Port forwarding on Cisco Router

[mahesh18]

Hi Everyone,

I need to config Port forwarding on Cisco Router so that users from outside world can access the server say 10.10.10.x on port TCP 8084.

Here is config

interface Dialer0
 ip address negotiated
 ip mtu 1492
 ip nat outside
 ip virtual-reassembly in
 encapsulation ppp
 dialer pool 1
 dialer-group 1
 ppp authentication chap callin
 ppp chap hostname xxxx
 ppp chap password xxxxxx
 ppp ipcp dns request accept
 ppp ipcp address accept
 no cdp enable
 crypto map S2SVPN
end

Current NAT config is

ip nat inside source route-map ISP1 interface Dialer0 overload

Router01#sh route-map ISP1
route-map ISP1, permit, sequence 10
  Match clauses:
    ip address (access-lists): 101
    interface Dialer0
  Set clauses:
  Policy routing matches: 0 packets, 0 bytes

sh access-lists  101
Extended IP access list 101
    5 deny ip 10.10.10.0 0.0.0.255 10.20.20.0 0.0.0.255 (444830 matches)
    10 deny ip 10.10.10.0 0.0.0.255 10.31.1.0 0.0.0.255 (89272 matches)
    20 permit ip 10.0.0.0 0.255.255.255 any (1182278 matches)

Regards

MAhesh

[Reza Sharifi · Accepted solution]

Hi Mahesh,

try something like this:

ip nat inside source static tcp 10.10.10.x 8084 <your public ip> 8084 extend

Thanks,

Reza

[mahesh18]

Hi Reza,

I did below

ip nat inside source static tcp 10.10.10.252 8084  public ip  8084 extendable

Does it make sense?

Regards

MAhesh

[Reza Sharifi]

Hi Mahesh,

To test, try connecting to the server or have the server guys try it from outside (Internet).

HTH

[mahesh18]

Many thanks Reza.

Regards

MAhesh

[mahesh18]

Hi Reza,

I did as you said.

How can i test if router is allowing connection on port 8084?

is this right test

sh ip nat trans

tcp router public ip:8084 10.10.10.252:8084  88.198.46.51:44038 88.198.46.51:44038

Regards

MAhesh