networking via cross cable

From: Allan Adler (ara_at_nestle.csail.mit.edu)
Date: 05/30/04

  • Next message: Rene: "Router "SpeedBooster" technology question." 
    Date: 29 May 2004 23:59:26 -0400

    I have two PC's running RedHat 7.2 Linux. Let's call them minsk and pinsk.
    Both have ethernet cards and I have connected them with a cross cable and
    set up eth0 on both. I was able to run ping successfully on each PC to detect
    the other.

    Unfortunately, I can't ftp, scp, telnet, ssh, finger, etc. between them. That
    is probably my own fault since, when I installed RedHat 7.2, I told the
    installation software to set the network security at the highest level.
    I routinely use pinsk on the internet, so I don't want to change its
    security level but I never connect minsk to the internet, so I have no
    problem changing the security levels and facilities on minsk to accomodate
    logins and transfers from pinsk. The cross cable from minsk and pinsk
    will only be plugged in when I'm not using pinsk to connect to the
    internet, so I think that is reasonably safe.

    I don't know how to modify the security on minsk to allow this and
    I don't know how to actually set up these services. I have two books:
    (1) RedHat Linux 9 Unleashed (2) Craig Hunt's book Linux Network Servers.
    I've found (1) particularly helpful but so far I don't feel that either book
    says enough about how to do this for me to figure it out. One other problem
    I have with them is that (1) assumes an earlier version of Linux (RH6)
    and (2) is based on a later version (RH9), whereas I'm running RH7. For
    example, (1) tells me to examine a file named inetd.conf which doesn't
    exist on my system.

    What do I have to do to enable:
    (a) ftp from pinsk to minsk?
    (b) scp requests from pinsk to minsk?
    (c) rlogin or ssh or telnet from pinsk to minsk?

    Should I just reinstall RedHat 7.2 from scratch on minsk and this time
    tell it to set network security at a low or medium level? And if I do,
    is that enough for (a), (b) and (c) to work? Alternatively, I vaguely
    recall that when RedHat installs from the CDROM, it asks what kind of
    installation it will be. I always tell it to make it a workstation,
    but I think telling it to make it a network server is also an option. 

    -- 
Ignorantly,
Allan Adler <ara@zurich.ai.mit.edu>
* Disclaimer: I am a guest and *not* a member of the MIT CSAIL. My actions and
* comments do not reflect in any way on MIT. Also, I am nowhere near Boston.
  • Next message: Rene: "Router "SpeedBooster" technology question."

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