Help Configure Port Forwarding on Cisco 887

[khonhow_tan]

Hi,

I need to configure the port forwarding on Cisco 887 to forward port  22 on Public IP to a LAN IP port 2200.

I don't know anything on Cisco  router at all, beside telnet to the cisco and quit . Please provide step  by step command.

Thanks a lot.

[cadet alain]

Hi,

on LAN facing interface: ip nat inside

on WAN facing interface: ip nat outside

then in global config:  ip nat inside source static tcp x.x.x.x 2200 interface x 22  where x.x.x.x is LAN IP and interface is WAN interface

Regards.

Alain

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[khonhow_tan]

Hi Alain

Thanks for the reply.

Sorry i am totally new to the Cisco router, what are the command to input after i telnet to the cisco router ?

[cadet alain · Accepted solution]

Hi,

enable ----> enter enable password if any configured

config t

ip nat inside source static tcp 192.168.1.x 2200 interface dialer 0 22

int dialer 0  ----> I suppose this is your WAN interface

ip nat outside

int vlan 1  ---> I suppose this is your LAN interface

ip address 192.168.1.x 255.255.255.0

ip nat inside

Regards.

Alain

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[khonhow_tan]

Thanks again for your kind help Alain. I will give it a try.

[khonhow_tan]

Yeah ! it works. You are great

One last question, is the settings persistant even the router is reboot ?

[cadet alain]

Hi,

of course it is.

Regards.

Alain

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[khonhow_tan]

excellent

[cadet alain · Accepted solution]

Hi,

I forgot to mention that you must issue either a wr command or a copy run start command for the settings to be saved in the startup config and stay after a reboot. Of course this is valid for all configs you do on the device.

Regards.

Alain

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[khonhow_tan]

thanks. i will do that