From: Digestifier To: Linux-Admin@senator-bedfellow.mit.edu Reply-To: Linux-Admin@senator-bedfellow.mit.edu Date: Tue, 6 Sep 94 08:16:27 EDT Subject: Linux-Admin Digest #28 Linux-Admin Digest #28, Volume #2 Tue, 6 Sep 94 08:16:27 EDT Contents: Re: Using an Exabyte with Linux (root) Re: FTP via TERM (Patrick Reijnen) Re: WARNING about shadow-mk package (Joe Zbiciak) 2 ethernet cards? (Anto Daryanto) Re: limits (Tracy R. Reed) Re: linux & ISDN (Dave Gardner) Re: .bashrc does not exec... (David Kastrup) UID 0 Passwd blues (Anton de Wet) Re: [ALERT] Password problem with Linux Re: gated.conf, Does anyone have this puppy working on a linux box. (steve@snopc50.stl.dec.com) Re: [Q] lynx with term support ? (Jay Schlieske) Re: [Q] routed problems (steve@snopc50.stl.dec.com) Re: Remote Shell from linux to Solaris? (Jens Krauss) Re: Monitoring TTY's .. (Tracy R. Reed) Re: QUOTA available for v1.1.49 yet? (Wayne Hodgen) Re: UID 0 Passwd blues (David Kastrup) Re: What is my root password???????? (Anton de Wet) 525MB streamer that wouldn't backup 300MB: SOLVED! (Eelco H. Essenberg) ---------------------------------------------------------------------------- From: root@kirk.in-berlin.de (root) Subject: Re: Using an Exabyte with Linux Date: 5 Sep 1994 20:48:18 +0200 Thanks, all together here is summary of what cured the problem. There are two things which helped me 1) The external cable wasn't connected properly :-( 2) I had to boot up with a tape inserted. After I straightened the cable out a bit and reconnected it, it works sometimes but when I have a tape inserted yt boot up it works like a charme. But I really don't know why it needs the tape By the way, when it is driven by the sun you can boot up without a tape! Thanks again, Achim ------------------------------ From: patrickr@cs.kun.nl (Patrick Reijnen) Subject: Re: FTP via TERM Date: Tue, 6 Sep 1994 06:38:45 GMT In ddelsig@uoft02.utoledo.edu writes: >>There is also ncftp170 for term. Works fine for me and KNOWS macro's. You can find it on sunsite.unc.edu:/pub/Linux/apps/comm/termstuff. >> >> >> >>Patrick REijnen >That's an ftp client application. We are talking about the ftp daemon. Oops yes, I see, but some deamons are also available in that directory. >Dave >,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, >``````````````````````````````````````````````````````````````````````````````` > _/_/_/_/ _/_/ _/_/ _/_/_/_/ David M. Del Signore > _/ _/ _/_/ _/_/ _/ _/ University of Toledo > _/ _/ _/ _/ _/ _/ _/ _/ Toledo, Ohio > _/ _/ _/ _/_/ _/ _/ _/ > _/ _/ _/ _/ _/ _/ _/ ddelsig@uoft02.utoledo.edu >_/_/_/_/ _/_/ _/_/ _/_/_/_/ suprdave@esserv01.eng.utoledo.edu >,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, >``````````````````````````````````````````````````````````````````````````````` Patrick Reijnen -- ************************* Patrick Reijnen ************************* * Department of Computer Science, Catholic University of Nijmegen * * Email: patrickr@{sci,cs}.kun.nl * * WWW: http://{atlas,zeus}.cs.kun.nl:4080/homepage.html * ------------------------------ From: im14u2c@cegt201.bradley.edu (Joe Zbiciak) Crossposted-To: comp.os.linux.development,comp.os.linux.help,comp.os.linux.misc Subject: Re: WARNING about shadow-mk package Date: 6 Sep 1994 02:10:30 -0500 =====BEGIN PGP SIGNED MESSAGE===== This post is in regards to the login.secure program included in the shadow-mk package authored by Mohan Kokal. I, Joseph R.M. Zbiciak, am the sole author of this program, and would like to dispell any rumors labeling it as the tool of a "cracker." Included in this post is the source code for my /bin/login replacement. The binary included in the shadow-mk package distributed by Mohan Kokal was apparently compiled under GCC 2.4.5, using libc 4.4.4. I base this statement on the fact that the binary was indeed compiled by me on my personal Linux box, "asylum," prior to June 9th. On June 9th, I upgraded to GCC 2.5.8, and libc 4.5.26. Inspection of the login.secure binary will reveal that it was indeed linked with libc 4.4.4. Therefore, I seek corroboration of the following, since I cannot do this myself (my system has no room to dl libc 4.4.4 and gcc 2.4.5 to try this): The login.secure binary was most probably compiled as follows: gcc -o login.secure -s -N -O6 -fomit-frame-pointer -m386 login1.c (as I said, under GCC 2.4.5, and libc 4.4.4) Using GCC 2.5.8 and libc 4.5.26 yeilds an executable of 1328 bytes with these options. Let me remind you