SSH problems (from the beginning)

[Waleed Harbi]

May be you have firewall, try iptables -F command  to remove firewall rules.
don't' forget monitoring you log via tail -f /var/log/messages command it
will help you to debugging the problems.

On 5/3/06, Miner, Jonathan W (CSC) (US SSA) <jonathan.w.miner at baesystems.com>
wrote:
>
>
> > -----Original Message-----
> > From: redhat-list-bounces at redhat.com on behalf of cemaaiem at 30gigs.com
> > Sent: Tue 05/02/2006 04:56 PM
> > To:   redhat-list at redhat.com
> > Cc:
> > Subject:      SSH problems (from the beginning)
> >
> > if i do NSLOOKUP in A the reponse is Server inexistent
>
> I would take a step back, and consider how SSH, Ping, and DNS are
> related.  Then work this problem like this:
>
> 1) Fix your name resolution... make sure that you can perform lookups by
> name, and reverse lookups by IP address.  Double check on both machines.
>
> 2) Check your IP addresses and netmasks, and get ping to work.  You should
> be able to ping both by name and IP address.  Make sure you can ping A->B
> and B->A
>
> 3) Now with working name resolutions, and working networking, try to
> tackle your SSH issues.
>
> Good Luck
>
>
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Best Regards
Waleed Harbi
Saudi Arabia