I'm setting up a HO router with a VPN router. Before I tried to set this up using just ACLS but no luck. so now I've set it up with a tunnel on both ends, the crypto map configs. I can now ping both ends of the tunnel but I'm unsure of the GRE config i need to apply on my ACL. Can I create the following ACL ?
ip access-list extended RCHomeOfficeCrypto_ACL
permit gre host 18.104.22.168 host 22.214.171.124
permit ip 172.16.0.0 0.0.255.255 172.17.25.80 0.0.0.15
permit ip 172.17.0.0 0.0.255.255 172.17.25.80 0.0.0.15
permit ip 192.168.0.0 0.0.255.255 172.17.25.80 0.0.0.15
permit ip 126.96.36.199 0.0.0.255 172.17.25.80 0.0.0.15
All other similar types i've set up i just used GRE statement and using BGP for the rest but for this HO it doesn't support BGP so i'm just trying to set it up using ACLs.