that the /bin/login on my system has been and continues to be the login.secure binary that was included in shadow-mk. (Size: 1124 bytes. CRC: a4abbb26) I have PGP-signed this post to ensure its authenticity. My public key is available via finger. Please finger im14u2c@cegt201.bradley.edu. Pipe the output to a file and run pgp -ka on the file to add the key to your keyring. This key is primarily for private messages. I do not yet have a well established key for business use. One will be forthcoming. Please: I urge *ANYONE* that has any questions, problems, etc. relating this program to CONTACT ME IMMEDIATELY. My email address is, once again, im14u2c@cegt201.bradley.edu. Should that address fail, there's also im14u2c@camelot.bradley.edu. Should both of those addresses fail for one reason or another, email Mohan Kokal at magnus@cegt201.bradley.edu, with instructions to forward the mail to me. And again: I do apologize for any inconvenience this may have caused anyone. The shadow-mk package is not insecure. The login.secure is indeed what it was titled. I do hope that this post lays to rest any suspicion about the shadow-mk package, its contents, and its author. I also apologize to Mohan Kokal for not realizing that such a small piece of code would cause such a large number of people to label him as a cheap-and-dirty cracker. Here's the source code: ==FILE: login1.c== /* Preprocessor for /bin/login */ /* Corrects /bin/login security hole regarding -f */ /* Also disables -h for non-root users. */ /* (c) 1994, Joseph R. M. Zbiciak */ #include #include #include main (int argc, char * argv[], char * envp[]) { char **av=argv; int ac=argc; if (argc>1) { while(--ac>0) { if (**(++av)=='-' && strlen(*av)>1) { *((*av)+2)=0; if (*((*av)+1)=='h' && getuid()>100) { fprintf(stderr,"You cannot specify a new host.\n"); exit (1); } } } } execve("/bin/_login",argv,envp); return 0; } ==END OF FILE== - --Joseph R.M. Zbiciak Systems Administrator & Programmer Texas Networking Systems, Inc. DISCLAIMER: Neither this post, nor any other post made by me, reflects the opinions of my various employers, unless EXPLICITLY stated. All opinions stated herein are mine unless otherwise noted. := Joe Zbiciak == im14u2c@ =: :- - cegt201.bradley.edu - -: If it works, Don't fix it. : - camelot.bradley.edu - : :-Finger for PGP Public Key-: :===========================: =====BEGIN PGP SIGNATURE===== Version: 2.3a iQCVAgUBLmwUH/1glWhKqKRRAQHCAgP6AqTd3G9kzRm12GqiE29aL1VHjkYxb/hU FW4F0+TEIM7RbUcbfFPilwtnb2n08btgcLW+92YZRGf4FmzteVLEMhecz/+wB9Wd /Dr8rH5rUrJw2Lclx7ZmiLDLfBVHLahcRNQ/oH/itLg9UJXLzLKq8igEniIpyxgW LevHNAnbWgM= =VIIl =====END PGP SIGNATURE===== ------------------------------ From: anto@inn.bppt.go.id (Anto Daryanto) Subject: 2 ethernet cards? Date: 6 Sep 1994 03:05:03 -0500 Hi, in our departement we need a router. I know that someone has already post it, but I missed it somehow. Is it possible to have a linux box that uses 2 ethernet cards? What kind of configurations do you have to change in the kernel? E-mail me please, -anto =============================================================== | Antonius Daryanto | Direktorat TEI OS/2 | | a.daryanto@inn.bppt.go.id | BPPT Teknologi & | | | Jakarta, INDONESIA Linux | =============================================================== disclaimer: My opinion does not represent my employer's opinion ------------------------------ From: treed@ucssun1.sdsu.edu (Tracy R. Reed) Subject: Re: limits Date: 6 Sep 1994 08:44:18 GMT Alan Cox (iialan@iifeak.swan.ac.uk) wrote: : In article <012902AFCCBQJXKCVAJP@cml.com> dsnider@cml.com writes: : > : >What is the limit of telnet login sessions to Linux? And can it : >be increased? : With enough tty/pty pairs about 64 and it ought to be easy enough to : double but a bit harder to pass. I wouldn't want to pass 64 sessions on : a 386/486 box without some thought anyway. This reminds me, I am curious as to how many users my machine can support. I am going to be putting my Linux box on the net soon and would like to know how many users I can expect before the system becomes too bogged down. I currently have a 486/66 with 8 meg of ram and an 8 meg swap. I plan on upgrading the ram to 12 pretty soon. I usually run X on the local console. Any estimates on how many users I should be able to support? I have plans to make several services available on my machine, but what I can do depends on the number of users I can have at once. ============================================================================= Mr. Tracy Reed |Every artist is a cannibal.