Cisco ISE - RADIUS Authentication
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12-13-2024 04:12 AM
Hi All,
I am currently testing (ISE 3.3 patch 4) behind F5 load balancer and able to successfully authenticate TACACS request. Although when I am trying to authenticate endpoints for RADIUS, receiving getting below logs. Currently in the production environment (ISE 2.7) is running smoothly. Should I need to check and specific thing to get this RADIUS authentication issue sorted ?
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Identity Services Engine (ISE)
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12-13-2024 04:32 AM
I will send you some points to check
Thanks for waiting
MHM
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05-15-2025 02:14 PM
Hello MHM,
Could you also send me the points to check?
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12-13-2024 05:06 AM
How is your ISE deployment? It is one box or multiple box?
If multiple, you may face issue when the F5 load balance the traffic and send the traffic to a new box and not the one that started the process with the end point device.
If that is the case, you need check NAT config on the LB and you may need Virtual server for IP Forwarding
On this link below you will find all the information you need.
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05-15-2025 02:13 PM
Did you find a solution to this?
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05-20-2025 02:52 AM
Yes sorted out the issue as it was certificate related. Enabled EAP authentication on the certificate and it worked.
