Firewall and open ports

Jack Bowling jbinpg at shaw.ca
Tue Jun 12 19:00:05 UTC 2007


On Tue, Jun 12, 2007 at 05:41:20AM -0700, Victor Mendonça wrote:

Testing a firewall from within the same subnet will always show more
open ports than someone from the outside would see. The only true test
is to sscan the box from a subnet other than your own box.

Jack

> I think those are related to an HP printer .....
> - ipp		631/tcp    IPP (Internet Printing Protocol)
> - hpssd		2207/tcp   HP Status and Services
> - hpiod		2208/tcp   HP I/O Backend
> 
> You can check out more here:
> 
> http://www.iana.org/assignments/port-numbers
> 
> 
> Vic.
> 
> 
> ----- Original Message ----
> From: Stan Vincent <sch3u at yahoo.com>
> To: The Canadian Ubuntu Users Community <ubuntu-ca at lists.ubuntu.com>
> Sent: Tuesday, June 12, 2007 6:58:25 AM
> Subject: Firewall and open ports
> 
> Hi all:
> I am new to Linux dont know if this makes sense however,
> I used nmap and nmapfe to test my firewall and I find the following ports open, is it normal, or why is it open any information would be helpful.
> 
> PORT     STATE SERVICE
> 631/tcp  open  ipp
> 2207/tcp open  unknown
> 2208/tcp open  unknown
> Device type: general purpose
> 
> I used the following link to set up a basic firewall.
> 
> http://doc.gwos.org/index.php/IptablesFirewall
> 
> 
> Stan
> 
> Mr. V 
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