Penetration Testing mailing list archives
Re: About Trinoo_Master on 27665 tcp
From: griffkc () gmail com
Date: Thu, 19 Oct 2006 01:19:35 +0000
To really be sure try netcat'ing or telnet'ing to those ports while running a pcap. Sent via BlackBerry from T-Mobile -----Original Message----- From: "Paul Melson" <pmelson () gmail com> Date: Wed, 18 Oct 2006 16:40:54 To:"'Faheem SIDDIQUI'" <fahimdxb () gmail com>,<pen-test () securityfocus com> Subject: RE: About Trinoo_Master on 27665 tcp -----Original Message----- Subject: About Trinoo_Master on 27665 tcp
On my Cisco Router, I do a nmap from outside on the Internet. The result is: " Interesting ports on *.*.50.1: Not shown: 1676 closed ports PORT STATE SERVICE 23/tcp filtered telnet 135/tcp filtered msrpc 1524/tcp filtered ingreslock 27665/tcp filtered Trinoo_Master I am worried about the last two entries. The last nmap was done in Feb
this year and I have confirmed
that the two ports did not exist. Though the state "filtered" is a solace but I am still concerned. How can
O be sure that the system has
not been compromised?
http://insecure.org/nmap/man/man-port-scanning-techniques.html Don't be. The difference between "filtered" and "closed" is that for the closed ports Nmap received a TCP RST packet for that port and for the filtered ports it received no response (like a firewall drop) or an ICMP unreachable packet. I would say it's 99.9% likely that somewhere between your Nmap host and your router a firewall or router is knocking down all traffic to those ports. PaulM ------------------------------------------------------------------------ This List Sponsored by: Cenzic Need to secure your web apps? Cenzic Hailstorm finds vulnerabilities fast. Click the link to buy it, try it or download Hailstorm for FREE. http://www.cenzic.com/products_services/download_hailstorm.php?camp=701600000008bOW ------------------------------------------------------------------------
Current thread:
- VLAN hopping - demonstration dubaisans dubai (Oct 17)
- Re: VLAN hopping - demonstration Ivan . (Oct 17)
- Re: VLAN hopping - demonstration Ulric Eriksson (Oct 18)
- Re: VLAN hopping - demonstration David M. Zendzian (Oct 17)
- Re: VLAN hopping - demonstration Kurt Grutzmacher (Oct 18)
- About Trinoo_Master on 27665 tcp Faheem SIDDIQUI (Oct 18)
- RE: About Trinoo_Master on 27665 tcp Paul Melson (Oct 18)
- Re: About Trinoo_Master on 27665 tcp griffkc (Oct 18)
- About Trinoo_Master on 27665 tcp Faheem SIDDIQUI (Oct 18)
- Re: VLAN hopping - demonstration Ivan . (Oct 17)
- Re: VLAN hopping - demonstration Christian Martorella (Oct 18)