Date: Mon, 1 Jul 2002 21:48:25 +0200 From: Gerhard Sittig <Gerhard.Sittig@gmx.net> To: security@freebsd.org Subject: Re: Making a firewall more closed Message-ID: <20020701214825.L1494@shell.gsinet.sittig.org> In-Reply-To: <01a001c22107$3d3b2850$0200a8c0@winxp>; from nascar24@home.nl on Mon, Jul 01, 2002 at 03:57:23PM %2B0200 References: <01a001c22107$3d3b2850$0200a8c0@winxp>
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On Mon, Jul 01, 2002 at 15:57 +0200, nascar24 wrote:
>
> I've been using the IPFW for some time now but I have one problem. I have
> closed my firewall (I guess) from attacks from the outside world. But I am
> open to attacks from within, i.e: trojan horses etc.
>
> Here is my rc.firewall.rules file. I think it is in rule 500 & 550. But if I
> change them to 21,22,80,8080 I cannot connect to any websites or FTP sites.
>
> [ filter rule set snipped ]
>
> I hope you can help, thanks in advance.
What exactly is your question?
If you want to "less trust the inside", close the inner interface
as much as you did with the outside.
If you are looking for hints on how to generally improve your
filter rules I strongly suggest you have a look at the ipfilter
HowTo -- even if you don't use ipf: this document talks about
the basics, too, plus derives / designes a rule set from bottom
up. Visit www.ipfilter.org or look at the misc/26763 PR (Cyrille
Lefevre, "installing ipfilter sample files to share/examples").
virtually yours 82D1 9B9C 01DC 4FB4 D7B4 61BE 3F49 4F77 72DE DA76
Gerhard Sittig true | mail -s "get gpg key" Gerhard.Sittig@gmx.net
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