Re: [LUNI] Security issues without firewall

From: Erik Jarvi (ejarvi@megsinet.net)
Date: Thu Mar 08 2001 - 21:29:02 CST

  • Next message: Erik Jarvi: "Re: [LUNI] Off topic....kinda sorta"

    On Thu, Mar 08, 2001 at 04:50:35PM -0800, chamster wrote:
    >
    > On Thu, 8 Mar 2001, A.Khan wrote:
    > > FWIW, Samba can be configured to serve only on specific interface(s) such as
    > > 'eth0'. Assuming eth0 is the internal interface of the File-Print
    > > Server/NAT/Proxy box. As others have suggested also block the relevant ports
    > > on 'ppp0' for additional insurance.
    >
    > This is surprisingly undocumented in many Samba guides that you see on the
    > Net or in books. I wasn't aware of it until I happened to read about it in
    > a Debian mailing list a while back. I tried to find something similar with
    > Netatalk and squid. It would make me more comfortable to tell my LAN
    > services to say "ignore this interface to the outside world" than to
    > say "only allow these IP addresses to connect."

    My /etc/atalk/atalkd.conf

    # Format of lines in this file:
    #
    # interface [ -seed ] [ -phase { 1 | 2 } ] [ -addr net.node ]
    # [ -net first[-last] ] [ -zone ZoneName ] ...
    #
    # -seed only works if you have multi-interfaces. Any missing arguments are
    # automatically configured from the network. Note: lines can't actually be
    # split, tho it's a good idea.
    #
    # Some examples:
    #
    # The simplest case is no atalkd.conf. This works on most platforms
    # (notably not Solaris), since atalkd can discover the local interfaces
    # on the machine.
    #
    # Very slightly more complicated:
    #
    # le0
    # or
    # eth0
    #
    # for Solaris/SunOS or Linux.
    #
    # A much more complicated example:
    #
    # le0 -phase 1
    # le1 -seed -phase 2 -addr 66.6 -net 66-67 -zone "No Parking"
    #
    # This turns on transition routing between the le0 and le1
    # interfaces on a Sun. It also causes atalkd to fail if other
    # routers disagree about it's configuration of le1.
    #
    eth0 -phase 2 -net 0-65534 -addr 65280.242

    -- 
    All music aspires to the condition of muzak.
    -=-
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