[ILUG] Network Problems

[Paulo Jacob]

Well, this is what is writen below, my bolds:

<quote>
I *can* ssh and ftp to and from machines on the LAN
but *I cannot do the same* to and from the WAN (out side UCC)
</quote>

That seems to me that Gerard cannot ssh to outside UCC, so  I assume he 
is getting an error message.

P.

On 11/25/2009 11:30 AM, Andrew Court wrote:
> He does not get an error when using ftp or ssh as he said he can 
> connect fine with them.
>
> Gerard,
>
> If you port scan the device from the wan do you see any other ports 
> open other than 22 and 21.
>
> To me it sounds like a NAT'ing problem.
>
> -A-
>
> On Wed, Nov 25, 2009 at 11:56 AM, Paulo Jacob <paulo.jacob at gmail.com 
> <mailto:paulo.jacob at gmail.com>> wrote:
>
>     What error do you get when you try to ssh or ftp?
>     Can you ping the machines at all?
>
>     P
>
>
>     On 11/25/2009 10:51 AM, Brendan Minish wrote:
>
>         What does
>         # ip route show
>
>         output?
>
>         is this box is routing or natting? if so
>         # cat /proc/sys/net/ipv4/ip_forward
>         should output 1
>
>         in centos / RHEL / fedora you set this in
>         /etc/sysctl.conf
>         put an entry in (or modify existing )
>         net.ipv4.ip_forward = 0
>
>         # sysctl -p will load in the changed setting
>
>         On Wed, 2009-11-25 at 09:56 +0000, Gerard Hooton wrote:
>
>             Hello All,
>             I have a Debian server with the following problem
>             I can ssh and ftp to and from machines on the LAN
>             but I cannot do the same to and from the WAN (out side UCC)
>             When I do apt-get update it fails to connect
>
>             My iptbles ar as follows:
>
>             Chain INPUT (policy ACCEPT)
>             target     prot opt source               destination
>
>             Chain FORWARD (policy ACCEPT)
>             target     prot opt source               destination
>
>             Chain OUTPUT (policy ACCEPT)
>             target     prot opt source               destination
>
>             I had this type of problem before and I think it was
>             related to iptables
>             but cannot remember.
>             Is there something in /proc/sys/net/ipv4/ ???
>
>             My linux is :-
>             Linux uepc004 2.6.26-2-686 #1 SMP Wed Nov 4 20:45:37 UTC
>             2009 i686
>             GNU/Linux
>
>
>
>
>             -- 
>             Gerard Hooton.
>             Department of Microelectronic Engineering U.C.C.
>             Butler Building,
>             Enterprise Centre,
>             North Mall.
>             Cork.
>
>             Tel: +353 21 4904576
>             Fax: +353 21 4904573
>             http://www.ue.ucc.ie/
>
>
>
>
>
>
>
>     -- 
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