Penetration Testing mailing list archives
RE: pen testing management and control system
From: <Jason.North () ch2m com>
Date: Fri, 27 Jun 2003 13:46:56 -0600
It looks to me like whatever you are scanning either is, or is behind, a proxy based firewall. PBF's will answer (on behalf of any host behind them) on all kinds of ports, but won't pass the traffic unless they have specific configuration to do so (ie an answered port looks blocked). PBF's also have a habit of giving their own info during OS Detection. My guess is a software based firewall running on Win2k (ISA is the first one that comes to mind, but there are several others...) Jason C. North Computer Security Engineer CH2MHill Communications Group (The opinions expressed in this email are not necessarily those of CH2MHill Communication Group)
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At what point in the scan did you get blocked? It looks like the portscan worked, except that there are a whole lot of ports I'd not expect to see on a server like that. Things that stand out are the presence of VNC with Terminal Server AND Metaframe, for example. And Metaframe on 2000 Advanced Server seems like a terrible idea as well, from what I know of the way it handles foreground/background priority, and how it's optimized for specific types of server apps. Are you sure that there isn't some kind of reactive (firewall or IDS) configuration that's meant to throw you some red herrings that automatically block you when you connect to them?
-----Original Message-----
From: Ronen Gottlib [mailto:ronen () avnet co il <mailto:ronen () avnet co il> ]
Sent: Friday, June 27, 2003 4:54 AM
To: pen-test () securityfocus com
Subject: pen testing management and control system
Hi All,
I am pen testing a windows 2000 advanced server, with some
kind of management and control software (e.g. Tivoli,
Netcool). The system has IIS 6.0 running with lockdown enabled.
When I tried to run nessus, my ip was blocked for quite a
long time. same happened with nikto.
Further more, although quite a few ports were found to be
open on the remote machine, the management and control
application is blocking the most of them while allowing
access only to the following: 21, 23(ms telnet server),
25(Microsoft ESMTP MAIL Service, Version: 6.0.2600.1106), 80
(Microsoft-IIS/6.0), 110 (Microsoft Windows POP3 Service
Version 2.0), 3389.
The system is also running Hummingbird Exceed.
Does anyone have any idea? I've kind of reached a dead end.
Below is the results of an Nmap, if it helps.
Thank you very much for your help-
Ronen.
Port State Service
21/tcp open ftp
22/tcp open ssh
23/tcp open telnet
25/tcp open smtp
53/tcp open domain
80/tcp open http
98/tcp open linuxconf
110/tcp open pop-3
111/tcp open sunrpc
135/tcp open loc-srv
143/tcp open imap2
161/tcp open snmp
443/tcp open https
1080/tcp open socks
1433/tcp open ms-sql-s
1494/tcp open citrix-ica
1720/tcp filtered H.323/Q.931
1723/tcp filtered pptp
3389/tcp open ms-term-serv
4000/tcp filtered remoteanything
5135/tcp open unknown
5631/tcp open pcanywheredata
5632/tcp open pcanywherestat
5900/tcp open vnc
6112/tcp open dtspc
6660/tcp filtered unknown
6661/tcp filtered unknown
6662/tcp filtered unknown
6663/tcp filtered unknown
6664/tcp filtered unknown
6665/tcp filtered unknown
6666/tcp filtered irc-serv
6667/tcp filtered irc
6668/tcp filtered irc
6669/tcp filtered unknown
8875/tcp filtered unknown
28900/tcp filtered unknown
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Current thread:
- pen testing management and control system Ronen Gottlib (Jun 27)
- RE: pen testing management and control system Rob Shein (Jun 27)
- Re: pen testing management and control system Mark Wolfgang (Jun 27)
- <Possible follow-ups>
- RE: pen testing management and control system Jason.North (Jun 27)
- Re: RE: pen testing management and control system lawal (Jun 27)
- RE: pen testing management and control system Ronen Gottlib (Jun 27)
- RE: pen testing management and control system Rob Shein (Jun 27)