jimmy - as bruno said - it's possible :) .
think about it from a routing perspective. know that the crypto happens as the traffic is pushed towards the egress interface (post nat). this is true for routers and firewalls, but on firewall we choose the local address based on routing only, so we usually have no "source address" or looback interface selection commands like we do on the routers (think local-address for the crypto map commands in IOS). SO... you're most likely going to assume it will be sourced using the outside interface IP address. so all you've got to do is add the traffic between ASA1's outside interface IP address to the internal radius server behind ASA2. AND THEN of course you've got to tell your SNMP server that the client is at the public outside interface IP address (for instance 20.20.20.20) and not the private inside one. AND ALSO if you're doing NAT - make sure to exempt the NAT from the SNMP server to the new host address. it's all about the layers baby!!! so it might look something like: !!! ASA1 !!! access-list CRYPTO_ACL extend permit ip host 20.20.20.20 host 192.168.2.10 !!! ASA2 !!! access-list CRYPTO_ACL extend permit ip host 192.168.2.10 host 20.20.20.20 access-list NO_NAT extend permit ip host 192.168.2.10 host 20.20.20.20 and bingo bango (hopefully)... give it a shot and let us know. i'll try to lab it up for you this weekend if i have time. cheers, andrew On Thu, Apr 14, 2011 at 11:36 AM, Jimmy Larsson <[email protected]> wrote: > Hi guys > > I have a question that I have tried to find time to lab out myself without > success so I am throwing it out here in hope for a quick answer. > > Lets say that my ASA1 has a Lan2Lan-tunnel to ASA2. On the inside of ASA2 > is a radius-server and ASA1 needs to authenticate vpn-clients on that radius > server. Can I do that thru the vpn-tunnel? And if so, how do I define the > crypto acl and which interface should I specify in ASA1 that the > radius-server resides on? > > Topology: > > Radius-server .10 on Lan2 192.168.2.0/24 -----(.1) ASA2 =====VPN-tunnel > over internet=====ASA1 .1 --- Lan1 192.168.1.0/24 > > How do I configure aaa-server for radius on ASA1? > > Thanks in advance! > > Best regards > Jimmy Larsson > > > -- > ------- > Jimmy Larsson > Ryavagen 173 > s-26030 Vallakra > Sweden > http://blogg.kvistofta.nu > ------- > > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > >
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