Date: Tue, 12 Jun 2001 23:50:14 +0300 (EEST) From: Evren Yurtesen <yurtesen@ispro.net.tr> To: "Thomas T. Veldhouse" <veldy@veldy.net> Cc: Jason DiCioccio <Jason.DiCioccio@Epylon.com>, <freebsd-security@FreeBSD.ORG> Subject: Re: IPFW almost works now. Message-ID: <Pine.BSF.4.33.0106122349160.63354-100000@finland.ispro.net.tr> In-Reply-To: <01fe01c0f37e$c5948e10$3028680a@tgt.com>
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it cant be about port 20 or 21 he says that he is able to login but he cant get a data connection which happens to be at a higher port! if I am correct! Evren On Tue, 12 Jun 2001, Thomas T. Veldhouse wrote: > No you don't. My servers run fine for active and I DON'T allow access to > all inbound above 1024. > > Open up tcp/20 and tcp/21 statefully and you will be rocking and rolling. > > Tom Veldhouse > veldy@veldy.net > > ----- Original Message ----- > From: "Jason DiCioccio" <Jason.DiCioccio@Epylon.com> > To: "'Marcel Dijk'" <nascar24@home.nl>; <freebsd-security@freebsd.org> > Sent: Tuesday, June 12, 2001 2:25 PM > Subject: RE: IPFW almost works now. > > > > > > -----BEGIN PGP SIGNED MESSAGE----- > > Hash: SHA1 > > > > Welcome to the shitty protocol that is: FTP. To use active ftp, you > > need to allow connections to all inbound ports above 1024. To allow > > passive FTP, you need to allow outbound connections to all ports > > above 1024. FTP is obsolete, too bad everyone still uses it though. > > > > Cheers, > > - -JD- > > > > > > > > - -----Original Message----- > > From: Marcel Dijk [mailto:nascar24@home.nl] > > Sent: Tuesday, June 12, 2001 12:12 PM > > To: freebsd-security@freebsd.org > > Subject: IPFW almost works now. > > > > > > Hello, > > > > Thanks to some advice here and http://freebsddiary.org my IPfirewall > > is > > almost how I want it now. > > > > Only to ports I want to be open are open now, and I can access the > > services > > behind these ports. The only problem is FTP. If I try to access the > > FTP > > daemon on port 5617 from for example my work (the FTP daemon runs at > > home) I > > get an error. > > > > I can connect, I have to give my username and pass. It then > > esstablishes a > > connection and tries to execute the LIST command. But then I get this > > error > > > > _______________________________________ > > Can't build data connection: interrupted system call. > > ABOR command succesfull. > > Connection Lost > > _______________________________________ > > > > If I set the firewall wide-open everything works perfectly, but > > ofcourse I > > don't want a wide open firewall. > > > > I have these IPFW rules defined: > > > > ________________________________________ > > 00100 allow ip from any to any via lo0 > > 00200 deny ip from any to 127.0.0.0/8 > > 00220 divert 8668 ip from any to any via ed0 > > 00400 deny ip from 127.0.0.0/8 to any > > 00615 allow tcp from any to MY_IP 22,5617,10000 > > 00625 allow tcp from MY_IP to any > > 00650 allow udp from any to MY_IP > > 00700 allow udp from MY_IP to any > > 00750 allow icmp from MY_IP to any > > 00800 allow icmp from any to MY_IP it +---------------------------------------------------------+ | Name : Evren Yurtesen - yurtesen@ispro.net.tr | | Job Title : Technical Consultant & System Administrator| | S-Mail : Talikkokatu 6B 26, Turku 20540, Finland | | Work Tel. : +90-232-2463992 | | Mobile Tel.: +358-40-5073940 | +---------------------------------------------------------+ > > 00850 allow ip from 192.168.0.0/16 to any > > 00900 allow ip from any to 192.168.0.0/16 > > 65535 deny ip from any to any > > ________________________________________ > > (MY_IP is my public/internet IP) > > > > Can anyone give me some advice on what the problem is and how I can > > solve > > it. Just a reminder: all the other services work perfectly with this > > FW > > configuration. > > > > Marcel > > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > > with "unsubscribe freebsd-security" in the body of the message > > > > -----BEGIN PGP SIGNATURE----- > > Version: PGPfreeware 7.0.3 for non-commercial use <http://www.pgp.com>; > > > > iQA/AwUBOyZtXlCmU62pemyaEQJaLwCfbnpgCZAxYcr0kw+S9EAmD72AIt0An1ML > > VsjpyCAbVE/YVGtFK3wi6cBW > > =18Ea > > -----END PGP SIGNATURE----- > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > > with "unsubscribe freebsd-security" in the body of the message > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-security" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message
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