ipsec passthrough on a router

[sivakondalarao]

Hi,

I want to know that

how to enable IPSec passthrough on a router.

Regards

skrao

[m.sir]

IPSEC Passthrough is a feature of the router that identifies IPSEC traffic and creates port forwards automatically for the PC behind the router

as I know this feature has all Cisco routers so for VPN communication you need permit following protocol/ports ...

protocol esp 50

protocol ah 51

udp port 500 for IKE

udp port 4500 for NAT traversal

M.

[sivakondalarao]

hi,

if you don't mind can u write down complete configuration for that.

Regards

srkao

[m.sir]

edit you access-list aplied to inside interface, let we say that its ACL 101

access-list 101 permit esp any any

access-list 101 permit ah any any

access-list 101 permit udp any any eq 500

access-list 101 permit udp any any eq 4500

M.