Sophos APX320X keeps restarting, cannot register in Sophos Central

Question

Hello, 
 my APX320X keep rebooting, after start it is getting IP from DHCP (separate DHCP server controller ) After that I'm able to ping the AP IP for 20 seconds, Led status is blinking red 
 after that it goes unreachable and this scenario continue, Led status all 3 leds turn on for a few seconds 
 Tried to reset the AP (Hold 8 sec) and factory reset (20 sec) but same scenario, the AP keeps resetting. 
 In between AP and UTM, there is switch only, rule allows full internet access. 
 Product: SG 320 v9.706-9 
 I have a ticket open more than 1 month, they sent me a second hardware with the same fault. 
 Now I need the AP, but I have no answer from technical help desk in the last 7 days. 
 
 Kind regards

Tejas Kashyap · Answer

Hello, 
 APX 320X is currently supported only through Sophos Central. There is a known issue if there is a Sophos firewall between the access point and Central with wireless functionality enabled. This is documented here: https://support.sophos.com/support/s/article/KB-000039886?language=en_US 
 Do let me know if this helps. 
 Regards, 
 Tejas

Gioceroni · Answer

I probably found some error/bug, and a solution. 
 The solution is to connect the AP to a home Internet router with no filters to Internet. The AP then registers correcly to Internet. 
 In our settings we have Sophos firewall with an allow all rule. Somehow there is something that makes the AP to reset and not register, we should investigate how this strange bug behaves 1) in the AP 2) what is the anomaly on the firewall that bothers the AP. 
 In any case, after the first Sophos Central registration, the Allow all policy on the firewall allows the Sophos APX320X to work normally. 
 Regards

BrucekConvergent · Answer

Just a FYI, I have seen this before (long time reseller / var) -- if the UTM has Wireless Protection enabled, it can cause this by intercepting the provisioning traffic of the AP. If Wireless Protection is enabled, give that a look.

Sophos APX320X keeps restarting, cannot register in Sophos Central

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