Hi Alan,

Thank you so much.

when i set one client server to my radius server ,the vpn users work fine. but while there are two client servers ,the second client cant connect the radius server.

radius server : client.conf

--------------

client [vpn1-IP]{

        secret = secret1

        nastype = other

}

client  [vpn2-IP]{

        secret = secret2

        nastype = other

}

-------------

radius.log

-------------

Wed Sep 17 04:07:16 2014 : Info: rlm_sql (sql): Connected new DB handle, #0

Wed Sep 17 04:07:16 2014 : Info: rlm_sql (sql): Attempting to connect rlm_sql_mysql #1

Wed Sep 17 04:07:16 2014 : Info: rlm_sql_mysql: Starting connect to MySQL server for #1

Wed Sep 17 04:07:16 2014 : Info: rlm_sql (sql): Connected new DB handle, #1

Wed Sep 17 04:07:16 2014 : Info: rlm_sql (sql): Attempting to connect rlm_sql_mysql #2

Wed Sep 17 04:07:16 2014 : Info: rlm_sql_mysql: Starting connect to MySQL server for #2

Wed Sep 17 04:07:16 2014 : Info: rlm_sql (sql): Connected new DB handle, #2

Wed Sep 17 04:07:16 2014 : Info: rlm_sql (sql): Attempting to connect rlm_sql_mysql #3

Wed Sep 17 04:07:16 2014 : Info: rlm_sql_mysql: Starting connect to MySQL server for #3

Wed Sep 17 04:07:16 2014 : Info: rlm_sql (sql): Connected new DB handle, #3

Wed Sep 17 04:07:16 2014 : Info: rlm_sql (sql): Attempting to connect rlm_sql_mysql #4

Wed Sep 17 04:07:16 2014 : Info: rlm_sql_mysql: Starting connect to MySQL server for #4

Wed Sep 17 04:07:16 2014 : Info: rlm_sql (sql): Connected new DB handle, #4

Wed Sep 17 04:07:16 2014 : Info: Loaded virtual server <default>

Wed Sep 17 04:07:16 2014 : Info: Loaded virtual server inner-tunnel

Wed Sep 17 04:07:16 2014 : Info:  ... adding new socket proxy address * port 54648

Wed Sep 17 04:07:16 2014 : Info: Ready to process requests.

Wed Sep 17 04:18:23 2014 : Error: Ignoring request to authentication address * port 1812 from unknown client [IP address] port 47118

Wed Sep 17 04:18:33 2014 : Error: Ignoring request to authentication address * port 1812 from unknown client [IP address] port 47118

Wed Sep 17 04:18:43 2014 : Error: Ignoring request to authentication address * port 1812 from unknown client [IP address] port 47118

-------------

the second client server log

-----------

Sep 17 04:18:19 vpn2 pppd[8096]: pppd 2.4.5 started by root, uid 0

Sep 17 04:18:19 vpn2 pppd[8096]: Using interface ppp0

Sep 17 04:18:19 vpn2 pppd[8096]: Connect: ppp0 <--> /dev/pts/1

Sep 17 04:18:53 vpn2 pppd[8096]: rc_ip_hostname: couldn't look up host by addr: %lX

Sep 17 04:18:53 vpn2 pppd[8096]: rc_send_server: no reply from RADIUS server unknown:1812

Sep 17 04:18:53 vpn2 pppd[8096]: Peer vpn2test01 failed CHAP authentication

Sep 17 04:18:53 vpn2 pppd[8096]: Modem hangup

Sep 17 04:18:53 vpn2 pppd[8096]: Connection terminated.

Sep 17 04:18:53 vpn2 pppd[8096]: Exit.

------------------

If there is only vpn1 client, the client server and radius all ok ,while two , the vpn1 still wor fine, but the vpn2 is not.

Why the radius server cant make response to the vpn2 client server?

Thanks.