Date: Thu, 4 Jun 1998 11:25:30 +0300 From: Ruslan Ermilov <ru@ucb.crimea.ua> To: Julian Elischer <julian@whistle.com>, hackers@FreeBSD.ORG, net@FreeBSD.ORG Subject: Re: Transparent packet diversion: Where is it? Message-ID: <19980604112530.B27834@ucb.crimea.ua> In-Reply-To: <3575DFDB.2781E494@whistle.com>; from Julian Elischer on Wed, Jun 03, 1998 at 04:44:27PM -0700 References: <3575DFDB.2781E494@whistle.com>
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Hi! I recently wrote a small program which utilizes one divert socket and one udp socket to implement IP-over-IP tunneling. 1. It has a bug: the IP checksum only valid for packets without IP options. This is due to recalculating checksum using in_cksum_hdr(). 2. It lacks crypto-module, I'm planning to implement it soon. 3. You should specify the ``out'' keyword of the ipfw rule if you want your packets to be processed by the redirection-host itself (thus, TTL--). Any feedback will be much appreciated! You can download it from http://www.ucb.crimea.ua/~ru/FreeBSD/iptunnel/ On Wed, Jun 03, 1998 at 04:44:27PM -0700, Julian Elischer wrote: > A month or so ago, someone announced a package that > did redirection of packets to arbitrary places. > > > I remember the comment > "it's wierd seeing all those foreign adresses in the netstat listing". > > kind of like the Linux transproxy code I guess. > > if ANYONE has a pointer to that code I'd apreciate it. > I've done every search I can think of on the mail archives.. > > julian Regards, -- Ruslan Ermilov System Administrator ru@ucb.crimea.ua United Commercial Bank +380-652-247647 Simferopol, Crimea 2426679 ICQ Network, UIN To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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