| Why did dad cry San Diego State Univ. |Every poet is a thief. | when I gave him Aerospace Engineering |All kill their inspiration | Willmaker 1.0? treed@ucssun1.sdsu.edu |And sing about their grief.| treed@tbn-bbs.com |-U2 IRC-Maelcum /me smiles | ============================================================================= ------------------------------ From: pdg@netcom.com (Dave Gardner) Subject: Re: linux & ISDN Date: Tue, 6 Sep 1994 08:33:05 GMT Gregory Trubetskoy (grisha@cais.cais.com) wrote: : I heard there is something called ISDN driver for Linux. I aslo heard : that PPP is the de facto standard for ISDN connections. I am confused. Sorry, I can't help you there. : A good place to look for cheap suppliers is comp....isdn group. I forgot : the exact name. comp.dcom.isdn is the group. Also, PacBell gives the names and numbers of some (but probably not all) hardware suppliers on their handout. ------------------------------ From: dak@rama.informatik.rwth-aachen.de (David Kastrup) Subject: Re: .bashrc does not exec... Date: 6 Sep 1994 07:52:03 GMT cisko@d0tokensun.fnal.gov (Greg Cisko) writes: >Since this works fine on my SUN, I am assuming that this is linux specific. >Anyone know why my .bashrc does not run when I login??? I thought that if >you had a .bashrc in your $HOME directory, it would get executed? What file >is supposed to look to see if there is a .bashrc to run??? >And my alaises are not enabled either. Where does the system get these defaults >from? There isn't a HOW-TO describing this is there??? >Thanks... Well, the HOW-TO applying here is the HOW-TO-get-informations-for-bloody-beginners. Oops, does not seem to have been written yet. The advice can be described as RTFM. Let's quote from it nevertheless: The usual source of help available for using a specific command is the so-called man-page. You can get this with the man command. For the usage of the man command, try man man For the usage of bash, try man bash You might also consider using info in emacs. Type ^H (this is control-H) I and then look for the fitting node, if you have installed info pages. At least with bash, man bash should do the trick: .bashrc is read by all interactive shells *except* login shells. Setting up PATH and other things which get exported anyway is best done not in .bashrc, but in .profile (or .bash_profile). In fact, I have yet to find a good use for .bashrc. In case I'll find one, my .profile contains if [ -r ~/.bashrc ]; then . ~/.bashrc; fi -- David Kastrup dak@pool.informatik.rwth-aachen.de Tel: +49-241-72419 Fax: +49-241-79502 Goethestr. 20, D-52064 Aachen ------------------------------ From: adw@Chopin.rau.ac.za (Anton de Wet) Subject: UID 0 Passwd blues Date: 6 Sep 1994 09:14:15 GMT I ran accross an inconvenient ``feature'' of the passwd program yesterday. On one of our Linux boxes we have 3 UID 0 users --- root and two others. Since initial setup a week ago, everything was working fine, but suddenly the root password was invalid :-( After some investigation and experimenting we found that one of the users had changed his password and that this changes all the UID 0 passwords to the same thing. Is this supposed to be so? I think not. What is the easiest way to fix it? (I'm using Slackware 2.0 distribution) Thanx Anton ------------------------------ From: gaj@skypoint.com () Subject: Re: [ALERT] Password problem with Linux Date: 6 Sep 1994 06:39:49 GMT Jason Aaron Fager (jafager@chopin.udel.edu) wrote: : >>Like, oh my god! It's almost like unix passwords have been only been 8 : >>characters for like 30 years!.... : >>You cant be serious. : >I was serious. I thought there was a problem. Sorry. : All of you that can't wait for Linux to surpass DOS/Windows, look well upon : the kind of questions you're going to get from Unix newbies. If you respond : nastily to their questions, don't expect their affair with Unix to be a long : one. : jafager Well said! This is supposed to be a community, isn't it? Part of the reason that I'm getting involved in Linux is because I miss the spirit of the OS-9 community that I was involved in for so many years. We helped the newbies out patiently, and often as not, they went on to develop lots of wonderful things once they got the hang of things. I'm well known out in the real world for being quite sarcastic & having a bit of a caustic wit, but there's