Johanns, Gabe wrote:
Hello,

We would like to start to authenticate our internal users for use of
external resources (i.e. internet usage). We are currently running NG
(R55) and using a Win2k box for IAS [RADIUS] authentication of our VPN
users.

Besides building all of our users into SmartConsole to authenticate
against the FW-1 user base is there a way I can make my RADIUS box allow
the internal users out (logging the connection) but not let them VPN in
also?

As I see it, when I add the policy to allow access in IAS it will not
matter from what interface the user hits the CP box from. FW-1/VPN-1
will look to IAS for authentication, IAS will accept the connection as a
valid user, and CP will allow the data through; wither the user is
setting at their machine inside the building or sitting at home with a
rouge VPN connection.

The only solution I can see right now is to implement two separate
RADIUS servers. One to authenticate internal users wishing to access
external resources, and one to authenticate valid external users wishing
to initiate a VPN connection with the network.

Any feedback is, of course, appreciated.

Hi,
if I understand you right, you want to make a difference between users
authenticating in a VPN (incoming) and users to access from the internal
nets to the Internet (outgoing). And, you don't want to put all users
into the user database of NG.
For making a difference between internal users to authenticate and users
of the VPN you declare two groups of Network objects, e.g.

InternalNetworks: New - Group - group of internal nets, InternalNetworks
VPNgroup: New - Group w. exclusion - VPNgroup "any exept InternalNetworks"

Then, you will have do configure two rules with the referring source:

[EMAIL PROTECTED] any anyVPN Services  Authentication ...
and
[EMAIL PROTECTED]  InternalNetworks VPNcommunity  Services
Authentication...

For not all RADIUS users needed to be imported in NG you can use
External User Profiles in the UserManager. The overall joker is a user
profile called "generic*" (Match all users). Here, you give your RADIUS
server in the Tab Authentication and define the rest. Then, you can put
this user profile into a user group, e.g. InternalUsers.
If a user authenticates with a name the Security Server doesn't know, it
will ask the RADIUS server for it.

Hope it helps,
best regards,
Matthias
http://www.fw-1.de
--
AERAsec Network Services and Security GmbH
Wagenberger Strasse 1
D-85662 Hohenbrunn, Germany
http://www.aerasec.de

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