google returns all kinds of hits.... looks like novell or something.. http://www.google.com/search?q=tcp+port+280
mirror that port and trace what each packet contains.... You should also be looking at the source fo the packets. workstations? servers? printers? etc... Patrick Ramsey Sr. Network Engineer WellStar Health Systems 770.956.6338 >>> "Martin Roy" 01/14/02 10:55AM >>> Can any one tell me which application is using port 280? I get several hits on my access-list from port 280 but I cannot seem to narrow the source. Thanks Martin Martin Roy Network Support Specialist Nuvo Network Management Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=31871&t=31867 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]