Security Basics mailing list archives
RE: How to find process behind TCP connection ?
From: "Buozis, Martynas" <martynas () ti com>
Date: Thu, 28 Sep 2006 19:47:13 +0200
I am not sure, that server behavior is normal when server is connecting to many clients (NOT clients TO server) as Admin user. I suppose normal is when many clients are connecting to server, not other way round. I will try tools other suggested. Thanks everyone for ideas! If there will be more - please let me know. I will also inform if I will succeed to find right tool or method for my task. With best regards Martynas -----Original Message----- From: Robert D. Holtz - Lists [mailto:robert.d.holtz () gmail com] Sent: Thursday, September 28, 2006 6:11 PM To: Buozis, Martynas; security-basics () securityfocus com Subject: RE: How to find process behind TCP connection ? The behavior that you're seeing could be completely normal. Windows does all kinds of things via port TCP/UDP 139. You would need to attach a sniffer to dig deeper into the packet payloads in order to determine what's up. Here's a list of some of the services that use port 139: Function Static ports -------- ------------ Directory Replication UDP:138 TCP:139 Event Viewer TCP:139 File Sharing TCP:139 Logon Sequence UDP:137,138 TCP:139 Pass Through Validation UDP:137,138 TCP:139 Performance Monitor TCP:139 Printing UDP:137,138 TCP:139 Registry Editor TCP:139 Server Manager TCP:139 Trusts UDP:137,138 TCP:139 User Manager TCP:139 WinNT Diagnostics TCP:139 WinNT Secure Channel UDP:137,138 TCP:139 -----Original Message----- From: listbounce () securityfocus com [mailto:listbounce () securityfocus com] On Behalf Of Buozis, Martynas Sent: Tuesday, September 26, 2006 3:35 PM To: security-basics () securityfocus com Subject: How to find process behing TCP connection ? Hello I need an advice. I have Windows 2003 server. It occasionally show strange and suspicious network behavior. I used command "netstat -abov" and Process explorer tool from Sysinternals to find process behind connections. I found that it is "System 4" and got stuck. How I can identify what is behind this "System 4"? I thought it may be hidden process, but RootkitReveal from Systinternals did not show anything. I will be grateful for any ideas how to identify what is behind these TCP connections from server to many computers! Thank you in advance. With best regards Martynas ------------------------------------------------------------------------ --- This list is sponsored by: Norwich University EARN A MASTER OF SCIENCE IN INFORMATION ASSURANCE - ONLINE The NSA has designated Norwich University a center of Academic Excellence in Information Security. Our program offers unparalleled Infosec management education and the case study affords you unmatched consulting experience. Using interactive e-Learning technology, you can earn this esteemed degree, without disrupting your career or home life. http://www.msia.norwich.edu/secfocus ------------------------------------------------------------------------ --- --------------------------------------------------------------------------- This list is sponsored by: Norwich University EARN A MASTER OF SCIENCE IN INFORMATION ASSURANCE - ONLINE The NSA has designated Norwich University a center of Academic Excellence in Information Security. Our program offers unparalleled Infosec management education and the case study affords you unmatched consulting experience. Using interactive e-Learning technology, you can earn this esteemed degree, without disrupting your career or home life. http://www.msia.norwich.edu/secfocus ---------------------------------------------------------------------------
Current thread:
- RE: How to find process behing TCP connection ?, (continued)
- RE: How to find process behing TCP connection ? Buozis, Martynas (Sep 28)
- Re: How to find process behing TCP connection ? Daniel DeLeo (Sep 28)
- Re: How to find process behing TCP connection ? Mario A. Spinthiras (Sep 29)
- Re: How to find process behing TCP connection ? Daniel DeLeo (Sep 29)
- Re: How to find process behing TCP connection ? Ansgar -59cobalt- Wiechers (Sep 28)
- Re: How to find process behing TCP connection ? Mario A. Spinthiras (Sep 28)
- Re: How to find process behing TCP connection ? Ansgar -59cobalt- Wiechers (Sep 27)
- Re: How to find process behing TCP connection ? Mario A. Spinthiras (Sep 28)
- Re: How to find process behing TCP connection ? Umil (Sep 28)
- RE: How to find process behind TCP connection ? Robert D. Holtz - Lists (Sep 28)
- RE: How to find process behind TCP connection ? Buozis, Martynas (Sep 28)