Bonjour,
Jâai du rĂ©installer mon instance sur une nouvelle VM, tout en gardant une configuration trĂšs proche de lâancienne. Et je nâarrive pas Ă comprendre pourquoi jâai ce message dâerreur qui sâaffice :
La configuration des entĂȘtes du reverse proxy est incorrecte. Câest un problĂšme de sĂ©curitĂ©, qui peut permettre Ă un attaquant dâusurper lâadresse IP affichĂ©e Ă Nextcloud. Pour plus dâinformation, voir la documentation 
.
Voici ma config nginx sur mon reverse proxy (qui nâest pas sur la mĂȘme machine) :
server {
server_name cloud.domain.com;
listen 80;
listen [::]:80;
location ^~ /.well-known/acme-challenge {
alias /var/www/html/cloud.domain.com/.well-know;
#proxy_pass http://cloud.domain.com/;
}
location / {
return 301 https://$host$request_uri;
}
}
server {
server_name cloud.domain.com;
listen 443 ssl http2;
listen [::]:443 ssl http2;
location / {
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_set_header X-Forwarded-Host $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_pass https://cloud.domain.com;
add_header Strict-Transport-Security "max-age=31536000; includeSubDomains; preload";
client_max_body_size 0;
access_log /var/log/nginx/nextcloud.access.log;
error_log /var/log/nginx/nextcloud.error.log;
}
location /.well-known/carddav {
return 301 $scheme://$host/remote.php/dav;
}
location /.well-known/caldav {
return 301 $scheme://$host/remote.php/dav;
}
ssl_certificate /etc/letsencrypt/live/cloud.domain.com/fullchain.pem; # managed by Certbot
ssl_certificate_key /etc/letsencrypt/live/cloud.domain.com/privkey.pem; # managed by Certbot
ssl_trusted_certificate /etc/letsencrypt/live/cloud.domain.com/chain.pem;
include /etc/nginx/snippets/header.conf;
include /etc/nginx/snippets/ssl.conf;
access_log /var/log/nginx/cloud.domain.com.access.log;
error_log /var/log/nginx/cloud.domain.com.error.log;
}
La config du nginx sur la VM de lâinstance :
upstream php-handler {
server unix:/run/php/php8.2-fpm.sock;
}
# Set the `immutable` cache control options only for assets with a cache busting `v` argument
map $arg_v $asset_immutable {
"" "";
default ", immutable";
}
server {
listen 80;
listen [::]:80;
server_name cloud.domain.com;
real_ip_header X-Forwarded-For;
set_real_ip_from 10.0.0.0/8;
# Prevent nginx HTTP Server Detection
server_tokens off;
# Enforce HTTPS
return 301 https://$server_name$request_uri;
}
server {
listen 443 ssl http2;
listen [::]:443 ssl http2;
server_name cloud.domain.com;
# Path to the root of your installation
root /var/www/nextcloud;
real_ip_header X-Forwarded-For;
set_real_ip_from 10.0.0.0/8;
# Use Mozilla's guidelines for SSL/TLS settings
# https://mozilla.github.io/server-side-tls/ssl-config-generator/
ssl_certificate /etc/ssl/certs/cloud.domain.com/fullchain.pem;
ssl_certificate_key /etc/ssl/private/cloud.domain.com/privkey.pem;
# Prevent nginx HTTP Server Detection
server_tokens off;
# HSTS settings
# WARNING: Only add the preload option once you read about
# the consequences in https://hstspreload.org/. This option
# will add the domain to a hardcoded list that is shipped
# in all major browsers and getting removed from this list
# could take several months.
add_header Strict-Transport-Security "max-age=15768000; includeSubDomains; preload" always;
# set max upload size and increase upload timeout:
client_max_body_size 512M;
client_body_timeout 300s;
fastcgi_buffers 64 4K;
# Enable gzip but do not remove ETag headers
gzip on;
gzip_vary on;
gzip_comp_level 4;
gzip_min_length 256;
gzip_proxied expired no-cache no-store private no_last_modified no_etag auth;
gzip_types application/atom+xml text/javascript application/javascript application/json application/ld+json application/manifest+json application/rss+xml application/vnd.geo+json application/vnd.ms-fontobject application/wasm application/x-font-ttf application/x-web-app-manifest+json application/xhtml+xml application/xml font/opentype image/bmp image/svg+xml image/x-icon text/cache-manifest text/css text/plain text/vcard text/vnd.rim.location.xloc text/vtt text/x-component text/x-cross-domain-policy;
