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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal style='margin-left:.25in'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Step 1. Try pinging the AP from the CentOS box. If that doesn’t work, then you definitely have a network problem.<o:p></o:p></span></p><p class=MsoNormal style='margin-left:.25in'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Step 2. Disable the firewall on the CentOS box (/etc/init.d/iptables stop). Then try pinging the CentOS box from the AP and then pinging the AP from the CentOS box. If that works, then try RADIUS from the AP again.<o:p></o:p></span></p><p class=MsoNormal style='margin-left:.25in'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Step 3. If ping works but RADIUS doesn’t then run tcpdump on the CentOS box to see if AP is sending RADIUS packets to the CentOS box. # tcpdump host <IP address of the AP><o:p></o:p></span></p><p class=MsoNormal style='margin-left:.25in'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal style='margin-left:.25in'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Try these three things. If you still have problems, then send the results of these tests to the list. My guess is that the firewall is running on the CentOS box. The default configuration for CentOS and RHEL is to have the firewall enabled and blocking RADIUS – UDP ports 1812-1813.<o:p></o:p></span></p><p class=MsoNormal style='margin-left:.25in'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal style='margin-left:.25in'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Tim<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div style='border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt'><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> freeradius-users-bounces+tim.sylvester=networkradius.com@lists.freeradius.org [mailto:freeradius-users-bounces+tim.sylvester=networkradius.com@lists.freeradius.org] <b>On Behalf Of </b>Alejandro Moreno<br><b>Sent:</b> Sunday, October 02, 2011 3:03 PM<br><b>To:</b> freeradius-users@lists.freeradius.org<br><b>Subject:</b> RE: Radius Server Doesn't Communicate AP<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Ok, first of all, not everybody has the resources to afford an "expert" to do something...<br>besides, this is a university project, is not something that im doing for a company or something, hence im not getting an expert...thats the reason im in a forum, this is what they are for...otherwise i would have got an expert and not posting in forums<br><br>anyway...if someone wants to help me...this is what i got<br><br>my router is a ENHWI-N3, i've got its firewall disabled<br>it's got DHCP server enabled, wan //dinamic ip address<br>Lan// 192.168.0.1 subnet mask 255.255.255.0<br>i tried to ping Centos ip adress 192.168.75.129 from the AP but is unreachable<br>but when i do the ping to 127.0.0.1 it's alive<br>so the radius server should it be 192.168.75.129 or 127.0.0.1?<br><br>In clients.conf i have<br><br>client 192.168.0.1 {<br><br>secret = xxxx<br>nastype= other <br>}<br><br><br>i did a nc -zu 192.168.01 1800 1820 and 1812 its working fine its succeeded <br>and i did it for 127.0.0.1 too and its fine.<br><br>so..this is it...i appreciate if someone could tell me what could it be wrong..<o:p></o:p></span></p></div></div></div></body></html>