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I currently deployed freeradius and radtest looks good for local host but when I sent Access-Request from external server, FreeRadius server doesn't reply. see below output of radsniff

[root@pgw-radius tmp]# radsniff -i ens192
2023-03-18 17:29:17.588990 (1) Access-Request Id 91 ens192:10.0.34.13:48791 -> 10.0.33.108:1812 +0.000
2023-03-18 17:29:22.788990 (1) ** norsp ** Access-Request Id 91 ens192:10.0.34.13:48791 -> 10.0.33.108:1812
2023-03-18 17:29:52.771149 (2) Access-Request Id 51 ens192:10.0.34.13:48799 -> 10.0.33.108:1812 +35.182
2023-03-18 17:29:52.865949 (3) Access-Request Id 92 ens192:10.0.34.13:48791 -> 10.0.33.108:1812 +35.276
2023-03-18 17:29:57.971149 (2) ** norsp ** Access-Request Id 51 ens192:10.0.34.13:48799 -> 10.0.33.108:1812
2023-03-18 17:29:58.659490 (3) ** norsp ** Access-Request Id 92 ens192:10.0.34.13:48791 -> 10.0.33.108:1812

Debug Results

Listening on auth address * port 1812 bound to server default
Listening on acct address * port 1813 bound to server default
Listening on auth address :: port 1812 bound to server default
Listening on acct address :: port 1813 bound to server default
Listening on auth address 127.0.0.1 port 18120 bound to server inner-tunnel
Listening on proxy address * port 43265
Listening on proxy address :: port 40852
Ready to process requests
Ignoring request to auth address * port 1812 bound to server default from unknown client 10.0.34.13 port 48791 proto udp
Ready to process requests
Ignoring request to auth address * port 1812 bound to server default from unknown client 10.0.34.13 port 48791 proto udp
Ready to process requests
Ignoring request to auth address * port 1812 bound to server default from unknown client 10.0.34.13 port 48791 proto udp
Ready to process requests
Ignoring request to auth address * port 1812 bound to server default from unknown client 10.0.34.13 port 48799 proto udp
Ready to process requests
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  • Have you check if a firewall rules are blocking incomign traffic to port 1812
    – Saxtheowl
    Mar 18, 2023 at 17:41
  • Did you add your client's ip/network address to clients.conf? Does the secret match?
    – Tomek
    Mar 18, 2023 at 22:32
  • Yes, they match, the secrets are same , I also changed this line in the clients.conf file # not be used in any real environment. # secret = kjhefoihjeqwrfiuh # # Old-style clients do not send a Message-Authenticator
    – Oye
    Mar 19, 2023 at 15:35

2 Answers 2

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There is a couple of things you can do, first check if port 1812 is not blocked by something, also your Freeradius could be misconfigured, check the config files /etc/raddb/clients.conf and /etc/raddb/users be sure that the external server is allowed to send Acces-Request packets and the auth method is configured as you want

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Thanks guys, the issue was on the /etc/raddb/users "Authorize" file, the Server is responding with Access-reject now, the next steps is to check the Authentication and encryption type.

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