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-rw-r--r--docs/content/doc/usage/fail2ban-setup.en-us.md9
1 files changed, 9 insertions, 0 deletions
diff --git a/docs/content/doc/usage/fail2ban-setup.en-us.md b/docs/content/doc/usage/fail2ban-setup.en-us.md
index f96cf889a3..0821b23a9f 100644
--- a/docs/content/doc/usage/fail2ban-setup.en-us.md
+++ b/docs/content/doc/usage/fail2ban-setup.en-us.md
@@ -108,3 +108,12 @@ this to your Nginx configuration so that IPs don't show up as 127.0.0.1:
```
proxy_set_header X-Real-IP $remote_addr;
```
+
+The security options in `app.ini` need to be adjusted to allow the interpretation of the headers
+as well as the list of IP addresses and networks that describe trusted proxy servers
+(See the [configuration cheat sheet](https://docs.gitea.io/en-us/config-cheat-sheet/#security-security) for more information).
+
+```
+REVERSE_PROXY_LIMIT = 1
+REVERSE_PROXY_TRUSTED_PROXIES = 127.0.0.1/8 ; 172.17.0.0/16 for the docker default network
+```