Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.3 4.3bsd-beta 6/6/85; site mit-amt.MIT.EDU Path: utzoo!watmath!clyde!burl!ulysses!allegra!mit-eddie!mit-amt!simsong From: simsong@mit-amt.MIT.EDU (Simson Garfinkel) Newsgroups: net.bugs.uucp Subject: Re: 4.3 UUCP message: "You are unknown to me" prevents connection Message-ID: <12@mit-amt.MIT.EDU> Date: Sat, 28-Sep-85 22:13:38 EDT Article-I.D.: mit-amt.12 Posted: Sat Sep 28 22:13:38 1985 Date-Received: Mon, 30-Sep-85 01:14:44 EDT References: <911@turtlevax.UUCP> Organization: MIT Media Lab, Cambridge, MA Lines: 42 Summary: "You are unknown to me" problem In article <911@turtlevax.UUCP>, ken@turtlevax.UUCP (Ken Turkowski) writes: > Does anybody know why another site's 4.3BSD uucp won't let me log on, > and instead returns the message, "You are unknown to me"? How can this > be fixed? Does it have anything to do with turtlevax's longer-than 7 > or 8 character name? > > -- > Ken Turkowski @ CADLINC, Menlo Park, CA > UUCP: {amd,decwrl,hplabs,seismo,spar}!turtlevax!ken > ARPA: turtlevax!ken@DECWRL.ARPA We ran into this problem when we recompiled the 4.3 uucp software to use the newly-fangled domain software. The problem is in the "cico.c" module of the UUCP software. It makes the assumption that it is possible to translate from an internet number to a hostname. This opperation is possible if you have a hosttable, but it is not possible if you are using nameservers. Going the other way is possible, but may give problems with computers that have multiple internet numbers. What we finally did was comment out the entire block of code that begins with the following if statement: /* we must make sure they are really who they say they * are. We compare the hostnumber with the number in the hosts * table for the site they claim to be. */ if (IsTcpIp) { /* bogous code follows */ The problem is that the logic of the program didn't work. We decided to delete all of this "security" checking, anyway, since you wouldn't normally get it over phone lines.... If people want "secure" mail, and they are coming over the Internet, then they can use smtp. Ever since we deleted the code, we have had no problems. Simson L. Garfinkel MEDIA-LAB.MIT.EDU