Issue Real IPs with varnish

RobertoMa · Feb 12, 2024

I've plesk 18.0.58 u2 on my server centos 7.9.
I installed varnish from docker following the instructions on the Plesk website and it works fine.
I just have one problem. the visitors' IPs are not the real ones but those of varnish.
I tried adding in the nginx directives but it doesn't work:

set_real_ip_from 172.17.0.0/24;
real_ip_header X-Forwarded-For;
real_ip_recursive on;

how can I get the real IPs?

RobertoMa · Feb 13, 2024

The module remoteip di Apache is not present.
How do i install it?

WebHostingAce · Feb 13, 2024

Try,

Code:

sub vcl_recv {
    if (req.http.X-Forwarded-For) {
        set req.http.X-Real-IP = req.http.X-Forwarded-For;
    }
    else {
        set req.http.X-Real-IP = client.ip;
    }
}

In your vanish VCL.

RobertoMa · Feb 14, 2024

WebHostingAce said:

Try,

Code:

sub vcl_recv {
    if (req.http.X-Forwarded-For) {
        set req.http.X-Real-IP = req.http.X-Forwarded-For;
    }
    else {
        set req.http.X-Real-IP = client.ip;
    }
}

In your vanish VCL.

I tried. It don't works.

RobertoMa · Feb 15, 2024

I tried to install the remoteip but when i load it Apache doesn't start.

WebHostingAce · Feb 15, 2024

In where you do not see the real IP? Please post your Varnish VCL.

RobertoMa · Feb 16, 2024

WebHostingAce said:
In where you do not see the real IP? Please post your Varnish VCL.

In Apache. As a result, WordPress and PHPbb do not see the real IP of users. Because of this, some features on my site don't work properly.
my configuration Is nginx -> varnish -> apache.

Il mio file default.vcl è:


/* SET THE HOST AND PORT OF WORDPRESS
* *********************************************************/
vcl 4.0;
import std;

backend default {
.host = "my server ip";
.port = "7080";
.first_byte_timeout = 60s;
.connect_timeout = 300s;
}

# SET THE ALLOWED IP OF PURGE REQUESTS
# ##########################################################
acl purge {
"localhost";
"127.0.0.1";
"my server ip";
}

#THE RECV FUNCTION
# ##########################################################
sub vcl_recv {

# set realIP by trimming CloudFlare IP which will be used for various checks
set req.http.X-Actual-IP = regsub(req.http.X-Forwarded-For, "[, ].*$", "");

# FORWARD THE IP OF THE REQUEST
if (req.restarts == 0) {
if (req.http.x-forwarded-for) {
set req.http.X-Forwarded-For =
req.http.X-Forwarded-For + ", " + client.ip;
} else {
set req.http.X-Forwarded-For = client.ip;
}
}

# Purge request check sections for hash_always_miss, purge and ban
# BLOCK IF NOT IP is not in purge acl
# ##########################################################

# Enable smart refreshing using hash_always_miss
if (req.http.Cache-Control ~ "no-cache") {
if (client.ip ~ purge || std.ip(req.http.X-Actual-IP, "1.2.3.4") ~ purge) {
set req.hash_always_miss = true;
}
}

if (req.method == "PURGE") {
if (!client.ip ~ purge || !std.ip(req.http.X-Actual-IP, "1.2.3.4") ~ purge) {
return(synth(405,"Not allowed."));
}
return (purge);
}

if (req.method == "BAN") {
# Same ACL check as above:
if (!client.ip ~ purge || !std.ip(req.http.X-Actual-IP, "1.2.3.4") ~ purge) {
return(synth(403, "Not allowed."));
}
ban("req.http.host == " + req.http.host +
" && req.url == " + req.url);

# Throw a synthetic page so the
# request won't go to the backend.
return(synth(200, "Ban added"));
}

# Unset cloudflare cookies
# Remove has_js and CloudFlare/Google Analytics __* cookies.
set req.http.Cookie = regsuball(req.http.Cookie, "(^|;\s*)(_[_a-z]+|has_js)=[^;]*", "");
# Remove a ";" prefix, if present.
set req.http.Cookie = regsub(req.http.Cookie, "^;\s*", "");

