# Connector: wsrecv: An existing connection was forcibly closed by remote host

- Link: https://www.agilicus.com/faq/connector-wsrecv-an-existing-connection-was-forcibly-closed-by-remote-host/
- Published: 2025-12-15T19:59:02+00:00
- Author: Don Bowman

If you have an outbound firewall which does TLS/SNI inspection, it may be mis-configured
and block connectivity to Agilicus services. You can see the domains required in
[Site Firewall Configuration](https://www.agilicus.com/anyx-guide/site-firewall-configuration/).

You can run the network self test (agilicus-agent test) to check connectivity, it
may show an error as below. This is showing that your site firewall is sending a
TCP RESET (RST) packet when the connector tries to connect to its upstream. Please
update the configuration of your firewall to allow the required domains.

![image](https://www.agilicus.com/www/cbcb0bbe-image-1024x327.png)