The application of SECURITY for VPN LAN to LAN traffic!

I have a question on the forum,

Can apply you security for inbound ipsec traffic once it has been deciphered? I did some research and cannot come to this conclusion, with a LAN to LAN Vpn using ipsec allowed sysopt command bypass you all ACL audit (the access list incoming or conducted applied to the external interface) and cannot so apply any security to inbound traffic to your internal network via the VPN any VPN interface ends at. It is my understanding that instead of using the permitted sysopt command ipsec, you can allow protocol 50 (esp) in your firewall allowing traffic to reach the firewall and be decrypted BUT can you then apply any security to it? He will re-evaluate himself against the inbound ACL applied to the external interface?

-Jeremy

Hi Jeremy,.

Your understanding is to a specific point. Once the packet is decrypted, it will reassess not himself against the acl entering applied outward whetther regardingless configuring acl or use sysopt. Thank you

Renault

Tags: Cisco Security

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