Cisco 800 outbound redirect for Cloud Proxy

Question

Hey,
I want to know if it's possible to redirect all outbound HTTP/HTTPS traffic to an external service on a custom port? Example below.
Client points their browser to google.com (port 80) and the router should redirect this request to ExternalProxy:1234.
Thanks for any help.

Answer 1

Sounds like you need a route-map to change the next IP hop?
This would be the best way to do it which will also verify the remote proxy server is available as well.
ip sla monitor 1
type echo protocol ipIcmpEcho <ip address of your proxy server>
timeout 3000
frequency 3
ip sla monitor schedule 1 life forever start-time now
track 123 rtr 1 reachability
interface FastEthernet0/1
ip address <x.x.x.x x.x.x.x>
ip policy route-map REDIRECT-TO-PROXY
ip access-list extended webtraffic
! Deny traffic from your proxy server from redirecting
  deny tcp host <ip address of your proxy server> any eq www
  deny tcp host <ip address of your proxy server> any eq https
  permit tcp <your ip network> <subnet mask> any eq www
  permit tcp <your ip network> <subnet mask> any eq https
route-map REDIRECT-TO-PROXY permit 10
match ip address webtraffic
set ip next-hop verify-availability <ip address of your proxy server> 1 track 123
If you don't already have a NAT rule setup to translate this traffic to the outside here is an example of that:
Here is how my router is configured.
interface FastEthernet0/0
 ip address dhcp hostname home-rtr-1
 ip nat outside
interface FastEthernet0/1
 ip address 10.235.x.x 255.255.255.252
 ip nat inside
ip nat inside source list 10 interface FastEthernet0/0 overload
access-list 10 permit <your ip network> <your ip subnet>
HTH