Date: Thu, 02 Dec 1999 20:57:43 -0500 From: Mike Tancsa <mike@sentex.net> To: lew chua <lewc@mmasia.com>, security@FreeBSD.ORG Subject: Re: Need help against spam Message-ID: <4.1.19991202205116.043a38d0@granite.sentex.ca> In-Reply-To: <199912030605.WAA26043@gandalf.mmasia.com>
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At 12:27 PM 12/2/99 , lew chua wrote: >How do I limit the Ip address for sendmail to people on my lan? >: Someone is using my free? I'm running 2.1.7. ipfw is one way. e.g. ipfw add 200 allow tcp from <my local LAN subnet> to <ip of freebsd box> 25 ipfw add 210 deny tcp from any to <ip address of freebsd box> 25 so if your lan network as 192.168.1.0/24 and the FreeBSD box was 192.168.1.119 ipfw add 200 allow tcp from 192.168.1.0/24 to 192.168.1.119 25 ipfw add 210 deny tcp from any to 192.168.1.119 25 However, if you want to fix your open relay, you really should a) upgrade to a current version of sendmail b) see http://maps.vix.com/tsi/ar-fix.html ---Mike ********************************************************************** Mike Tancsa * mike@sentex.net Sentex Communications Corp, * http://www.sentex.net/mike Cambridge, Ontario * 519 651 3400 Canada * To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message
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