unusual packet (tcpdump shows): rad-#0 41 [id 0] Attr[

From: Melt Man (ran_mobbyat_private)
Date: Fri Oct 18 2002 - 06:31:15 PDT

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    Dear sir.
    
    I'm facing this packets continuously on my server.
    Can someone please explain me what these packets r and for what 
    they r used?
    is this possibly a DDOS attack??
    
    the sample tcpdump output is:
    
    20:32:22.658735 200.213.38.137.1812 > XX.XX.XX.XX.1812:  rad-#0 41 
    [id 0] Attr[  Term_action Term_action Term_action Term_ac
    tion Term_action Term_action Term_action Term_action Term_action 
    Term_action Term_action
    
    second time tcpdump
    
    20:39:57.168735 202.30.10.188.1812 > XX.XX.XX.XX.1812:  rad-#0 41 
    [id 0] Attr[  Term_action
    
    
    
    This Line Term_action goes on till infinity (or may b till run out 
    of buffers)
    
    Means these packets are coming from a different different Ip 
    addresses ...
    
    I'm not running anything on 1812 port (neither udp or tcp)
    Does above packet mean another protocol than udp/tcp ??
    
    can someone please explain me the above problem ...
    
    i'm getting worried about the traffic coming to my servers ....
    
    Thanking you,
    Mobby
    
    
    
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