[fw-wiz] False results to DMZ

First off, the DMZ is setup with virtual interfaces (PIX), and the
scanning source is inside. The firewall allows anything IP from this
scanner. If I scan most of the DMZ's, I get normal results, with all of
the scans.
Using NMAP, If I scan one specific DMZ, I only get results with the SYN
scan and TCP window scans, AND it says every port is open (what the
firewall allows). Cisco support is not being helpful. Does anyone have
any idea why this is? It's weird. Im trying to automate Nessus against
the DMZ servers, and its giving too many false positives about open
ports.
I have taken packet traces, and the only thing weird is that I am
getting an ACK back for eveyr port, but they are Zero Window (TCP Window
Scan brings back every port open).
Any ideas?
_______________________________________________
firewall-wizards mailing list
firewall-wizards@xxxxxxxxxxxxxxxxxx
http://honor.icsalabs.com/mailman/listinfo/firewall-wizards

Relevant Pages

  • Re: Firewall/VPN
    ... > the ones that are DMZ capable. ... They actually have an extra Port called ... > the D-link regurdless of having as much features or even more seems to ... Most firewall devices can sense an attack ...
    (comp.security.firewalls)
  • Re: OWA connectivity
    ... If you're using PIX on your first firewall and use Checkpoint on ... opened and hosts to which they must be opened between the DMZ and Intranet ... First though I'd like to admit I made a mistake in talking about SMTP port ... Whether or not you use a proxy server in this setup is up to ...
    (microsoft.public.exchange.admin)
  • RE: [fw-wiz] False results to DMZ
    ... The firewall allows anything IP from this scanner. ... > Using NMAP, If I scan one specific DMZ, I only get results with the SYN ... AND it says every port is open. ... Can you post a sanitized version of your PIX config? ...
    (Firewall-Wizards)
  • Re: Dual nic with DMZ via firewall
    ... the WAN NIC to be in our firewalls DMZ. ... email or rww would be protected via DMZ firewall rules. ... If the SBS box is compromised then it also exists on the LAN so maybe ... If you have the SBS server WAN port in the DMZ and your Firewalls LAN is ...
    (microsoft.public.windows.server.sbs)
  • Re: OWA connectivity
    ... First though I'd like to admit I made a mistake in talking about SMTP port ... Secondly opening these ports from your DMZ towards your LAN is not insecure ... Whether or not you use a proxy server in this setup is up to you. ... I feel is not a true firewall and should be used as ...
    (microsoft.public.exchange.admin)