# For Testing: If you want to test with Varnish passing (not caching) uncomment
# return( pass );

# DO NOT CACHE RSS FEED
if (req.url ~ "/feed(/)?") {
return ( pass );
}

if (req.url ~ "/forum(/)?") {
  return ( pass );
}

if (req.url ~ "/forums(/)?") {
  return ( pass );
}

if (req.url ~ "/login(/)?") {
  return ( pass );
}

if (req.url ~ "/logout(/)?") {
  return ( pass );
}

if (req.url ~ "/contatti(/)?") {
  return ( pass );
}

if (req.url ~ "/lostpassword(/)?") {
  return ( pass );
}

if (req.url ~ "/login-panel(/)?") {
  return ( pass );
}

#Pass wp-cron

if (req.url ~ "wp-cron\.php.*") {
return ( pass );
}

## Do not cache search results, comment these 3 lines if you do want to cache them

if (req.url ~ "/\?s\=") {
return ( pass );
}

# CLEAN UP THE ENCODING HEADER.
# SET TO GZIP, DEFLATE, OR REMOVE ENTIRELY. WITH VARY ACCEPT-ENCODING
# VARNISH WILL CREATE SEPARATE CACHES FOR EACH
# DO NOT ACCEPT-ENCODING IMAGES, ZIPPED FILES, AUDIO, ETC.
# ##########################################################
if (req.http.Accept-Encoding) {
if (req.url ~ "\.(jpg|png|gif|gz|tgz|bz2|tbz|mp3|ogg)$") {
# No point in compressing these
unset req.http.Accept-Encoding;
} elsif (req.http.Accept-Encoding ~ "gzip") {
set req.http.Accept-Encoding = "gzip";
} elsif (req.http.Accept-Encoding ~ "deflate") {
set req.http.Accept-Encoding = "deflate";
} else {
# unknown algorithm
unset req.http.Accept-Encoding;
}
}

# PIPE ALL NON-STANDARD REQUESTS
# ##########################################################
if (req.method != "GET" &&
req.method != "HEAD" &&
req.method != "PUT" &&
req.method != "POST" &&
req.method != "TRACE" &&
req.method != "OPTIONS" &&
req.method != "DELETE") {
return (pipe);
}

# ONLY CACHE GET AND HEAD REQUESTS
# ##########################################################
if (req.method != "GET" && req.method != "HEAD") {
return (pass);
}

# OPTIONAL: DO NOT CACHE LOGGED IN USERS (THIS OCCURS IN FETCH TOO, EITHER
# COMMENT OR UNCOMMENT BOTH
# ##########################################################
if ( req.http.cookie ~ "wordpress_logged_in|resetpass" ) {
return( pass );
}

#fix CloudFlare Mixed Content with Flexible SSL
if (req.http.X-Forwarded-Proto) {
return(hash);
}

# IF THE REQUEST IS NOT FOR A PREVIEW, WP-ADMIN OR WP-LOGIN
# THEN UNSET THE COOKIES
# ##########################################################
if (!(req.url ~ "wp-(login|admin)")
&& !(req.url ~ "&preview=true" )
){
unset req.http.cookie;
}

# IF BASIC AUTH IS ON THEN DO NOT CACHE
# ##########################################################
if (req.http.Authorization || req.http.Cookie) {
return (pass);
}

# IF YOU GET HERE THEN THIS REQUEST SHOULD BE CACHED
# ##########################################################
return (hash);
# This is for phpmyadmin
if (req.http.Host == "pmadomain.com") {
return (pass);
}
}

sub vcl_hash {

if (req.http.X-Forwarded-Proto) {
hash_data(req.http.X-Forwarded-Proto);
}
}


# HIT FUNCTION
# ##########################################################
sub vcl_hit {
return (deliver);
}

# MISS FUNCTION
# ##########################################################
sub vcl_miss {
return (fetch);
}

# FETCH FUNCTION
# ##########################################################
sub vcl_backend_response {
# I SET THE VARY TO ACCEPT-ENCODING, THIS OVERRIDES W3TC
# TENDANCY TO SET VARY USER-AGENT. YOU MAY OR MAY NOT WANT
# TO DO THIS
# ##########################################################
set beresp.http.Vary = "Accept-Encoding";

# IF NOT WP-ADMIN THEN UNSET COOKIES AND SET THE AMOUNT OF
# TIME THIS PAGE WILL STAY CACHED (TTL), add other locations or subdomains you do not want to cache here in case they set cookies
# ##########################################################
if (!(bereq.url ~ "wp-(login|admin)") && !bereq.http.cookie ~ "wordpress_logged_in|resetpass" ) {
unset beresp.http.set-cookie;
set beresp.ttl = 1w;
set beresp.grace =3d;
}

if (beresp.ttl <= 0s ||
beresp.http.Set-Cookie ||
beresp.http.Vary == "*") {
set beresp.ttl = 120 s;
# set beresp.ttl = 120s;
set beresp.uncacheable = true;
return (deliver);
}

return (deliver);
}

# DELIVER FUNCTION
# ##########################################################
sub vcl_deliver {
# IF THIS PAGE IS ALREADY CACHED THEN RETURN A 'HIT' TEXT
# IN THE HEADER (GREAT FOR DEBUGGING)
# ##########################################################
if (obj.hits > 0) {
set resp.http.X-Cache = "HIT";
# IF THIS IS A MISS RETURN THAT IN THE HEADER
# ##########################################################
} else {
set resp.http.X-Cache = "MISS";
}
}

RobertoMa · Feb 16, 2024

i fixed.
I actived the module remoteip and I added in Additional Apache Directives for HTTP:



Header append Vary: X-Forwarded-For

<IfModule mod_remoteip.c>
    RemoteIPInternalProxy 172.17.0.0/24
</IfModule>

Issue Real IPs with varnish

RobertoMa

Basic Pleskian

RobertoMa

Basic Pleskian

WebHostingAce

Silver Pleskian

RobertoMa

Basic Pleskian

RobertoMa

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WebHostingAce

Silver Pleskian

RobertoMa

Basic Pleskian

RobertoMa

Basic Pleskian

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