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List:       freeradius-users
Subject:    anti-spoofing  (VERY URGENT !!!)
From:       "freeradius" <freeradius () urnet ! gr>
Date:       2003-02-27 19:22:42
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Dear all

We have a MAX TNT nas and now we have problems with spoofed icmp-echo and echo-reply \
packages. To sole the problem we must enable the Ascend-Source-IP-Check VSA reply for \
users authenticated from free radius. So I modified the clints.conf file to :


client A.B.C.D {
     secret = somesecret
     shortname = max
     Ascend-Source-IP-Check[96]=1
}

After change radius does not complains about the new line but in debug output \
(radiusd -x -x) i cant see anything about this durring user authentication.

Is my radius propertly configuerd to send  Ascend-Source-IP-Check ?
If yes how I can verify ?
If no how I can send this VSA from freeradius ?
Please not that we have cisco boxes also as clients of free radius.
How I can enable anti-spoofing for cisco dial-up users ?

Thanks

A. Lykiardopoulos


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<DIV><FONT face=Arial size=2>Dear all</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT>&nbsp;</DIV>
<DIV><FONT face=Arial size=2>We have a MAX TNT nas and now we have problems with 
spoofed icmp-echo and echo-reply packages.</FONT></DIV>
<DIV><FONT face=Arial size=2>To sole the problem we must enable the 
Ascend-Source-IP-Check VSA reply for users authenticated from free 
radius.</FONT></DIV>
<DIV><FONT face=Arial size=2>So I modified the clints.conf file to 
:</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT>&nbsp;</DIV>
<DIV><FONT face=Arial size=2></FONT>&nbsp;</DIV>
<DIV><FONT face=Arial size=2>client A.B.C.D {</FONT></DIV>
<DIV><FONT face=Arial size=2>&nbsp;&nbsp;&nbsp;&nbsp; secret = 
somesecret</FONT></DIV>
<DIV><FONT face=Arial size=2>&nbsp;&nbsp;&nbsp;&nbsp; shortname = 
max</FONT></DIV>
<DIV><FONT face=Arial size=2>&nbsp;&nbsp;&nbsp;&nbsp; 
Ascend-Source-IP-Check[96]=1</FONT></DIV>
<DIV><FONT face=Arial size=2>}</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT>&nbsp;</DIV>
<DIV><FONT face=Arial size=2>After change radius does not complains about the 
new line but in debug output (radiusd -x -x) i cant see anything about this 
durring user authentication.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT>&nbsp;</DIV>
<DIV><FONT face=Arial size=2>Is my radius propertly configuerd to send&nbsp; 
Ascend-Source-IP-Check ?</FONT></DIV>
<DIV><FONT face=Arial size=2>If yes how I can verify ?</FONT></DIV>
<DIV><FONT face=Arial size=2>If no how I can send this VSA from freeradius 
?</FONT></DIV>
<DIV><FONT face=Arial size=2>Please not that&nbsp;we have cisco boxes also as 
clients of free radius.</FONT></DIV>
<DIV><FONT face=Arial size=2>How I can enable anti-spoofing for cisco dial-up 
users ?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT>&nbsp;</DIV>
<DIV><FONT face=Arial size=2>Thanks</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT>&nbsp;</DIV>
<DIV><FONT face=Arial size=2>A. Lykiardopoulos</FONT></DIV></BODY></HTML>


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