nmap shows port filtered, but iptables/ipchains not running

Discussion in 'Linux Networking' started by Jeff Krimmel, Jun 27, 2004.

  1. Jeff Krimmel

    Jeff Krimmel Guest

    Greetings all,

    I ran an nmap of a machine that I am trying make an NFS server, and the
    results showed that the machine's "priv-term-1", "sunrpc", "nfs" and a
    bunch of "X11" ports are all filtered. The odd thing is that this
    machine's ipchains service is turned off (and, regardless, all of the
    chains are empty).

    How else can ports be filtered in Linux, if the iptables/ipchains service
    is not running?

    Thanks,

    Jeff
     
    Jeff Krimmel, Jun 27, 2004
    #1
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  2. -----BEGIN PGP SIGNED MESSAGE-----
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    You could try using 'rpcinfo/showmount' (man rpcinfo), which is
    suited for this task.
    Perhaps:

    man 5 hosts_access

    --
    Michael Heiming (GPG-Key ID: 0xEDD27B94)
    mail: echo | perl -pe 'y/a-z/n-za-m/'
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    oLNW99tv8kDMjHr/7DsaRcM=
    =epsn
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    Michael Heiming, Jun 27, 2004
    #2
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  3. Jeff Krimmel

    Jeff Krimmel Guest

    Both of these show an RPC error, even though the portmapper is running on
    both machines.
    Thanks, and the /etc/hosts.allow and /etc/hosts.deny files are both set up
    to allow the appropriate connections.

    Any other ideas?

    Jeff
     
    Jeff Krimmel, Jun 27, 2004
    #3
  4. -----BEGIN PGP SIGNED MESSAGE-----
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    Would you mind showing us the exact error message (cut&paste),
    what does happen if you try 'rpcinfo -p localhost' on the nfs
    server?

    --
    Michael Heiming (GPG-Key ID: 0xEDD27B94)
    mail: echo | perl -pe 'y/a-z/n-za-m/'
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    abX3BJ0SlQXFVFY+O/GT14A=
    =2Vke
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    Michael Heiming, Jun 27, 2004
    #4
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