Snort mailing list archives
Re: icmp pass rules
From: "Joel Esler" <eslerj () gmail com>
Date: Fri, 24 Oct 2008 09:06:15 -0400
No, why would say that? Less of a penalty than a pass rule. On Fri, Oct 24, 2008 at 9:02 AM, Stephen Reese <rsreese () gmail com> wrote:
I would assume there's a pretty large penalty for using suppression? http://www.snort.org/docs/snort_htmanuals/htmanual_260/node24.html On Fri, Oct 24, 2008 at 7:59 AM, Joel Esler <joel.esler () sourcefire com> wrote:You should suppression. -- Joel Esler Sent from my iPhone On Oct 24, 2008, at 1:35 AM, "Stephen Reese" <rsreese () gmail com> wrote:I would like pass echo reply's on the internal network but not all ICMP traffic. Currently my rule passes all of the internal ICMP traffic, it there a way to be specific when creating a pass a rule with ICMP? var HOME_NET [172.31.1.0/24,172.31.2.0/24,172.31.3.0/24,172.31.4.0/24,172.31.5.0/24] #Who cares if internal hosts are pinging each other pass icmp $HOME_NET any -> $HOME_NET any (msg:"ICMP Echo Reply"; sid:1000002;) Thanks On Wed, Oct 22, 2008 at 2:02 PM, Stephen Reese <rsreese () gmail com>wrote:On Wed, Oct 22, 2008 at 1:32 PM, Joel Esler <eslerj () gmail com> wrote:Your rules have no "sid" keyword in them. You must put an sid numberinthere above 1 million. JThank you Joel, got it with the following: #Ignore redirects from the main router var 3825ROUTER [172.31.1.1/32] pass icmp $3825ROUTER any -> $HOME_NET any (msg:"ICMP Destination Unreachable Protocol Unreachable"; sid:1000000;) #Chatty Minolta copiers var DI200 [172.31.1.223/32,172.31.1.240/32] pass icmp $DI200 any -> $3825ROUTER any (msg:"ICMP redirect net"; sid:1000001;)
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Current thread:
- icmp pass rules Stephen Reese (Oct 22)
- Re: icmp pass rules Joel Esler (Oct 22)
- Re: icmp pass rules Stephen Reese (Oct 22)
- Re: icmp pass rules Stephen Reese (Oct 23)
- Re: icmp pass rules John Gay (Oct 24)
- Message not available
- Re: icmp pass rules Stephen Reese (Oct 24)
- Re: icmp pass rules Joel Esler (Oct 24)
- Re: icmp pass rules Stephen Reese (Oct 24)
- Message not available
- Re: icmp pass rules Stephen Reese (Oct 24)
- Re: icmp pass rules Stephen Reese (Oct 24)
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- Re: icmp pass rules Stephen Reese (Oct 27)
- Message not available
- Re: icmp pass rules Stephen Reese (Oct 28)
- Re: icmp pass rules Stephen Reese (Oct 22)
- Re: icmp pass rules Joel Esler (Oct 22)
- Re: icmp pass rules Frank Knobbe (Oct 24)
- Re: icmp pass rules Frank Knobbe (Oct 24)
- Re: icmp pass rules Stephen Reese (Oct 24)
- Re: icmp pass rules Frank Knobbe (Oct 24)
- Re: icmp pass rules Stephen Reese (Oct 24)