Question on ISAKMP POLICY <; priority >; GROUP?
Good evening everyone,
I have a few questions about affecting an isakmp group a 4th connection. I read that Im only allowed to use the Group 1,2,5 (on pix to pix firewall), but I've exhausted all 3 groups with my existing connection and Im currently adding another office off site to the network but can't understand how, need whether in 3des as well.
These are my configs to the 3 existing work sites, how could I add the site 4th with 3des encryption?
Crypto ipsec transform-set esp-3des esp-md5-hmac AAA
Crypto ipsec transform-set esp-3des esp-md5-hmac BBB
Crypto ipsec transform-set esp-3des esp-md5-hmac CCC
vpn_remote 10 ipsec-isakmp crypto map
vpn_remote crypto 10 card matches the address AAA
card crypto vpn_remote 10 peers set www.xxx.yyy.zzz
card crypto vpn_remote 10 transform-set AAA
vpn_remote crypto 20 card matches the address BBB
card crypto vpn_remote 20 peers set www.xxx.yyy.zzz
vpn_remote crypto 20 card value transform-set BBB
vpn_remote 30 ipsec-isakmp crypto map
correspondence address 30 card crypto vpn_remote CCC
card crypto vpn_remote 30 peers set www.xxx.yyy.zzz
CCC vpn_remote 30 transform-set card crypto
vpn_remote interface card crypto outside
part of pre authentication ISAKMP policy 10
ISAKMP policy 10 3des encryption
ISAKMP policy 10 md5 hash
10 1 ISAKMP policy group
ISAKMP life duration strategy 10 86400
part of pre authentication ISAKMP policy 20
ISAKMP policy 20 3des encryption
ISAKMP policy 20 md5 hash
20 2 ISAKMP policy group
ISAKMP duration strategy of life 20 86400
part of pre authentication ISAKMP policy 30
ISAKMP policy 30 3des encryption
ISAKMP policy 30 md5 hash
political group 30 ISAKMP 5
ISAKMP duration strategy of life 30 86400
Thank you in advance, I hope someone can give me some input on this.
CYM
You need not to N isakmp policy to support associations N IKE. You can use one for all remote locations. You could live with isakmp policy 10 and use the Group Diffie-Hellman 1 2 or 5 (do not need all three). Just make sure that there are individual cryptographic cards for each site (unless your doing dynamic VPN).
Also you do not need separate transform-sets because you use the same encryption methods in all three sets of transformation that you have defined.
If you do not want to change the configs that above, all you have to do is to create a key isakmp, as well as a new instance of crypto 40 for the 4th remote site map.
Tags: Cisco Security
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