# Pagespeed is not supported by Nextcloud, so if your server is built
# with the `ngx_pagespeed` module, uncomment this line to disable it.
#pagespeed off;
# The settings allows you to optimize the HTTP2 bandwidth.
# See https://blog.cloudflare.com/delivering-http-2-upload-speed-improvements/
# for tuning hints
client_body_buffer_size 512k;
# HTTP response headers borrowed from Nextcloud `.htaccess`
add_header Referrer-Policy "no-referrer" always;
add_header X-Content-Type-Options "nosniff" always;
add_header X-Frame-Options "SAMEORIGIN" always;
add_header X-Permitted-Cross-Domain-Policies "none" always;
add_header X-Robots-Tag "noindex, nofollow" always;
add_header X-XSS-Protection "1; mode=block" always;
# Remove X-Powered-By, which is an information leak
fastcgi_hide_header X-Powered-By;
# Set .mjs and .wasm MIME types
# Either include it in the default mime.types list
# and include that list explicitly or add the file extension
# only for Nextcloud like below:
include mime.types;
types {
text/javascript mjs;
application/wasm wasm;
}
# Specify how to handle directories -- specifying `/index.php$request_uri`
# here as the fallback means that Nginx always exhibits the desired behaviour
# when a client requests a path that corresponds to a directory that exists
# on the server. In particular, if that directory contains an index.php file,
# that file is correctly served; if it doesn't, then the request is passed to
# the front-end controller. This consistent behaviour means that we don't need
# to specify custom rules for certain paths (e.g. images and other assets,
# `/updater`, `/ocs-provider`), and thus
# `try_files $uri $uri/ /index.php$request_uri`
# always provides the desired behaviour.
index index.php index.html /index.php$request_uri;
# Rule borrowed from `.htaccess` to handle Microsoft DAV clients
location = / {
if ( $http_user_agent ~ ^DavClnt ) {
return 302 /remote.php/webdav/$is_args$args;
}
}
location = /robots.txt {
allow all;
log_not_found off;
access_log off;
}
# Make a regex exception for `/.well-known` so that clients can still
# access it despite the existence of the regex rule
# `location ~ /(\.|autotest|...)` which would otherwise handle requests
# for `/.well-known`.
location ^~ /.well-known {
# The rules in this block are an adaptation of the rules
# in `.htaccess` that concern `/.well-known`.
location = /.well-known/carddav { return 301 /remote.php/dav/; }
location = /.well-known/caldav { return 301 /remote.php/dav/; }
location /.well-known/acme-challenge { try_files $uri $uri/ =404; }
location /.well-known/pki-validation { try_files $uri $uri/ =404; }
# Let Nextcloud's API for `/.well-known` URIs handle all other
# requests by passing them to the front-end controller.
return 301 /index.php$request_uri;
}
# Rules borrowed from `.htaccess` to hide certain paths from clients
location ~ ^/(?:build|tests|config|lib|3rdparty|templates|data)(?:$|/) { return 404; }
