Snort mailing list archives
Re: HELP on configuration
From: Matt Kettler <mkettler () evi-inc com>
Date: Wed, 06 Feb 2002 14:03:47 -0500
try specifying a mask size... if it is a single host the mask is /32 like this: var INFN_AFS_SERVERS [141.108.3.252/32]I suspect your first variable only works because of a implementation issue where such formatting happens when specifying multiple IPs, but as best I know, this is bad form in snort. Every sample rule has a /32 netmask for single IPs, so I'd assume this is the expected input format and specifying an IP address without one is invalid input.
section 2.2.3 of the "writing snort rules" guide even specifically says you need a CIDR type netmask:
"The addresses are formed by a straight numeric IP address and a CIDR[,] block. The CIDR block indicates the netmask that should be applied to the rule's address and any incoming packets that are tested against the rule. A CIDR block mask of /24 indicates a Class C network, /16 a Class B network, and /32 indicates a specific machine address."
http://www.snort.org/docs/writing_rules/chap2.html#tth_sEc2.2.3 At 03:13 PM 2/6/2002 +0100, Enrico M.V. Fasanelli wrote:
Dear all, In particular:var LE_AFS_SERVERS [192.84.152.68,192.84.152.37,192.84.152.83,192.84.152.148,192.84.152.100]var INFN_AFS_SERVERS [141.108.3.252]
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Current thread:
- Slightly OT - Demarc install issue? Jeff Newton (Jan 07)
- Re: Slightly OT - Demarc install issue? Marcus Spading (Jan 07)
- Best Practise Ganu Skop (Feb 06)
- HELP on configuration Enrico M.V. Fasanelli (Feb 06)
- Message not available
- Re: HELP on configuration Matt Kettler (Feb 06)
- Best Practise Ganu Skop (Feb 06)
- Re: Slightly OT - Demarc install issue? Marcus Spading (Jan 07)
- Re: Slightly OT - Demarc install issue? Steve Wingate (Jan 07)