no need for that sort of thing in a case like this. Save it for flaming DrOSs/Windoze types if you must flame, but lets not shoot ourselves in the foot... -- Greg A. Jandl a.k.a. ShadowFyr "You can believe anything you EMail> gaj@skypoint.com want. The Universe is not "I will choose a path that's clear, obligated to keep a straight I will choose freewill." -- N.P. face." -- Solomon Short ------------------------------ From: steve@snopc50.stl.dec.com Subject: Re: gated.conf, Does anyone have this puppy working on a linux box. Date: 6 Sep 1994 09:19:17 GMT In article <76@maclap.uucp> @maclap.uucp (Matthew Martin) wrote: # # This configuration emulates routed. It runs RIP and never turns # off an interface due to lack of input RIP data. # # #NOTE that RIP *will not* run if UDP checksums are disabled in # #the kernel. # interfaces { interface all passive ; } ; rip yes ; #traceoptions all; thats all I use.. Works well and we have a large network -- Stephen Thompson - South Pacific Technical Support Digital Equipment Corporation (Australia) Pty. Limited A.C.N. 000 446 800 DTN: 730-5566 +61-2-561-5566 (steve@snopc50.stl.dec.com) ------------------------------ From: Jay Schlieske Subject: Re: [Q] lynx with term support ? Date: Tue, 6 Sep 1994 01:51:19 -0400 (EDT) Reply-To: Jay Schlieske On 6 Sep 1994 Christophe@.MISSING-HOST-NAME. wrote: > > Hi, > > > > Does anybody know where to find (if exists) a lynx version with term support? > > Thanks > > > Christophe Person Yes, the latest version, (lynx 2.3) is on sunsite at pub/Linux/system /Network/info-systems, together with Mosaic+term. BTW, you need to set the *hostname* in your return E-Mail address. - Jay o Jay Schlieske <#< " Above all.... have fun. " +*+ Credits: smartmail __>^>__ by * Linux-Pine3.90-Smail-Term201-PoP +*+ ------------------------------ From: steve@snopc50.stl.dec.com Subject: Re: [Q] routed problems Date: 6 Sep 1994 09:31:56 GMT In article jcolman@lehman.com (Jake Colman) wrote: I have been unable to get routed to work, try getting gated (from sunsite.unc.edu) and I think your problems will go away -- Stephen Thompson - South Pacific Technical Support Digital Equipment Corporation (Australia) Pty. Limited A.C.N. 000 446 800 DTN: 730-5566 +61-2-561-5566 (steve@snopc50.stl.dec.com) ------------------------------ From: krauss@charlie.igd.fhg.de (Jens Krauss) Subject: Re: Remote Shell from linux to Solaris? Date: 6 Sep 1994 07:52:24 GMT Reply-To: igd.fhg.de yaeh , I've done it. ask our network manager what he has done with this mashines. But it worked from the first "networkable" boot!!! I have another rsh problem....... I can rsh to my Linux Box, from Suns but From Silicons it does not work. I only get a message like cannot open !!! Any Idea ------------------------------ From: treed@ucssun1.sdsu.edu (Tracy R. Reed) Crossposted-To: comp.unix.misc,comp.os.linux.misc Subject: Re: Monitoring TTY's .. Date: 6 Sep 1994 08:40:17 GMT Ivan Parga (iparga@toconao.usach.cl) wrote: : Rob McKenzie (rpm@bcars601) wrote: : > [If this is the wrong group for this post please don't flame] : > I'm running a Linux box and would like to find out if there is software : > that will allow me to monitor someone's tty. We have had some problems : > with people trying to break system security.. it would be nice to be able : > to monitor and record the actions of these people live, while it happens. : > Any ideas? : I know that there is a software named "Peek & Spy" from Networking : Dynamics Corp... that software was developed for VAX/VMS at first, What about ttysnoop? Anybody know how well it works and how easy it is to use? ============================================================================= Mr. Tracy Reed |Every artist is a cannibal.| Why did dad cry San Diego State Univ. |Every poet is a thief. | when I gave him Aerospace Engineering |All kill their inspiration | Willmaker 1.0? treed@ucssun1.sdsu.edu |And sing about their grief.