diff --git a/docs/getting-started/troubleshooting.md b/docs/getting-started/troubleshooting.md
index 48cdb40e8..5933ea97a 100644
--- a/docs/getting-started/troubleshooting.md
+++ b/docs/getting-started/troubleshooting.md
@@ -174,3 +174,22 @@ echo vm.swappiness = 10 | sudo tee -a /etc/sysctl.conf
 ```
 
 ***
+
+__Symptom:__ I successfully deployed my application with no deployment errors but I'm receiving Connection Timeout when attempting to access the application.
+
+__Solution:__
+
+This can occur if Dokku is running on a system with a firewall like ufw enabled (some OS versions like Ubuntu 16.04 have this enabled by default). You can check if this is your case by running the following script:
+
+```shell
+sudo ufw status
+```
+
+If the previous script returned `Status: active` and a list of ports, ufw is enabled and is probably the cause of the symptom described above. To disable it, run:
+
+```shell
+sudo ufw disable
+```
+
+***
+