I'm trying to build a VPN PoC solution for my employer using Sophos UTM (the latest production version, currently v9.006-5). So far, I'm quite excited about Sophos UTM, but before we go and buy it, the PoC must be 100% working.
This is what I need to achieve:
- L2TP/IPsec VPN access (+ some other remote access protocols supported by Sophos UTM, but L2TP/IPsec is an essential requirement)
- Users stored in Active Directory (AD)
- Firewall rules based on a custom user list
- Firewall rules based on a User Group / AD Group Membership
This is what I've successfully done so far, i.e. working for me without any problems:
- L2TP/IPsec VPN with RADIUS authentication:
- Microsoft NPS Server as a Radius server
- NPS server is an AD member server
- only members of AD Group "VPNTestUsers" are allowed to use VPN
- Microsoft NPS Server as a Radius server
- Different firewall rules applied to different users:
- UTM configured to prefetch members of AD Group "VPNTestUsers" from AD
- Prefetched user used in the "Sources" field for the firewall rule
- A list of prefetched users used in the "Sources" field for the firewall rule
So that's the part I'm quite excited about, it's working, everything is OK.
Now, here comes the problem, the part which is not working:
- Firewall does not match the rule if Sources is a User Group (group type: Static members), which contains prefetched users (but it matches the rule if the same users are in Sources as a separate list of users)
- Firewall does not match the rule if Sources is a User Group (group type: Backend membership, Backend: AD), which contains the same users that are being prefetched by UTM (but it matches the rule if the same users are in Sources as a separate list of users)
I might be doing something wrong here. Maybe I've missed something and I'm approaching it from a bad angle, I don't know. I'm kind of stuck now.
- Could you please point out what I am doing wrong?
- Is there a better way to get this PoC working based on the requirements mentioned above?
Thank you for any help or advice.
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