How to check packets between server and client

1. Establish a snoop system off a hub connected to either the client or server.

   The third system (the snoop system) sees all the intervening traffic, so the snoop trace reflects reality on the wire.

2. As root, type snoop with options and save to a file.

3. Inspect and interpret results.

   Look at RFC 1761 for details of the snoop capture file. To access, use your favorite web browser with the URL: http://ds.internic.net/rfc/rfc1761.txt

Use snoop frequently and consistently to get a feel for normal system behavior. For assistance in analyzing packets, look for recent white papers and RFCs, and seek the advice of an expert in a particular area, such as NFS or YP. For complete details on using snoop and its options, refer to the snoop(1M) man page.