location ~ ^/(?:\.|autotest|occ|issue|indie|db_|console) { return 404; }
# Ensure this block, which passes PHP files to the PHP process, is above the blocks
# which handle static assets (as seen below). If this block is not declared first,
# then Nginx will encounter an infinite rewriting loop when it prepends `/index.php`
# to the URI, resulting in a HTTP 500 error response.
location ~ \.php(?:$|/) {
# Required for legacy support
rewrite ^/(?!index|remote|public|cron|core\/ajax\/update|status|ocs\/v[12]|updater\/.+|ocs-provider\/.+|.+\/richdocumentscode(_arm64)?\/proxy) /index.php$request_uri;
fastcgi_split_path_info ^(.+?\.php)(/.*)$;
set $path_info $fastcgi_path_info;
try_files $fastcgi_script_name =404;
include fastcgi_params;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
fastcgi_param PATH_INFO $path_info;
fastcgi_param HTTPS on;
fastcgi_param modHeadersAvailable true; # Avoid sending the security headers twice
fastcgi_param front_controller_active true; # Enable pretty urls
fastcgi_pass php-handler;
fastcgi_intercept_errors on;
fastcgi_request_buffering off;
fastcgi_max_temp_file_size 0;
}
# Serve static files
location ~ \.(?:css|js|mjs|svg|gif|ico|jpg|png|webp|wasm|tflite|map|ogg|flac)$ {
try_files $uri /index.php$request_uri;
# HTTP response headers borrowed from Nextcloud `.htaccess`
add_header Cache-Control "public, max-age=15778463$asset_immutable";
add_header Referrer-Policy "no-referrer" always;
add_header X-Content-Type-Options "nosniff" always;
add_header X-Frame-Options "SAMEORIGIN" always;
add_header X-Permitted-Cross-Domain-Policies "none" always;
add_header X-Robots-Tag "noindex, nofollow" always;
add_header X-XSS-Protection "1; mode=block" always;
access_log off; # Optional: Don't log access to assets
}
location ~ \.woff2?$ {
try_files $uri /index.php$request_uri;
expires 7d; # Cache-Control policy borrowed from `.htaccess`
access_log off; # Optional: Don't log access to assets
}
# Rule borrowed from `.htaccess`
location /remote {
return 301 /remote.php$request_uri;
}
location / {
try_files $uri $uri/ /index.php$request_uri;
}
}
Et enfin mon fichier config.php :
<?php
$CONFIG = array (
'instanceid' => 'xxxxxx',
'passwordsalt' => 'xxxxx',
'secret' => 'xxxxxxxxx',
'trusted_domains' =>
array (
0 => 'cloud.domain.com',
1 => 'rp.otherdomain.com',
2 => '10.0.0.3',
),
'overwritehost' => 'rp.otherdomain.com',
'overwriteprotocol' => 'https',
'overwritewebroot' => '',
'overwritecondaddr' => '^10\\.0\\.0\\.3$',
'overwrite.cli.url' => 'https://cloud.domain.com/',
'datadirectory' => '/var/nc_datas',
'dbtype' => 'mysql',
'version' => '29.0.5.1',
'dbname' => 'nextcloud_db',
'dbhost' => 'localhost',
'dbport' => '',
'dbtableprefix' => 'oc_',
'mysql.utf8mb4' => true,
'dbuser' => 'nextcloud',
'dbpassword' => 'xxxxxxx',
'installed' => true,
'maintenance_window_start' => 1,
'filelocking.enabled' => 'true',
'memcache.local' => '\\OC\\Memcache\\APCu',
'memcache.distributed' => '\\OC\\Memcache\\Redis',
'memcache.locking' => '\\OC\\Memcache\\Redis',
'redis' =>
array (
'host' => 'localhost',
'port' => 6379,
'timeout' => 0.0,
'password' => 'xxxxxxxxxx',
),
'default_phone_region' => 'FR',
'mail_smtpmode' => 'smtp',
'mail_sendmailmode' => 'smtp',
'mail_from_address' => 'admin',
'mail_domain' => 'otherdomain.com',
'mail_smtphost' => 'mail.otherdomain.com',
'mail_smtpport' => '587',
'mail_smtpauth' => 1,
'mail_smtpname' => 'admin@otherdomain.com',
'mail_smtppassword' => 'xxxxxxxxxxx',
'log_type' => 'file',
'loglevel' => 2,
'logfile' => '/var/nc_datas/nextcloud.log',
'log_rotate_size' => 1048576,
'log_type_audit' => 'file',
'logfile_audit' => '/var/nc_datas/audit.log',
'maintenance' => false,
'ldapProviderFactory' => 'OCA\\User_LDAP\\LDAPProviderFactory',
'twofactor_enforced' => 'true',
'twofactor_enforced_groups' =>
array (
0 => 'admin',
),
'twofactor_enforced_excluded_groups' =>
array (
),
'theme' => '',
'mail_smtpsecure' => 'ssl',
);
Auriez-vous une idĂ©e de ce qui peut poser problĂšme ? Jâai revu la doc et je pense avoir mis les bonnes variables.
Merci beaucoup
par ici Ă eu le mĂȘme cas afin de partager une solution Ă ceci ?
!
