Date: Sat, 12 Oct 2002 10:41:19 -0400 From: Dragan Mickovic <dmickovic@verio.net> To: Maildrop <maildrop@qwest.net> Cc: freebsd-security@freebsd.org Subject: Re: monitor ALL connections to ALL ports Message-ID: <20021012104119.A43753@verio.net> In-Reply-To: <NGBBIILBAKIFGHHCHOHPGEDCFJAA.maildrop@qwest.net>; from maildrop@qwest.net on Sat, Oct 12, 2002 at 12:17:42AM -0500 References: <NGBBIILBAKIFGHHCHOHPGEDCFJAA.maildrop@qwest.net>
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You can just put IPFilter with a default rule to pass and log. By default it will log src,dst,port,len .. ie: Sep 22 19:39:20 server_name ipmon[84]: 19:39:20.251359 fxp0 @0:20 b 192.168.1.20,137 -> 192.168.1.255,137 PR udp len 20 78 IN micko On Sat, Oct 12, 2002 at 12:17:42AM -0500, Maildrop wrote: > > I currently have a DSL line and a FreeBSD firewall/gateway (dual homed). It > has one internal IP address and 5 external IP address (one "real" ip and 4 > alaises on same external nic). > > What I want to do is montior and record (to log) all incoming/outging > connection (just source ip/dest ip/port). If someone connects to my web > server it should log what ip accessed it, the time, which ip (web server > runs on 2 external ip address) and the port. Also if someone does a port > scan against the box I should be able to tell it is a port scan (since one > ip address would be opening up a bunch of ports). > > Right now I don't care what data is being sent/received, just what > connections are being made (and the details about those connections). > > Any suggestions? > > Regards, > Jack > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-security" in the body of the message -- Dragan Mickovic UNIX Systems Administrator NTT/Verio x.4012 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message
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