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-rw-r--r--docs/reference/plugins/validation/http/selfhosting.md7
1 files changed, 6 insertions, 1 deletions
diff --git a/docs/reference/plugins/validation/http/selfhosting.md b/docs/reference/plugins/validation/http/selfhosting.md
index 649c248..6ce5081 100644
--- a/docs/reference/plugins/validation/http/selfhosting.md
+++ b/docs/reference/plugins/validation/http/selfhosting.md
@@ -10,5 +10,10 @@ Not all software supports this port sharing feature though. If you get errors
telling you that the listener cannot be started, please look for another
validation method.
+## Non-default port
+Even though Let's Encrypt will always send validation requests to port 80,
+you may internally proxy, NAT or redirect that to another port. Using the
+`--validationport` switch you can tell the plugin to listen to a specific port.
+
## Unattended
-`[--validation selfhosting]` \ No newline at end of file
+`[--validation selfhosting] [--validationport 8080]` \ No newline at end of file