Mikrotik discards packets

RouterOS General
1

Device model - rb4011igs_rm
OS version - 7.18

The mikrotik does not seem to be accepting packets coming for TLS over TCP (RADIUS communicatio) over its WAN port.
The device PCAP shows packet reached here , but device log shows timeout and keeps retrying instead of processing the reject/accept message from server.
”May/01/2025 13:55:04 radius,debug timeout”

Mikrotik → TLC/TCP—> RADIUS server

The response from Radius server is not captured in the device log.

Tried updating the firmware for 7.16 to 7.18
Tried deleting the firewall rules.

Has anyone faced a similar issue.

2

What were your firewall rules? Can you post them here? If you delete these rules, you will not get the result, because without firewall rules the traffic flow will not be correct and the ‘‘default’’ will also be incorrect.
To understand at what stage the problem is, start by defining the firewall rules correctly, their order, etc. Then you will understand at what stage something is wrong… (‘‘default’’ rules will also work)