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+---
+title: Stalled SSH connections
+summary: >
+ My firewall removed valid connections obviosly.
+ This is how I solved it.
+date: 2024-10-06T19:30:17+02:00
+# lastmod: 2024-08-18T14:20:52+0000
+categories:
+ - computerstuff
+tags:
+ - networking
+ - pfSense
+ - openssh
+ - selfhost
+---
+
+I spent some time adjusting my SSH configuration because I often get stalled
+connections to my servers but I never got that fixed until recently, when I
+started looking in my firewall settings on the pfSense.
+
+After changing the Firewall Optimization Settings within
+System → Advanced → Firewall & NAT to
+Conservative I had no more of these hangs of my SSH sessions.
+
+I use the `ControlMaster` setting in my SSH configuration so the stalled
+connections have to be killed with something like
+
+```console
+$ ssh -O exit {short hostname}
+```
+
+every time -- which is annoying.