SMTP Port Forwarding 1

[Monty99]

Hello,

I have a CISCO 801 router. I have used Fast Step Setup programme to configure router. I can access the net, send emails out but can't receive emails into my office.

I have done this before, and I remember it's to do with Port Forwarding. I believe theres supposed to be a line in the config such as " IP NAt etc. Something about port 25 etc. and the IP addresses"

Assume the IP address our ISP has given us is 62.111.99.2, does anyone know what code I'm supposed to add to the config, AND where.

Hope you can help.

Monty99
:-(

 

[stoney66]

ip nat inside source tcp |private-ip| 25 |nat| 25 extendable

 

[Monty99]

Thanks very much for your reply. That's it...., but where in the CISCO programme do I put this line? Is it under Ethernet0????

Will experiment unless I hear different.

Thanks.

Monty99

 

[mtnwinds]

Monty99

I have the same problem and have done the following:

external NIC: 10.x.x.x
WAN side of router: 67.x.x.x

ip nat inside source static tcp 10.x.x.x 25 67.x.x.x 25 extendable

Just start a conf t session and type the line in. It will be placed in the correct place.

You can test by setting up a telnet session from a computer outside your domain and see if you can talk. This is all new to me so, hopefully, I'm not giving you bad info ;>)

mtnwinds

 

[mtnwinds]

Monty99

I have the same problem and have done the following:

Given that you have:
external NIC: 10.x.x.x
WAN side of router: 67.x.x.x

ip nat inside source static tcp 10.x.x.x 25 67.x.x.x 25 extendable

Just start a conf t session and type the line in. It will be placed in the correct place.

You can test by setting up a telnet session from a computer outside your domain and see if you can talk. This is all new to me so, hopefully, I'm not giving you bad info ;>)

mtnwinds

 

[tmCCNA]

stoney66,

you would apply:
ip nat inside source tcp |private-ip| 25 |nat| 25 extendable
to your lan port, probably e0 on your 800 series router
Travis McGuire

http://www.business-ky.com

 

[tmCCNA]

disregard my last post, i failed to read the two posts above mine. i just got as far as "I have the same problem." Travis McGuire

http://www.business-ky.com

 

[Monty99]

OK Guys. Thanks for your replies. I have telnetted into Router, but it keeps telling me there's an error at ^

As I'm doing something wrong here, if I give you some details, can you type in some instructionds for me?

My internal IP address of router is 10.X.X.1
The IP address of my ISP is 62.x.x.35
Do you need the IP address of my Exchange server? If so, it 10.x.x.162

My router name is router.
I've type in "en" and got to:
router#

I then typed configure and got to:
router(configure)#

What do I type in next?? I've tried to enter INTERFACE ETHERNET 0, but not sure what to do. Can you explain for idiot?

Thanks,

monty99

 

[Monty99]

Hi Guys,

Please ignore previous plead for help. Eventually type in:

ip nat inside source static tcp 10.X.X.X 25 62.X.X.X 25 extendable

Reaslised I'm supposed to press CTRL Z and then WR to write the configuration. Now working OK .......except another minor problem. Will post later.
Good forum.
Thanks for your help.

Monty99