Wednesday, 5 March 2025

find what DH group an ikev1 S2S VPN is using in ASA

Move away from Groups 2, 5, 24. 

check 6.7 and 7.1 release notes and search for group 5

https://www.cisco.com/c/en/us/td/docs/security/secure-firewall/management-center/device-config/710/management-center-device-config-71/vpn-s2s.html? 


IKEv1

show vpn-sessiondb detail l2l filter ipaddress x.x.x.x

Look for "D/H Group" in IKEv1 section

sh crypto isakmp sa detail | i Grp:


sh crypto isakmp sa | i PFS Group 2,

Looking for groups 2 and 5

 sh crypto isakmp sa detail | i Grp:2,

 sh crypto isakmp sa detail | i Grp:5,


Can copy the full output of " sh crypto isakmp sa detail" to a text file and search

No comments:

Post a Comment