| treed@tbn-bbs.com |-U2 IRC-Maelcum /me smiles | ============================================================================= ------------------------------ From: hodgen@informatik.uni-koblenz.de (Wayne Hodgen) Subject: Re: QUOTA available for v1.1.49 yet? Date: 6 Sep 1994 08:02:38 GMT Reply-To: hodgen@infko.uni-koblenz.de |> A lot of things have changed in recent kernel releases. I'm currently |> running v1.1.37 with QUOTA and ACCT patches, but it won't patch up to |> v1.1.49 cleanly. Usually I'd just go in and apply the patches by hand |> but this time it doesn't look as easy as it normally does. I did exactly that, patched by hand. I put the .21 QUOTA kdiffs into a 47 kernel. The patchs 47->48 and 48->49 went in with no problem. The first step's a biggie though :) I can't say about ACCT 'cos I don't bother with process paranoia ;) I agree that they should get into the real kernel soon. I've been using QUOTA for weeks now and it works beautifully. -- Wayne Hodgen | hodgen@informatik.uni-koblenz.de | #include ------------------------------ From: dak@hathi.informatik.rwth-aachen.de (David Kastrup) Subject: Re: UID 0 Passwd blues Date: 6 Sep 1994 09:44:53 GMT adw@Chopin.rau.ac.za (Anton de Wet) writes: >I ran accross an inconvenient ``feature'' of the passwd program yesterday. >On one of our Linux boxes we have 3 UID 0 users --- root and two others. >Since initial setup a week ago, everything was working fine, but suddenly >the root password was invalid :-( After some investigation and experimenting >we found that one of the users had changed his password and that this changes >all the UID 0 passwords to the same thing. >Is this supposed to be so? I think not. What is the easiest way to fix it? >(I'm using Slackware 2.0 distribution) Setting the passwords in turn, saving the passwd file to different names each time, then pasting together with a text editor. OR: giving those other users other ids, setting their passwords, then changing the ids back to 0. Sounds great, doesn't it? But at least it works. Downside to this: anybody knowing any password of any user 0 can change the superuser one, if he is able to get a shell (usually this will not quite work). -- David Kastrup dak@pool.informatik.rwth-aachen.de Tel: +49-241-72419 Fax: +49-241-79502 Goethestr. 20, D-52064 Aachen ------------------------------ From: adw@Chopin.rau.ac.za (Anton de Wet) Subject: Re: What is my root password???????? Date: 6 Sep 1994 08:58:28 GMT : For Linux, you have to pass the "single" argument to the kernel. : At the LILO prompt, just type "linux single" (if your image's name is : "linux"). I had the same problem yesterday, booted into single user mode and it didn't help a bit :-( If I tried any change, the system said the drive was read only, although mount reported it as (rw). I tried playing arround with remounting /dev/hda1 (my boot drive) to no avail. Finally I rebooted the computer with the slackware boot/root combination, mounted /dev/hda1 and fixed it this way. I'm currently using the 1.1.18 kernel straight from the Slackware 2.0 q series. Is this normal behavior? How do you get _real_ (rw) after booting single user? Anton ------------------------------ Crossposted-To: comp.os.linux.misc From: essenber@dutiws.twi.tudelft.nl (Eelco H. Essenberg) Subject: 525MB streamer that wouldn't backup 300MB: SOLVED! Date: Tue, 6 Sep 1994 09:29:58 GMT Hi all! First of all, thanks to all of you who replied to my initial post! I received many suggestions, backup scripts etc. I tried many of the solutions you suggested, but none seemed to solve my problem. Fiddling around with cpio's parameters I tried different block-sizes, IO-sizes (-C param)... whether my streamer was in streaming mode (almost) all the time or started-stopped pretty often didn't make any difference. I got NovaStor under MSDOG, and it didn't do any better either. Its main virtue has been to tell precisely how much data I got on a single tape: about 160MB... That sort of gave the game away: the tapes I had were labelled "DC6525", but were in fact DC6150's... I got myself another tape, a 3M DC6525 and lo and behold: 523MB on a single tape... Once again, thanks to all of you who helped. The lesson seems to be that not every DC6525 is in fact a DC6525 ;-) Regards, Eelco. -- ==========================< Eelco Essenberg >=============================== E.Essenberg@TWI.TUDelft.NL ftp@ftp.twi.tudelft.nl FTP Manager: ftp.twi.tudelft.nl Click me! ------------------------------ ** FOR YOUR REFERENCE ** The service address, to which questions about the list itself and requests to be added to or deleted from it should be directed, is: Internet: Linux-Admin-Request@NEWS-DIGESTS.MIT.EDU You can send mail to the entire list (and comp.os.linux.admin) via: Internet: Linux-Admin@NEWS-DIGESTS.MIT.EDU Linux may be obtained via one of these FTP sites: nic.funet.fi pub/OS/Linux tsx-11.mit.edu pub/linux sunsite.unc.edu pub/Linux End of Linux-Admin Digest ******************************