Date: Wed, 19 May 1999 09:59:30 +0200 (MET DST) From: John K <john@volvo.se> To: Tony <wop@uwsnet.com> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: SYN FLOODS Message-ID: <Pine.BSD/.3.91.990519094129.28004B-100000@nike.volvo.se> In-Reply-To: <3741E64C.BE07B1E4@uwsnet.com>
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Hi, Im quite new to FreeBSD, but setting up a box as a Firewall and Address Translator should work, if you have the possibility. Depending in how may machines you want to protect (and from what). If you have a lot of traffic going thru a firewall, lots of processing power may be needed. This weekend went to a LAN-Game party thing, the organizors had totally screwed upp the network. There were about 500 computers but no Subnets!!! Anyway i wanted to protect my W98 macinhe from brodcast storms and such, so i put it behind a FreeBSD box, with an open firewall but running natd with the "-d" switch, which i think denyes incomming traffic if it isnīt requested by machines on the "inside". I know this maybe far from the best option but the FreeBSD machine (P120, 80Mb Ram, FBSD 3-1R) handeled sweet, and also protected my stupid W98 box from IP spoofing. Check the man pages for natd. itīs a pretty good general guide on how to set it up. Good Luck /john On Tue, 18 May 1999, Tony wrote: > Hello, > > I am having trouble with DOS attacks via SYN FLOODS i was told there > was a way to prevent these with FreeBSD if there is can you please reply > back with some information. > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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