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Updated documentation.

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doc/snac.8
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@ -242,6 +242,12 @@ posts will not be direct ones, but proxied by
This way, remote media servers will not see the user's IP, but the server one,
improving privacy. Please take note that this will increase the server's incoming
and outgoing traffic.
.It Ic badlogin_retries
If incorrect logins from a given IP address reach this count, subsequent attempts
from it are rejected until the lock expires (default: 5 retries).
.It Ic badlogin_expire
The number of seconds a blocked IP address is ignored in login attempts
(default: 300 seconds).
.El
.Pp
You must restart the server to make effective these changes.
@ -546,6 +552,22 @@ heavily on how all the servers involved behave. Just cross your fingers and hope
Full instances can be blocked. This operation must be done from
the command-line tool. See
.Xr snac 1 .
.Pp
.Ss Bad login throttling
Since version 2.67, a simple logic to avoid brute force attacks against user passwords
has been implemented: if, from a given IP address, the number of failed logins reaches
a given threshold, further tries from that IP address are never successful until a timer
expires. The maximum number of retries can be configured in the
.Pa server.json
file by setting the
.Ic badlogin_retries
variable, and the number of seconds the IP address unlock timer expires, in
.Ic badlogin_expire .
Please take note that, for this system to work, you must setup your web server proxy
to pass the remote connection address in the
.Ic X-Forwarded-For
HTTP header (unless you use the FastCGI interface; if that's the case, you don't have
to do anything).
.Sh ENVIRONMENT
.Bl -tag -width Ds
.It Ev DEBUG
@ -603,35 +625,42 @@ example.com server section:
location /fedi {
proxy_pass http://localhost:8001;
proxy_set_header Host $http_host;
proxy_set_header X-Forwarded-For $remote_addr;
}
# webfinger
location /.well-known/webfinger {
proxy_pass http://localhost:8001;
proxy_set_header Host $http_host;
proxy_set_header X-Forwarded-For $remote_addr;
}
# Mastodon API (entry points)
location /api/v1/ {
proxy_pass http://localhost:8001;
proxy_set_header Host $http_host;
proxy_set_header X-Forwarded-For $remote_addr;
}
location /api/v2/ {
proxy_pass http://localhost:8001;
proxy_set_header Host $http_host;
proxy_set_header X-Forwarded-For $remote_addr;
}
# Mastodon API (OAuth support)
location /oauth {
proxy_pass http://localhost:8001;
proxy_set_header Host $http_host;
proxy_set_header X-Forwarded-For $remote_addr;
}
# optional
location /.well-known/nodeinfo {
proxy_pass http://localhost:8001;
proxy_set_header Host $http_host;
proxy_set_header X-Forwarded-For $remote_addr;
}
# optional (needed by some Mastodon API clients)
location /.well-known/host-meta {
proxy_pass http://localhost:8001;
proxy_set_header Host $http_host;
proxy_set_header X-Forwarded-For $remote_addr;
}
.Ed
.Pp