Security Basics mailing list archives
Re: Blocking NetBios
From: Ansgar -59cobalt- Wiechers <bugtraq () planetcobalt net>
Date: Tue, 15 Jun 2004 13:58:42 +0200
On 2004-06-12 kitty () cert org cn wrote:
How can I know if NetBios of my system is available or not ?
You know it, if a port scan from a remote system reveals that ports 137-139 are open.
Whether typing command "netstat -an" to see if the port 139 is open or not?
That may or may not be sufficient. Use a portscan to know for sure.
Then what are the port 135, 137,138, 445 used for? After disable the TCP/IP--> Win--> over TCP/ip NetBios , only 139 is disabled. who can explain it?
135 -> RPC Endpoint Mapper (needed for NetBIOS and other services) 137 -> NetBIOS Name Service 138 -> NetBIOS Datagram 139 -> NetBIOS Session 445 -> Direct SMB (Windows shares without NetBIOS) HTH Regards Ansgar Wiechers --------------------------------------------------------------------------- Ethical Hacking at the InfoSec Institute. Mention this ad and get $545 off any course! All of our class sizes are guaranteed to be 10 students or less to facilitate one-on-one interaction with one of our expert instructors. Attend a course taught by an expert instructor with years of in-the-field pen testing experience in our state of the art hacking lab. Master the skills of an Ethical Hacker to better assess the security of your organization. Visit us at: http://www.infosecinstitute.com/courses/ethical_hacking_training.html ----------------------------------------------------------------------------
Current thread:
- Re: Blocking NetBios faisyuet (Jun 11)
- <Possible follow-ups>
- RE: Blocking NetBios George Peek (Jun 11)
- Re: Blocking NetBios Kareem Mahgoub (Jun 14)
- RE: Blocking NetBios Kirk Brady (Jun 11)
- RE: Blocking NetBios Velasquez Venegas Jaime Omar (Jun 11)
- RE: Blocking NetBios Andrew Shore (Jun 11)
- Re: Blocking NetBios cert (Jun 14)
- Re: Blocking NetBios Ansgar -59cobalt- Wiechers (Jun 15)
- Re: Blocking NetBios cert (Jun 14)
- Re: Blocking NetBios faisyuet (Jun 11)
- Re: Blocking NetBios cert (Jun 14)
- RE: Blocking NetBios Depp, Dennis M. (Jun 14)
- RE: Blocking NetBios Brunner, Mark (Jun 14)
- RE: Blocking NetBios Andrew Shore (Jun 15)
- RE: Blocking NetBios Dan Denton (Jun 16)
- Re: Blocking NetBios Ansgar -59cobalt- Wiechers (Jun 16)
- Re: Blocking NetBios Doug Massey (Jun 20)
- RE: Blocking NetBios Bob Walton (Jun 22)
- RE: Blocking NetBios Streeter, Joseph (WI) (Jun 28)