I was running some scans against some of my pix 515's and 2651 routers with Nessus (www.nessus.org), and it told me the following text:
general/tcp (Security warning found)
"The remote host uses non-random IP IDs, that is, it is
possible to predict the next value of the ip_id field of
the ip packets sent by this host.
An attacker may use this feature to determine if the remote
host sent a packet in reply to another request. This may be
used for portscanning and other things.
Solution : Contact your vendor for a patch
Risk factor : Low"
What does this mean? and is this something that I should be concerned about?
Thx
Rose Miller