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36 lines
1.1 KiB
Markdown
36 lines
1.1 KiB
Markdown
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# Protecting code-server from bruteforce attempts
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code-server outputs all failed login attempts, along with the IP address,
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provided password, user agent and timestamp by default.
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When using a reverse proxy such as Nginx or Apache, the remote address may
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appear to be `127.0.0.1` or a similar address so `X-Forwarded-For` should be
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used instead. Ensure that you are setting this value in your reverse proxy:
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Nginx:
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```
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location / {
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...
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proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
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...
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}
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```
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Apache:
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```
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<VirtualEnv>
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...
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SetEnvIf X-Forwarded-For "^.*\..*\..*\..*" forwarded
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...
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</VirtualEnv>
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```
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It is extremely important that you ensure that your code-server instance is not
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accessible from the internet (use localhost or block it in your firewall).
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## Fail2Ban
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Fail2Ban allows for automatically banning and logging repeated failed
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authentication attempts for many applications through regex filters. A working
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filter for code-server can be found in `./code-server.fail2ban.conf`. Once this
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is installed and configured correctly, repeated failed login attempts should
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automatically be banned from connecting to your server.
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