Unable to upgrade enforce, Error 404 when trying to reach enforce:8300

Products

• Data Loss Prevention Enforce

Issue/Introduction

When running the upgrade the upgrade wizard is unreachable on port 8300 error 404 when reaching the upgrade wizard page. 

Cause

port 8300 is being blocked by iptables/firewall

Resolution

%sudo iptables -A INPUT -p tcp --dport 8300 -j ACCEPT
%iptables save
%iptables restart

Rerun the upgrade wizard manually and browse to the upgrade page. 
Once the upgrade is complete you can remove the iptables rule and restart the iptables service.