03-06-2010 12:38 AM - edited 03-10-2019 04:59 PM
Hi,
Just need to know if it is possible to use two RADIUS Server in 1 Cisco Router. The first RADIUS Server will authenticate remote users to access our internal LAN while the other RADIUS Server will authenticate users who will access the routers. The reason we can't use the same RADIUS server for authenticating remote users and router users is due to our contract with our supplier (long story!).
Anyways, if it is possible, could someone help me how to do this or give me the link of the documentation.
Thanks
Solved! Go to Solution.
03-08-2010 04:47 PM
Yes this is the way to do it. You will have to user two different methods as well.
radius-server 1.1.1.1 key login
radius-server 2.2.2.2 key login
radius server 3.3.3.3 key remote
radius server 4.4.4.4 key remote
aaa-server group telnet protocol radius
server 1.1.1.1
server 2.2.2.2
aaa-server group remoteaccess protocol radius
server 3.3.3.3
server 4.4.4.4
aaa authentication login default group remoteaccess
aaa authentication login TEL group telnet
line vty 0 4
login authentication TEL
line con 0
loging authentication TEL
This is an example that will allow your telnet access to the router to use one server group
while allowing your remote access users to use the other radius servers.
--Jesse
03-06-2010 12:53 AM
Hi,
We cannot use both radius server's at a time.
we can configure two or more radius server in cisco routers/switches, but only one radius server will be active at a time.
If any authentication is coming from the client to router, it will forward to the primary radius server, if primary server not availbale then it will forward the request to secondary radius server.
But for your request we can give work around that,
1.Configure one radius server for routers authentication users and make another one for remote users.
2.Configure Database forwarding in first radius server saying that, if the requested user information is not available in local database, then forward that request to another radius server.
3.If the request is coming from remote users, the request will reach the router and it will forward to first radius server.By any how, that user information won't be available in fisrt radius server,obviusly it will forward to another radius server and authentication will happen for the respective remote users.
regard
karuppu
03-08-2010 09:01 AM
Can't we create 2 different server groups with each RADIUS server belonging to respective group?
While configuring AAA authentication use specific server group.
03-08-2010 04:47 PM
Yes this is the way to do it. You will have to user two different methods as well.
radius-server 1.1.1.1 key login
radius-server 2.2.2.2 key login
radius server 3.3.3.3 key remote
radius server 4.4.4.4 key remote
aaa-server group telnet protocol radius
server 1.1.1.1
server 2.2.2.2
aaa-server group remoteaccess protocol radius
server 3.3.3.3
server 4.4.4.4
aaa authentication login default group remoteaccess
aaa authentication login TEL group telnet
line vty 0 4
login authentication TEL
line con 0
loging authentication TEL
This is an example that will allow your telnet access to the router to use one server group
while allowing your remote access users to use the other radius servers.
--Jesse
03-09-2010 01:11 AM
Thanks for the tip guys. I'll try this one.
05-04-2010 07:52 AM
Thanks for the help jesse, the one you suggested worked. Thanks also to other guys who replied..
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