus;
default "enable";
description
"Inbound suppression.";
}
}
}
container vsiOutSuppressions {
description
"VSI outbound traffic suppression list.";
list vsiOutSuppression {
key "vsiName";
description
"VSI outbound traffic suppression.";
leaf vsiName {
type string {
length "1..31";
}
description
"VSI name.";
}
leaf outboundSupp {
type macEnableStatus;
default "enable";
description
"Outbound suppression.";
}
}
}
container vsiSuppresss {
description
"VSI traffic suppression list.";
list vsiSuppress {
key "subIfName";
description
"VSI traffic suppression.";
leaf vsiName {
type string {
length "1..31";
}
mandatory true;
description
"VSI name.";
}
leaf subIfName {
type pub-type:ifName;
description
"Sub-interface name.";
}
leaf isEnable {
type boolean;
default "true";
description
"Enable status.";
}
leaf suppressType {
type suppressStyle;
default "percent";
description
"Traffic suppression type.";
}
leaf broadcast {
type uint32 {
range "0..200000000";
}
default "64";
description
"Broadcast suppression (kbit/s)";
}
leaf broadcastPercent {
type uint32 {
range "0..100";
}
default "1";
description
"Broadcast suppression.";
}
leaf unicast {
type uint32 {
range "0..200000000";
}
default "64";
description
"Unknown unicast suppression (kbit/s).";
}
leaf unicastPercent {
type uint32 {
range "0..100";
}
default "1";
description
"Unknown unicast suppression.";
}
leaf multicast {
type uint32 {
range "0..200000000";
}
default "64";
description
"Multicast suppression (kbit/s).";
}
leaf multicastPercent {
type uint32 {
range "0..100";
}
default "1";
description
"Multicast suppression.";
}
}
}
container vsiTotalNumbers {
description
"List of MAC address total numbers in a VSI.";
list vsiTotalNumber {
key "vsiName slotId macType";
config false;
description
"Total number of MAC addresses in a VSI.";
leaf vsiName {
type string {
length "1..31";
}
description
"VSI name.";
}
leaf slotId {
type string {
length "1..24";
}
description
"Slot ID.";
}
leaf macType {
type macType;
description
"MAC address type.";
}
leaf number {
type uint32;
mandatory true;
description
"Number of MAC addresses.";
}
}
}
container ifStormSupps {
description
"Interface traffic suppression list.";
list ifStormSupp {
key "ifName suppressType";
description
"Interface traffic suppression.";
leaf ifName {
type pub-type:ifName;
description
"Name of an interface. ";
}
leaf suppressType {
type suppressType;
description
"Suppression type.";
}
leaf percent {
type uint64 {
range "0..99";
}
description
"Percent.";
}
leaf packets {
type uint64 {
range "0..148810000";
}
description
"Packets per second.";
}
leaf cir {
type uint64 {
range "0..100000000";
}
description
"CIR(Kbit/s).";
}
leaf cbs {
type uint64 {
range "10000..4294967295";
}
description
"CBS(Bytes).";
}
}
}
container ifStormBlocks {
description
"Interface traffic block list.";
list ifStormBlock {
key "ifName blockType direction";
description
"Interface traffic suppression.";
leaf ifName {
type pub-type:ifName;
description
"Name of an interface. ";
}
leaf blockType {
type suppressType;
description
"Block type.";
}
leaf direction {
type directionType;
description
"Direction.";
}
}
}
container ifStormContrls {
description
"Interface storm control list.";
list ifStormContrl {
key "ifName";
description
"Interface storm control.";
leaf ifName {
type pub-type:ifName;
description
"Name of an interface. ";
}
leaf action {
type stormCtrlActionType;
default "normal";
description
"Action type.";
}
leaf trapEnable {
type enableType;
default "disable";
description
"Trap state.";
}
leaf logEnable {
type enableType;
default "disable";
description
"Log state.";
}
leaf interval {
type uint64 {
range "1..180";
}
default "5";
description
"Detect interval.";
}
container ifPacketContrlAttributes {
description
"Storm control rate list.";
list ifPacketContrlAttribute {
key "packetType";
description
"Storm control rate.";
leaf packetType {
type stormCtrlType;
description
"Packet type.";
}
leaf rateType {
type stormCtrlRateType;
default "pps";
description
"Storm control rate type.";
}
leaf minRate {
type uint32 {
range "1..148810000";
}
mandatory true;
description
"Storm control min rate.";
}
leaf maxRate {
type uint64 {
range "1..148810000";
}
mandatory true;
description
"Storm control max rate.";
}
}
}
container ifstormContrlInfos {
description
"Storm control info list.";
list ifstormContrlInfo {
key "packetType";
config false;
description
"Storm control info";
leaf packetType {
type stormCtrlType;
description
"Packet type.";
}
leaf punishStatus {
type stormCtrlActionType;
description
"Storm control status.";
}
leaf lastPunishTime {
type string {
length "1..50";
}
description
"Last punish time.";
}
}
}
}
}
}
}
This document makes no request of IANA.
Note to RFC Editor: this section may be removed on publication as an RFC.
To be added.
| [RFC2119] | Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, DOI 10.17487/RFC2119, March 1997. |
| [I-D.ietf-netconf-subscribed-notifications] | Voit, E., Clemm, A., Prieto, A., Nilsen-Nygaard, E. and A. Tripathy, "Custom Subscription to Event Streams", Internet-Draft draft-ietf-netconf-subscribed-notifications-08, December 2017. |
| [I-D.ietf-netconf-yang-push] | Clemm, A., Voit, E., Prieto, A., Tripathy, A., Nilsen-Nygaard, E., Bierman, A. and B. Lengyel, "YANG Datastore Subscription", Internet-Draft draft-ietf-netconf-yang-push-12, December 2017. |
| [I-D.ietf-sacm-information-model] | Waltermire, D., Watson, K., Kahn, C., Lorenzin, L., Cokus, M., Haynes, D. and H. Birkholz, "SACM Information Model", Internet-Draft draft-ietf-sacm-information-model-10, April 2017. |