Step 1. Try pinging the AP from the CentOS box. If that doesn't work, then you definitely have a network problem.
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. 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> 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. Tim From: freeradius-users-bounces+tim.sylvester=networkradius....@lists.freeradius.or g [mailto:freeradius-users-bounces+tim.sylvester=networkradius.com@lists.freer adius.org] On Behalf Of Alejandro Moreno Sent: Sunday, October 02, 2011 3:03 PM To: freeradius-users@lists.freeradius.org Subject: RE: Radius Server Doesn't Communicate AP Ok, first of all, not everybody has the resources to afford an "expert" to do something... 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 anyway...if someone wants to help me...this is what i got my router is a ENHWI-N3, i've got its firewall disabled it's got DHCP server enabled, wan //dinamic ip address Lan// 192.168.0.1 subnet mask 255.255.255.0 i tried to ping Centos ip adress 192.168.75.129 from the AP but is unreachable but when i do the ping to 127.0.0.1 it's alive so the radius server should it be 192.168.75.129 or 127.0.0.1? In clients.conf i have client 192.168.0.1 { secret = xxxx nastype= other } i did a nc -zu 192.168.01 1800 1820 and 1812 its working fine its succeeded and i did it for 127.0.0.1 too and its fine. so..this is it...i appreciate if someone could tell me what could it be wrong..
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