Ensure 'OSPF authentication' is enabled

ÉlevéeNiveau 2Automatiséecisco-asa

Description

Enables the authentication of OSPF neighbor before routing information is received from the neighbor. Enabling the routing protocol authentication prevents against attackers who can send wrong routing information in order to redirect traffic to their network or send malformed packets in order to saturate and to exhaust the control plane. Not applicable (passes) when no 'router ospf' is configured; otherwise fails if no interface has OSPF MD5 authentication. Audited against the output of 'show running-config' (run 'terminal pager 0' first; 'more system:running-config' also works and shows unmasked secrets).

Méthode de vérification

Méthode d'audit: Motif de configuration

Motif: (?m)\A(?:[ \t]*(?:$|[^o \t\n]|o(?:$|[^s\n]|s(?:$|[^p\n]|p(?:$|[^f\n]|f(?:$|[^ \n]| (?:$|[^am\n]|a(?:$|[^u\n]|u(?:$|[^t\n]|t(?:$|[^h\n]|h(?:$|[^e\n]|e(?:$|[^n\n]|n(?:$|[^t\n]|t(?:$|[^i\n]|i(?:$|[^c\n]|c(?:$|[^a\n]|a(?:$|[^t\n]|t(?:$|[^i\n]|i(?:$|[^o\n]|o(?:$|[^n\n]|n(?:$|[^ \n]| (?:$|[^m\n]|m(?:$|[^e\n]|e(?:$|[^s\n]|s(?:$|[^s\n]|s(?:$|[^a\n]|a(?:$|[^g\n]|g(?:$|[^e\n]|e(?:$|[^\-\n]|-(?:$|[^d\n]|d(?:$|[^i\n]|i(?:$|[^g\n]|g(?:$|[^e\n]|e(?:$|[^s\n]|s(?:$|[^t\n]))))))))))))))))))))))))))))|m(?:$|[^e\n]|e(?:$|[^s\n]|s(?:$|[^s\n]|s(?:$|[^a\n]|a(?:$|[^g\n]|g(?:$|[^e\n]|e(?:$|[^\-\n]|-(?:$|[^d\n]|d(?:$|[^i\n]|i(?:$|[^g\n]|g(?:$|[^e\n]|e(?:$|[^s\n]|s(?:$|[^t\n]|t(?:$|[^\-\n]|-(?:$|[^k\n]|k(?:$|[^e\n]|e(?:$|[^y\n]|y(?:$|[^ \n]))))))))))))))))))))))))[^\n]*\n)*[ \t]*router ospf [^\n]*(?:\n(?:[ \t]*(?:$|[^o \t\n]|o(?:$|[^s\n]|s(?:$|[^p\n]|p(?:$|[^f\n]|f(?:$|[^ \n]| (?:$|[^am\n]|a(?:$|[^u\n]|u(?:$|[^t\n]|t(?:$|[^h\n]|h(?:$|[^e\n]|e(?:$|[^n\n]|n(?:$|[^t\n]|t(?:$|[^i\n]|i(?:$|[^c\n]|c(?:$|[^a\n]|a(?:$|[^t\n]|t(?:$|[^i\n]|i(?:$|[^o\n]|o(?:$|[^n\n]|n(?:$|[^ \n]| (?:$|[^m\n]|m(?:$|[^e\n]|e(?:$|[^s\n]|s(?:$|[^s\n]|s(?:$|[^a\n]|a(?:$|[^g\n]|g(?:$|[^e\n]|e(?:$|[^\-\n]|-(?:$|[^d\n]|d(?:$|[^i\n]|i(?:$|[^g\n]|g(?:$|[^e\n]|e(?:$|[^s\n]|s(?:$|[^t\n]))))))))))))))))))))))))))))|m(?:$|[^e\n]|e(?:$|[^s\n]|s(?:$|[^s\n]|s(?:$|[^a\n]|a(?:$|[^g\n]|g(?:$|[^e\n]|e(?:$|[^\-\n]|-(?:$|[^d\n]|d(?:$|[^i\n]|i(?:$|[^g\n]|g(?:$|[^e\n]|e(?:$|[^s\n]|s(?:$|[^t\n]|t(?:$|[^\-\n]|-(?:$|[^k\n]|k(?:$|[^e\n]|e(?:$|[^y\n]|y(?:$|[^ \n]))))))))))))))))))))))))[^\n]*))*\n?\z

Méthode de correction

Méthode de correction: Recommandation ou correctif d'infrastructure

! - Step 1: Acquire the interface <interface_name> used by the firewall to receive OSPF routing updates and the area ID <area_id> - Step 2: Agree with the neighbor device on the authencation key <key_value> and determine an authentication key ID <key_id> - Step 3: Run the following to enable OSPF authentication interface <interface_name> ospf authentication message-digest ospf message-digest-key <key_id> md5 <key_value> exit area <area_id> authentication message-digest

Propriétés

Systèmes d'exploitation: Tous
Étiquettes: cisco-asanetworkaaa
Référence: CIS Cisco ASA 9.x Firewall Benchmark v1.1.0 - 2.1.1 Ensure 'OSPF authentication' is enabled

Vérifier cet hôte

Exécutez cette commande sur une machine que vous êtes autorisé à auditer. L'analyse est en lecture seule.

shell

tmaegis scan --target cisco-asa --level 2