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Date:      Tue, 07 Apr 1998 00:04:01 +0100
From:      Karl Pielorz <kpielorz@tdx.co.uk>
To:        s_martin@apics-hq.org
Cc:        freebsd-questions@FreeBSD.ORG
Subject:   Re: Block IP address
Message-ID:  <35295F61.B46BE57F@tdx.co.uk>
References:  <3192A1127F7@apics_3.apics-hq.org>

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The quickest (but not best way) is by simply routing their traffic to
'never-never' land...

e.g.

route add their.ip.add.ress somewhere.that.don't.exist

For example:

route add 158.152.1.65 192.168.200.100

Means you will still get data from them, but your system won't send them
anything back...

_BEFORE_ I get flamed for that, the 'proper' way is to either block it at
your networks router - or you can block it at your FreeBSD box by setting it
up to use 'ipfw' (IP Firewall).

The IPFW is the better way to go... Have a look through the FAQ's (and
rc.conf) - if your still stuck let me know - I'll send you some example
stuff...

_BE WARNED_ You should have console access to do this, as it's _very_ easy
to leave the machine in a state where it won't talk to anyone on any LAN's
it's connected to... ;-)


Regards,

Karl Pielorz


Sherry Martin wrote:
> 
> I am fairly new at the FreeBSD operating system and was hoping
> someone might be able to answer a question for me.  I currently use
> FreeBSD as my mail gateway and would like to explicity block an IP
> address -- Can anyone tell me how to do this?
> 
> Thanks
> 
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