Update firewall.md

caprover · Aug 24, 2024 · 2cbf816 · 2cbf816
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diff --git a/docs/firewall.md b/docs/firewall.md
@@ -32,3 +32,9 @@ ufw allow 80,443,3000
 
 
 Also, if you are using Port Mapping to allow external connections, for example from your laptop to a MySQL instance on Captain, you will have to add the corresponding port to the exclusion as well.
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+NOTE:
+Docker bypasses ufw for mapped ports. If you have manually added a mapped port for any of your apps deployed under CapRover, ufw does not necessarily block the ports. See the [relevant information here](
+https://askubuntu.com/questions/652556/uncomplicated-firewall-ufw-is-not-blocking-anything-when-using-docker)
+