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Re: cannot ssh from outside network

Thank you for your responses. Can you tell me how to check the TCP wrappers? Also, I am new to linux (been on SGIs for ten years). Can you tell me how to
check to make sure the firewall is letting ssh traffic thru?
Many thanks,

Vladimir Kosovac wrote:

Did you check TCP wrappers on (hosts.deny / hosts.allow)
Also, as others suggested, make sure firewall lets through ssh traffic.


On 8/3/06, Manuel Arostegui Ramirez <manuel todo-linux com> wrote:

El Jueves, 3 de Agosto de 2006 01:11, Paula J. Lindsay escribió:
> Hi,
> I have a redhat 9 box.

You should upgrade your box, RH 9.0 is quite old.

> I tried to connect to the redhat 9 box from a machine outside our
> and got the following... 101 worf: ssh -l spooner
>       ssh_exchange_identification: Connection closed by remote host

Use ssh -l spooner -v -v -v
In order to debug find out what's wrong in the autenthication proccess.

> And the following packet capture from inside of our firewall shows
> that born receives the connection and then refuses it with a Fin
> 15:51:13.740835 > S
>       15:51:13.744082 > S
>       15:51:18.821897 > F
> A connection attempt from within our network is successful. Maybe
> this machine is treating hosts from outside of our 137.131 IP space
> differently? Can someone help me?
> Many thanks in advance.
> Paula

Is that box behind a firewall? If so, take a look at those logs.


Manuel Aróstegui Ramírez.

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/        	 	Research Computing, TPC21
o   Scripps		phone:  858.784.9378
\			fax:    858.784.9301
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