Re: Systems behind NAT - port scanning etc.

From:
Date: 10/28/02 

Date: Mon, 28 Oct 2002 22:07:36 GMT

Oh - spoofing...now that's a whole discussion in itself... 

--

Network Tiger Teams
"Because You Just Never Know Who's Sniffing Around In Your Information
Jungle"
www.networktiger.com

"Melinda Shore" <shore@panix.com> wrote in message
news:apkc3b$aak$1@panix2.panix.com...
> In article <Tqiv9.152865$La5.500214@rwcrnsc52.ops.asp.att.net>,
> Network Tiger Teams <information@networktiger.com> wrote:
> >That's the point I was making about router or firewall (whichever is
> >handling the NAT allocations) re-direction or mapping.  It still
potentially
> >leaves an internal host open.  However, if there are no configured
mappings,
> >then the machine is relatively safe from a direct penetration..
>
> Again, it depends on the NAT type and how many network
> "connections" (don't like that word) you've initiated from
> the outside.  Some NATs will forward all incoming traffic on
> a port for which there's a mapping installed, regardless of
> source address.  Presumably that's not a good thing.
> --
>      Melinda Shore - Software longa, hardware brevis - shore@panix.com
>           If you send me harassing email, I'll probably post it

Relevant Pages

  • Re: Does ICS or Firewall have a NAT
    ... >>>A friend of mine said that there's a NAT functionality built into the ICS ... that a NAT creates a mapping of an intranet computers ... >request out to the Internet. ... the Windows Firewall to forward the desired traffic to a specific port ...
    (microsoft.public.windowsxp.network_web)
  • Re: 2000, NAT & port forwarding...
    ... see the mapping happening in NAT --> Show mappings? ... gateway: a.b.c.62 ... I installed NAT and added to INET´s Special Ports ... Incoming port: 80 ...
    (microsoft.public.win2000.ras_routing)
  • Re: Does ICS or Firewall have a NAT
    ... that a NAT creates a mapping of an intranet computers ... When a response arrives from the internet, ... This is all OK and does not require static mapping. ...
    (microsoft.public.windowsxp.network_web)
  • Re: Systems behind NAT - port scanning etc.
    ... >handling the NAT allocations) re-direction or mapping. ...
    (comp.security.firewalls)
  • Re: How to Lookup NAT Mapping?
    ... > Well, NAT generally doesn't rewrite destination addresses, but source ... so that the reply packets reach the NAT router. ... Obviously the rewrite has ... handle the reverse mapping. ...
    (comp.os.linux.networking)