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Mark_Papworth
Explorer

RADIUS Authentication over Site-to-Site VPN

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I have set up a Radius Server to authenticate remote-access VPN clients. The Radius server is located at a remote site connected via Site-to-Site VPN on the same gateway the clients connect to.

Authentication fails because the request to the Radius server does not go through the VPN tunnel. Logs show traffic is accepted by an implied rule and consequently not encrypted.

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PhoneBoy
Admin
Admin
You need to disable the implied rule for RADIUS.
You can do that by editing the appropriate implied_rules.def, ensuring explicit rules exist for RADIUS where needed and installing policy.
Refer to: https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solut...

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PhoneBoy
Admin
Admin
You need to disable the implied rule for RADIUS.
You can do that by editing the appropriate implied_rules.def, ensuring explicit rules exist for RADIUS where needed and installing policy.
Refer to: https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solut...

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Mark_Papworth
Explorer
Thanks. I couldn't figure out where to disable the implied rule.
We've established communication with the Radius server now.
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Thomas_Eichelbu
Collaborator

Hello, 

i have a question to this ...
when you have the firewall doing RADIUS over VPN, what is your source IP? is it the Firewalls external IP?
is it possible to set a specific outgoing IP address? So the closest IP pointing to the destination in easy words.
In a scenario of many many firewalls and NPS servers i want to limit the amount of IP address i have to set on NPS as NAS IP.

is there a way?

best regards

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PhoneBoy
Admin
Admin

It should always use the "nearest" IP to the destination (according to the routing table). 

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