Nxfilter p2p11/13/2023 Instead, they may return the mac address or no accounting packet at all so knowing the capabilities of your NAS devices before you start is very important.ĪD is covered pretty well for FreeRADIUS. An even bigger issue is that some NAS's (access points usually) don't return the IP address at all. The accounting-start packet is delayed slightly and that's the initial communication from the NAS after successful authentication that contains the IP address and username of the client that we send on to NxFilter. You're right about the radius accounting delay. I think I had to install libUntil you can test a socket and get it working like you want, this solution with LWP and HTTP is working for now. I don't believe LWP is a standard perl module in the base Ubuntu install. I see there's LDAP module for FreeRADIUS but I am not so sure if it's working for AD or it's the best way for AD integration. We also need to think about Active Directory integration through FreeRADIUS. Before NxFilter creates a login session, a user will appear with the name of your default user and will be under the policy of the default user. My suggestion is to create a default user which associates whole local network IP range. But the problem is that how do we allow a user to use the Internet before NxFilter creates a login session for him/her. So there's some delay for a user to login. These client IPs come from Accounting Request from AP. AP doesn't send client IP with its login request to FreeRADIUS. Accroding to Rob, it doesn't work right away after a user login. But I need to test all these things first with my new router.Īnd there's one thing for people trying to implement SSO with FreeRADIUS by Rob's original posting. Just a character string separated by spaces. People asking about it when they implement SSO with NxFilter. I didn't think about Logout but it's better to have it I guess. Then we don't need LWP and those JSP pages. We can use a TCP socket to NxFilter directly. Is LWP a default module for Perl these days? I was thinking of removing the dependency on it. I was thinking of simplifying the process. This is just a general order of operations for a working FreeRADIUS configuration and an ongoing discussion so feel free to add input, ask questions, or point out things missing or that could be improved. Start FreeRADIUS in debug mode: freeradius -X 2>&1 | tee debug.log and then log in your working client like usual and watch the debug output for "perl: xxxxx" messages when Accounting-Request packets are received from the NAS. L_DBG_ERR_REQ => 20, # Less severe error only displayed when debugging is enabled L_DBG_WARN_REQ => 19, # Less severe warning only displayed when debugging is enabled L_DBG_ERR => 18, # Error only displayed when debugging is enabled L_DBG_WARN => 17, # Warning only displayed when debugging is enabled L_DBG => 16, # Only displayed when debugging is enabled RLM_MODULE_NUMCODES => 9 # How many return codes there are RLM_MODULE_UPDATED => 8, # OK (pairs modified) RLM_MODULE_NOOP => 7, # module succeeded without doing anything RLM_MODULE_NOTFOUND => 6, # user not found RLM_MODULE_USERLOCK => 5, # reject the request (user is locked out) RLM_MODULE_INVALID => 4, # the module considers the request invalid RLM_MODULE_HANDLED => 3, # the module handled the request, so stop RLM_MODULE_OK => 2, # the module is OK, continue RLM_MODULE_REJECT => 0, # immediately reject the request Our (%RAD_REQUEST, %RAD_REPLY, %RAD_CHECK, %RAD_STATE) The code below is from the file /etc/freeradius/3.0/mods-config/perl/ that I've modified on my test Ubuntu 18.04.2 server. The first step is to edit the example perl file provided by your working FreeRADIUS configuration. The NxFilter documentation here provides examples of how to use JSP pages for creating a login session with the HTTP protocol and we'll use the rlm_perl module of FreeRADIUS to send the accounting information returned from the NAS on to NxFilter. Once a user is successfully authenticated by FreeRADIUS, passing the username and IP address to NxFilter for SSO can be done with FreeRADIUS and perl. but this post is about how to leverage an already working FreeRADIUS configuration to achieve Single Sign On(SSO) with NxFilter. There are numerous guides on how to configure FreeRADIUS for authentication/authorization/accounting with Active Directory, LDAP, PAM, etc.
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