Snort mailing list archives

Re: HOME_NET


From: James Riden <j.riden () massey ac nz>
Date: Tue, 10 Feb 2004 21:52:11 +1300

msalmanf () students ee itb ac id writes:

Hello everyone

I have trouble in HOME_NET, do i have to add my server's IP Address 
(167.205.64.153/XX)?
what is XX ?

/32 for a single IP address. I think you can omit the /32 in this
case.

If you're doing more than one IP address, you need to look up how
subnet masks and CIDR notation work. e.g. here I'm listening to
X.Y.0.0/16, which covers 65,000 odd addresses. This used to be called
a class B network under the old scheme.

If you look up the subnet mask in your network config, it'll be
something like 255.255.0.0 - convert that to binary and count the
number of 1's, e.g.  11111111.11111111.00000000.0000000 - which gives
me a /16.

cheers,
 Jamie
-- 
James Riden / j.riden () massey ac nz / Systems Security Engineer
Information Technology Services, Massey University, NZ.
GPG public key available at: http://www.massey.ac.nz/~jriden/



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