These TCP ports (along with 139 NBsession) are open all all (3) interfaces
of my FW1 NT firewall. Both NAT'd and not.
| -----Original Message-----
| From: [EMAIL PROTECTED]
| [mailto:[EMAIL PROTECTED]]On Behalf Of Vic Metcalfe
| Sent: Monday, August 09, 1999 10:26 AM
| To: Firewall List
| Subject: FW1 and tcp ports 256, 257 and 258
|
|
| Hi,
|
| I recently installed Checkpoint Firewall-1 on an NT Server,
| and I found
| something odd when I was checking it with a series of port scans.
| Everything turned out as expected except for open tcp ports
| 256, 257 and
| 258. What makes this stranger is that these ports were only
| found open on a
| bogus address used for NAT from the Internet to a Domino
| server inside the
| LAN. There were only three (non-implicit) rules, one for
| traffic to the
| Domino server, one for traffic from the Domino server, and
| one to reject all
| other packets, to make the port scan go more smoothly.
|
| If this is a FAQ then you have my apologies; please just
| point me in the
| right direction.
|
| Take care,
| Vic.
|
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