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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,
Paula

Vladimir Kosovac wrote:

Did you check TCP wrappers on 137.131.252.71? (hosts.deny / hosts.allow)
Also, as others suggested, make sure firewall lets through ssh traffic.

V

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
network
> and got the following... 101 worf: ssh -l spooner 137.131.252.71
>       ssh_exchange_identification: Connection closed by remote host
>

Use ssh -l spooner 137.131.252.71 -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
packet...
> 15:51:13.740835 192.42.82.56.1401 > 137.131.252.71.22: S
>       15:51:13.744082 137.131.252.71.22 > 192.42.82.56.1401: S
>       15:51:18.821897 137.131.252.71.22 > 192.42.82.56.1401: 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.

Greetings.

--
Manuel Aróstegui Ramírez.

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 o The			Paula J. Lindsay, IT Analyst III
/        	 	Research Computing, TPC21
o   Scripps		phone:  858.784.9378
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