pfSense

Running a Netgate APU2 with SSD and 4GB RAM. This started after upgrading from 2.3 to 2.4. After a few days, would try to login to the web gui and would get no response. Terminal access through console cable, screen and putty no response, SSH the same. Thought there was a hidden issue with the upgrade, so downloaded the memstick installer for 2.4.0. Wiped and reinstalled, same issue. Updated to 2.4.1 from console the day it was released, the issue appeared again today.

From webgui: 502 bad gateway|nginx
SSH from LAN: I am asked for password and then get this prompt: PC Engines APU2 -
Terminal from console cable: FreeBSD/amd64 (hostname) (ttyu0) | PC Engines APU2 -

Eventually this will crash the box. Cycle power, services come back and operate normally. Have tried different browser combinations thinking it was hanging on a specific browser request - that does not seem to be the case.

Other installed packages: NMAP, pfBlockerNG and Snort.