STIGQter: STIG Summary: Cisco IOS XR Router RTR Security Technical Implementation Guide Version: 2 Release: 1 Benchmark Date: 23 Oct 2020:

The Cisco router must be configured to implement message authentication for all control plane protocols.

DISA Rule

SV-217002r538972_rule

Vulnerability Number

V-217002

Group Title

SRG-NET-000230-RTR-000001

Rule Version

CISC-RT-000020

Severity

CAT II

CCI(s)

• CCI-000366 - The organization implements the security configuration settings.
• CCI-002205 - The information system uniquely identifies and authenticates source by organization, system, application, and/or individual for information transfer.

Weight

10

Fix Recommendation

Configure authentication to be enabled for every protocol that affects the routing or forwarding tables. The example configuration commands below enables OSPF, EIGRP, IS-IS, and BGP authentication.

BGP Example

RP/0/0/CPU0:R2(config)#router bgp nn
RP/0/0/CPU0:R2(config-bgp)#neighbor x.1.23.3 keychain BGP_KEY_CHAIN

EIGRP Example

RP/0/0/CPU0:R3(config)#router eigrp 1
RP/0/0/CPU0:R3(config-eigrp)#address-family ipv4
RP/0/0/CPU0:R3(config-eigrp-af)#int g0/0/0/0
RP/0/0/CPU0:R3(config-eigrp-af-if)#authentication keychain EIGRP_KEY_CHAIN
RP/0/0/CPU0:R3(config-eigrp-af-if)#end

IS-IS Example

RP/0/0/CPU0:R2(config)#router isis 1
RP/0/0/CPU0:R2(config-isis)#lsp-password keychain ISIS_KEY_CHAIN
RP/0/0/CPU0:R2(config-isis)#int GigabitEthernet0/0/0/2
RP/0/0/CPU0:R2(config-isis-if)#hello-password keychain ISIS_KEY_CHAIN
RP/0/0/CPU0:R2(config-isis-if)#end

OSPF Example

RP/0/0/CPU0:R3(config)#router ospf 1
RP/0/0/CPU0:R3(config-ospf)#area 0
RP/0/0/CPU0:R3(config-ospf-ar)#authentication message-digest keychain OSPF_KEY_CHAIN
RP/0/0/CPU0:R3(config-ospf-ar)#end

RIP Example

RP/0/0/CPU0:R2(config)#router rip
RP/0/0/CPU0:R2(config-rip)#int g0/0/0/2
RP/0/0/CPU0:R2(config-rip-if)#authentication keychain XXX_KEY_CHAIN mode md5
RP/0/0/CPU0:R2(config-rip-if)#end

Check Contents

Review the router configuration. Verify that the neighbor router authentication is enabled for all routing protocols. The configuration examples below depicts OSPF, EIGRP, IS-IS and BGP authentication.

BGP Example

router bgp nn
address-family ipv4 unicast
!
neighbor x.1.23.2
remote-as nn
keychain BGP_KEY_CHAIN
address-family ipv4 unicaast

EIGRP Example

router eigrp 1
address-family ipv4
interface GigabitEthernet0/0/0/2
authentication keychain EIGRP_KEY_CHAIN

IS-IS Example

router isis 1
net 49.0001.0001.0001.0002.00
lsp-password keychain ISIS_KEY_CHAIN
interface GigabitEthernet0/0/0/2
hello-password keychain ISIS_KEY_CHAIN

OSPF Example

router ospf 1
area 0
authentication message-digest keychain OSPF_KEY_CHAIN

RIP Example

router rip
interface GigabitEthernet0/0/0/2
authentication keychain RIP_KEY_CHAIN mode md5

If authentication is not enabled on all routing protocols, this is a finding.

Vulnerability Number

V-217002

Documentable

False

Rule Version

CISC-RT-000020

Severity Override Guidance

Review the router configuration. Verify that the neighbor router authentication is enabled for all routing protocols. The configuration examples below depicts OSPF, EIGRP, IS-IS and BGP authentication.

BGP Example

router bgp nn
address-family ipv4 unicast
!
neighbor x.1.23.2
remote-as nn
keychain BGP_KEY_CHAIN
address-family ipv4 unicaast

EIGRP Example

router eigrp 1
address-family ipv4
interface GigabitEthernet0/0/0/2
authentication keychain EIGRP_KEY_CHAIN

IS-IS Example

router isis 1
net 49.0001.0001.0001.0002.00
lsp-password keychain ISIS_KEY_CHAIN
interface GigabitEthernet0/0/0/2
hello-password keychain ISIS_KEY_CHAIN

OSPF Example

router ospf 1
area 0
authentication message-digest keychain OSPF_KEY_CHAIN

RIP Example

router rip
interface GigabitEthernet0/0/0/2
authentication keychain RIP_KEY_CHAIN mode md5

If authentication is not enabled on all routing protocols, this is a finding.

Check Content Reference

M

Target Key

4029

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