legacyip-warn/README.md

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# LegacyIP Warn
Fork from: [https://gitlab.com/margau_me/legacyip-warn](https://gitlab.com/margau_me/legacyip-warn)
This project allows you to inject an warning banner for IPv4-users with a NGINX webserver.
It consists of two snippets and an example vhost configuration.
Blog Post: [https://margau.net/posts/2020-09-06-legacyip-warn/](https://margau.net/posts/2020-09-06-legacyip-warn/)
# Install
`mkdir /etc/nginx/snippets`
copy `legacy-banner.conf` to `/etc/nginx/snippets/legacy-banner.conf`
copy `legacy-js.conf` to `/etc/nginx/snippets/legacy-js.conf`
Add the script to the site config like this:
geo $ipv4 {
0.0.0.0/0 ipv4;
}
server {
#Listen SSL+HTTP/2
listen 443 ssl http2;
listen [::]:443 ssl http2;
#Server Name here
include /etc/nginx/snippets/legacy-js.conf;
location / {
#normal location or proxy settings
# IP Legacy Banner
include /etc/nginx/snippets/legacy-banner.conf;
if ($ipv4 ~ "^$") {
set $legacy "<!-- uses IPv6 --></body>";
}
sub_filter "script-src 'unsafe-inline' 'unsafe-inline'" "script-src 'unsafe-inline'";
sub_filter "</body>" $legacy;
}
}