rpc broadcasts

Pavel Urban <[email protected]>
Newsgroups gmane.comp.security.sun
Message-ID <[email protected]>
Hello,

we're seeing traffic like this on our firewall:

00:00:00.557313 10.0.0.64.39735 > 10.0.0.255.7938:  udp 128
00:00:00.557603 10.0.0.64.39735 > 10.0.0.255.111:  udp 128
00:00:03.591934 10.0.0.64.39735 > 10.0.0.255.7938:  udp 128
00:00:03.592010 10.0.0.64.39735 > 10.0.0.255.111:  udp 128
02:00:00.144020 10.0.0.64.39754 > 10.0.0.255.7938:  udp 128
02:00:00.144310 10.0.0.64.39754 > 10.0.0.255.111:  udp 128
02:00:03.159034 10.0.0.64.39754 > 10.0.0.255.7938:  udp 128
02:00:03.159110 10.0.0.64.39754 > 10.0.0.255.111:  udp 128
04:00:00.150855 10.0.0.64.39755 > 10.0.0.255.7938:  udp 128
04:00:00.150932 10.0.0.64.39755 > 10.0.0.255.111:  udp 128
04:00:03.157447 10.0.0.64.39755 > 10.0.0.255.7938:  udp 128
04:00:03.157523 10.0.0.64.39755 > 10.0.0.255.111:  udp 128

I assume that these broadcasts are somehow related to Solstice Backup 
server that is running on this machine. But why broadcasts?

root@backup # rpcinfo -p
    program vers proto   port  service
     100000    4   tcp    111  rpcbind
     100000    3   tcp    111  rpcbind
     100000    2   tcp    111  rpcbind
     100000    4   udp    111  rpcbind
     100000    3   udp    111  rpcbind
     100000    2   udp    111  rpcbind
     100024    1   udp  32772  status
     100024    1   tcp  32771  status
     100133    1   udp  32772
     100133    1   tcp  32771
     100083    1   tcp  32772
     100021    1   udp   4045  nlockmgr
     100021    2   udp   4045  nlockmgr
     100021    3   udp   4045  nlockmgr
     100021    4   udp   4045  nlockmgr
     100021    1   tcp   4045  nlockmgr
     100021    2   tcp   4045  nlockmgr
     100021    3   tcp   4045  nlockmgr
     100021    4   tcp   4045  nlockmgr
     100249    1   udp  32774
     100249    1   tcp  32788
     300598    1   udp  32777
     300598    1   tcp  32790
  805306368    1   udp  32777
  805306368    1   tcp  32790
     390113    1   tcp   7937  nsrexec
     390103    2   tcp   8054  nsrd
     390109    2   tcp   8054  nsrstat
     390110    1   tcp   8054  nsrjb
     390103    2   udp   8055  nsrd
     390109    2   udp   8055  nsrstat
     390110    1   udp   8055  nsrjb
     390107    5   tcp   8003  nsrmmdbd
     390107    6   tcp   8003  nsrmmdbd
     390105    5   tcp   8052  nsrindexd
     390105    6   tcp   8052  nsrindexd
     390104  105   tcp   8024  nsrmmd
     390104  505   tcp   8073  nsrmmd
     390104  905   tcp   8013  nsrmmd
     390104 1305   tcp   8070  nsrmmd


-- 
***********************************************************************
Pavel Urban ([email protected])
IOL system disaster
Internet OnLine, www.iol.cz
***********************************************************************
    Vegetables should not operate electronic equipment.
           Computer Stupidities, http://rinkworks.com/stupid/
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