[ILUG] Network Problems

[Andrew Court]

Aww cr at p. My bad sorry.



On Wed, Nov 25, 2009 at 12:35 PM, Paulo Jacob <paulo.jacob at gmail.com> wrote:

>  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>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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>
>
>