Date: Mon, 26 Mar 2001 17:39:23 -0500 From: Rick Knebel <rknebel@uplink.net> To: questions@freebsd.org Subject: firewall Message-ID: <p05001900b6e574f8558d@[192.168.1.2]>
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Hi, I have set up a simple firewall for my home network and it seems to be working fine. I do run samba to file share with the other computers on my network. I recently had my IP caned for a security and it came back with the following info. 137 udp netbios-ns </securitytest/images/caution.gif> open or filtered Windows 9x and Windows NT use this port to locate other systems on the network with NetBIOS name lookups. Windows NT may also use this port for a logon sequence, and other login security related processes. Leaving this port open may allow an intruder to find an entire list of computers in your workgroup. 138 udp netbios-dgm </securitytest/images/caution.gif> open or filtered Windows 9x and Windows NT uses this port to locate other systems on the network and allow users to browse folders and printers on this computer. Windows may also use this port for NetLogin sequences and NT Directory replication. Leaving this port open may allow an intruder to find an entire list of computers in your workgroup. These two ports 137 nad 138. Can they be blocked and still be able to run samba? Thanks Rick -- Rick Knebel rknebel@uplink.net http://members.tripod.com/~Rick_Knebel/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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