GEN:SID 1:558
Message INFO Outbound GNUTella client request
Summary A network-external server has authenticated an internal GNUTella client
connection attempt and they have begun communications.
Impact Possible policy violation.
Detailed Information GNUTella is a P2P (Peer-to-Peer) protocol for exchanging arbitrary
files.  Depending on your site's policies, using it may be a policy
violation.

If not properly configured, GNUTella clients may accidentally share out
confidential files.  GNUTella worms (which use deceptive names to
encourage download) and viruses may also be accidentally downloaded by a
client.

This rule being triggered means that a GNUTella client has been detected
on the protected network.
Affected Systems Any system with a GNUTella client installed (available for most
platforms)
Attack Scenarios N/A
Ease of Attack N/A
Corrective Action Depends on acceptable use policies.
Additional References GNUTella
http://www.gnutella.com