Snort mailing list archives

non-CIDR address masking in rules?


From: Glenn Forbes Fleming Larratt <glratt () rice edu>
Date: Mon, 5 Nov 2001 16:58:58 -0600 (CST)

Is there a way to use address/mask pairs explicitly in a rule, rather than
CIDR notation? Particularly, does snort have the capability to understand
address/mask pairs that *don't* simplify to CIDR notation, eg:

        172.16.4.0 0.0.8.255 => 172.16.4.0/24 or 172.16.12.0/24

or

        172.16.0.250 0.0.255.15 => anything in 172.16.0.0/16 with a last
                                        octet > 239

?

        -g


                                Glenn Forbes Fleming Larratt
                                Rice University Network Management
                                glratt () rice edu


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