# Connectivity Issues Connectivity issues are often caused by incorrectly configured firewalls. In the example below **client1** is making a SSH connection to **server1**. For this connection **server1** must allow ssh traffic from the IP address of **client1**. This connection will also require that **pritunl-link** accept ssh traffic from **client1**. The ssh connection going to **server1** will still be detected as ingress traffic to **pritunl-link** requiring that both **pritunl-link** and **server1** allow the traffic from **client1**. To avoid this typically **pritunl-link** should accept all traffic from the VPC network with **client1**. (client1 ssh client) -> (pritunl-link) -> (server1 ssh server) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.pritunl.com/kb/vpn/link/link-connectivity-issues.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.