RE: Dns Port Problems
> On Sun, Mar 21, 2004 at 08:35:20PM +0200, George Roman wrote:
> > this is the result of nmap started from my local
> > workstation(172.16.35.137), when the DNS...server had
> > no firewall(/etc/init.d/iptables clear)
> > ^^^^^^^^^^^
> > 53/tcp open domain
>
> > this is the result of nmap started from the station
> > situated on the internet(x.y.z.t), when the DNS
> > ..server had no firewall(/etc/init.d/iptables clear)
> > ^^^^^^^^^^
> >
> > 53/tcp filtered domain
>
>
> There's a firewall somewhere between x.y.z.t and 172.16.35.137.
> Traceroute is your friend. If its between your isp and
> 172.16.35.37 that would be the problem. Can you get the ISP's
> server to
> nmap you (or equivilent)?
Try `nmap -sU 172.16.35.137`
The DNS queries are probably using UDP over TCP.
HTH,
Mark.
Salamis Group of Companies - WWW.SALAMISGROUP.COM
This communication contains information which is confidential and may
also be privileged. It is for the exclusive use of the intended
recipient(s). If you are not the intended recipient(s) be advised
that any form of distribution, copying or use of this communication
or the information it contains is strictly prohibited and may be
unlawful. We apologise if you have received this communication in
error. Please return it to the sender immediately, delete this
communication from your computer and destroy any copies of it. Any
views/opinions expressed in this email are that of the author and may
not reflect the views of Salamis (M&I)Ltd.
Reply to: