[Gllug] IPCop and port forwarding

[Xander D Harkness]

will wrote:

>>Murray wrote:
>>
>>    
>>
>>>ipcop$ tail -f /var/log/messages
>>>external$ telnet 213.253.36.55 25
>>>
>>>if it's not showing up in there, it probably isn't the ipcop box that's
>>>blocking it. do you have an adsl modem or anything doing nat inbetween?
>>>
>>>if it is, it'll show you the source/dest ip & ports, as well as whether
>>>it's blocking on INPUT or OUTPUT.
>>>
>>>ipcop 1.2 is ipchains
>>>ipcop 1.3 is iptables
>>>
>>>
>>>
>>>      
>>>
>>I have martians :-)
>>
>>It looks like the packets are being dumped somewhere as SuSE is
>>complaining about illegal packets.
>>
>>It works fine going to another box's ssh port and I can access port 25
>>of the mail server from elsewhere on the network.
>>
>>I am sure it is a switch router trying to be clever! :-)
>>    
>>
>
>Sorry, would have responded to the original post, except I can't find it.
>
>I used to have IPCop and had the same problem.  When you set up IPCop to
>port forward, you need to make another change on another page of the
>interface before it will work.  Unfortunatly I am at work and my IPCop
>machine is sitting on a shelf powered down at home, so I can't look up
>which page it was that I used.  I would persevere with the IPCop interface
>though.
>
That is the external service access, and the ports are open :-)

I am going to try it accessing another mail server in debug mode to see 
if it actually touches the port.

Thanks
Xander

>
>Will.
>
>
>
>  
>



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