Re: absurdly simple LAN problem

From: Anthony Campbell (ac_at_acampbell.org.uk)
Date: 09/15/05

  • Next message: Oliver Lupton: "Re: lock ssh user in his home" 
    Date: Thu, 15 Sep 2005 17:22:33 +0100
To: debian-user@lists.debian.org

    On 15 Sep 2005, Alvin Oga wrote:
    >
    >
    > On Thu, 15 Sep 2005, Anthony Campbell wrote:
    >
    > > > > firewall (shorewall) does not help.
    >
    > ping localhost is 100% guaranteed to work ... as long as 127.0.0.1 is in
    > /etc/hosts and you do use /etc/hosts in your /etc/resolv.conf
    >
    > - ping of it's own ip# will always work evenwith the ethernet
    > cable disconnected
    >
    > what is your contents of /etc/hosts and /etc/resolv.conf
    >

    desktop:

    /etc/hosts:

    127.0.0.1 localhost loopback
    192.168.0.20 arcadia.acampbell.org.uk arcadia arcadia.acupuncturecourse.org.uk accampbell.uklinux.net

    192.168.0.22 thinkpad ibm

    # The following lines are desirable for IPv6 capable hosts
    # (added automatically by netbase upgrade)

    ::1 ip6-localhost ip6-loopback
    fe00::0 ip6-localnet
    ff00::0 ip6-mcastprefix
    ff02::1 ip6-allnodes
    ff02::2 ip6-allrouters
    ff02::3 ip6-allhosts

    /etc/resolv.conf

    search
    nameserver 80.84.64.20
    nameserver 80.84.72.20

    laptop:

    /etc/resolv.conf

    search acampbell.org.uk
    nameserver 80.84.64.20
    nameserver 80.84.72.20

    /etc/hosts

    127.0.0.1 localhost.localdomain localhost
    192.168.0.22 ibm.acampbell.org.uk ibm thinkpad
    192.168.0.20 arcadia

    # The following lines are desirable for IPv6 capable hosts
    ::1 ip6-localhost ip6-loopback
    fe00::0 ip6-localnet
    ff00::0 ip6-mcastprefix
    ff02::1 ip6-allnodes
    ff02::2 ip6-allrouters
    ff02::3 ip6-allhosts

    >
    > > ac:~:$ route -n
    > > Kernel IP routing table
    > > Destination Gateway Genmask Flags Metric Ref Use Iface
    > > 192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
    > > 0.0.0.0 192.168.0.1 0.0.0.0 UG 0 0 0 eth0
    >
    > 192.168.0.1 is presumably your router thru which you expect to get out
    >
    > > ifconfig -a:
    > >
    > > eth0 Link encap:Ethernet HWaddr 00:0B:2B:02:32:FB
    > > inet addr:192.168.0.20 Bcast:192.168.0.255 Mask:255.255.255.0
    >
    > good ... your ip# is *.20
    >
    > > For laptop:
    > >
    > > Destination Gateway Genmask Flags Metric Ref Use Iface
    > > 192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
    > > 0.0.0.0 192.168.0.1 0.0.0.0 UG 0 0 0 eth1
    >
    > good ... your gateway is the same *.1
    >
    > > ac:/usr/share/doc/shorewall:$ ifconfig -a
    > > eth0 Link encap:Ethernet HWaddr 00:06:1B:DE:4B:CF
    >
    > bad .. this does NOT have an ip# assigned to it ...
    > ===================================================
    >
    > > eth1 Link encap:Ethernet HWaddr 00:40:96:44:B5:A6
    > > inet addr:192.168.0.22 Bcast:192.168.0.255 Mask:255.255.255.0
    >
    > good ... this is *.22
    >
    > > wifi0 Link encap:UNSPEC HWaddr 00-40-96-44-B5-A6-00-00-00-00-00-00-00-00-00-00
    > > BROADCAST MULTICAST MTU:2312 Metric:1
    >
    > bad ... this does NOT have an ip# assigned to it
    > /////////////////////////////////////////////////
    >

    How can I correct these? 

    -- 
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