Sep 21, 2016 · Cisco Response. This document is a companion to the Cisco Security Advisory IKEv1 Information Disclosure Vulnerability in Multiple Cisco Products and provides identification and mitigation techniques that administrators can deploy on Cisco network devices.

asa1(config-tunnel-ipsec)#ikev1 pre-shared-key this_is_a_key. 13. Create a crypto map and match based on the previously created ACL. asa1(config)#crypto map ikev1-map 1 match address ikev1-list. 14. Configure the peer IP address. asa1(config)#crypto map ikev1-map 1 set peer 10.10.10.2. 15. Assign the previously created transform set. Mar 25, 2019 · IPsec IKEv1 Log Messages and Troubleshooting. Last updated on 2019-03-25 23:18:18; IKEv1 and IKEv2. IKEv2 is supported inside VPN communities working in Simplified mode. IKEv2 is configured in the VPN Community Properties window > Encryption. The default setting is IKEv1 only. IKEv2 is automatically always used for IPv6 traffic. The encryption method configuration applies to IPv4 traffic only. All they can detect is that they got an IKEv1 response. That could also be because of site to site VPNs. And until they commence VPN negotiation (which they can't without an initial authentication) you don't see the encryption algorithms available. Furthermore, the encryption algorithms available are the same for IKEv1 and IKEv2.

Oct 09, 2019 · The vulnerability is due to improper validation of specific IKEv1 packets. An attacker could exploit this vulnerability by sending crafted IKEv1 packets to an affected device during an IKE negotiation. A successful exploit could allow the attacker to cause an affected device to reload, resulting in a DoS condition. Cisco Bug IDs: CSCuj73916.

IKEv2 negociation is much faster than IKEv1 main or agressive modes. Plus you get MOBIKE which gives you almost instant reconnection upon IP address changes (think smartphone switching between WiFi and 4G). IKEv2 all the way. No real bandwidth advantage as IKE is an IPsec session establishment protocol.

IKEv2 negociation is much faster than IKEv1 main or agressive modes. Plus you get MOBIKE which gives you almost instant reconnection upon IP address changes (think smartphone switching between WiFi and 4G). IKEv2 all the way. No real bandwidth advantage as IKE is an IPsec session establishment protocol.

The Racoon2 supports IKEv1, IKEv2 and KINK. The Racoon2 also supports IPsec security policy management with "spmd". The configuration is completely different too, because the Racoon2 system supports multiple key exchange protocols as well as policy management. We however implement IKEv1 based on the Racoon in ipsec-tools.