RE: Odd entries in my Security Router logs

From: Julian Young (julian.youngat_private)
Date: Tue Dec 10 2002 - 03:28:45 PST

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    The router is performing NAT and statefull packet inspection only.
    
    Currently it had no wan-> lan input channels. and no further ACL
    defined. It's sole purpose is to relieve the fire wall of DHCP duty.
    
    Although it seems to clean up a lot more that that at the moment
    
    Both are on a 255.255.255.0 net mask 
    
    
    
    On Tue, 2002-12-10 at 11:22, Jim Terry wrote:
    > 
    > 
    > Hi Julian,
    > 
    > Can you post some of the router config- namely what logg commands, are you logging on your ACLs, and if you are logging on the ACLs can you post the ACL?
    > 
    > Thanks,
    > 
    > JT
    > 
    > 
    > Jim Terry --- On Mon 12/09, Julian Young  wrote:From: Julian Young [mailto: julian.youngat_private]To: incidentsat_private: 09 Dec 2002 10:37:47 +0100Subject: Odd entries in my Security Router logsI keep seeing these entry in my external routers log files.  Does any
    > one recognize theme and know what type of attack they are. ok is
    > obviously something to do with DHCP.   but i recently had  a firewall 
    > compromised  and i still don't know how.  since that wall had dhcp open
    > I wounder if this could have been the trick. 
    > 
    > I has left the ip number as they are since none of them belong to me or
    > in any range i use ! 
    > 
    > #   Time        Packet Information                             
    > Reason            Action
    >   1|Dec  8 02 |From:192.168.7.249   To:192.168.255.254 |match          
    > |block  
    >    | 09:37:12 |UDP     src port:00068 dest port:00067  |service deny   
    > |      
    >   2|Dec  8 02 |From:192.168.8.250   To:192.168.255.254 |match          
    > |block  
    >    | 09:37:12 |UDP     src port:00068 dest port:00067  |service deny   
    > |      
    >   3|Dec  8 02 |From:192.168.7.249   To:192.168.255.254 |match          
    > |block  
    >    | 15:45:32 |UDP     src port:00068 dest port:00067  |service deny   
    > |      
    > 
    > 
    > 
    > 
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