nginx does not respect server_name Announcing the arrival of Valued Associate #679: Cesar...

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nginx does not respect server_name



Announcing the arrival of Valued Associate #679: Cesar Manara
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I have two virtual hosts on my nginx server with their respective domain name. One is http only because it’s a static site (siteA), the other is https only (siteB). For siteB I have a permanent redirection from the http access to the https access.



The config for siteA is



server {
listen 80;
listen [::]:80;
server_name siteA.example.com;
...
location / {
...
}
}


The config for siteB is



server {
listen 80;
listen [::]:80;
server_name siteB.example.com;
location / {
return 301 https://$server_name$request_uri;
}
}

server {
listen 443 ssl;
listen [::]:443 ssl;
server_name siteB.example.com;
...
location / {
...
}
}


The problem is that when I access https://siteA.example.com I get back https://siteB.example.com. How may I avoid this ? 



Do I have to use listen siteB.example.com:443 ssl; instead of simply listen 443 ssl; ?



I expected that server_name specifies the server name to match for the HOST value in the HTTP request.










share|improve this question





























    0















    I have two virtual hosts on my nginx server with their respective domain name. One is http only because it’s a static site (siteA), the other is https only (siteB). For siteB I have a permanent redirection from the http access to the https access.



    The config for siteA is



    server {
    listen 80;
    listen [::]:80;
    server_name siteA.example.com;
    ...
    location / {
    ...
    }
    }


    The config for siteB is



    server {
    listen 80;
    listen [::]:80;
    server_name siteB.example.com;
    location / {
    return 301 https://$server_name$request_uri;
    }
    }

    server {
    listen 443 ssl;
    listen [::]:443 ssl;
    server_name siteB.example.com;
    ...
    location / {
    ...
    }
    }


    The problem is that when I access https://siteA.example.com I get back https://siteB.example.com. How may I avoid this ? 



    Do I have to use listen siteB.example.com:443 ssl; instead of simply listen 443 ssl; ?



    I expected that server_name specifies the server name to match for the HOST value in the HTTP request.










    share|improve this question

























      0












      0








      0








      I have two virtual hosts on my nginx server with their respective domain name. One is http only because it’s a static site (siteA), the other is https only (siteB). For siteB I have a permanent redirection from the http access to the https access.



      The config for siteA is



      server {
      listen 80;
      listen [::]:80;
      server_name siteA.example.com;
      ...
      location / {
      ...
      }
      }


      The config for siteB is



      server {
      listen 80;
      listen [::]:80;
      server_name siteB.example.com;
      location / {
      return 301 https://$server_name$request_uri;
      }
      }

      server {
      listen 443 ssl;
      listen [::]:443 ssl;
      server_name siteB.example.com;
      ...
      location / {
      ...
      }
      }


      The problem is that when I access https://siteA.example.com I get back https://siteB.example.com. How may I avoid this ? 



      Do I have to use listen siteB.example.com:443 ssl; instead of simply listen 443 ssl; ?



      I expected that server_name specifies the server name to match for the HOST value in the HTTP request.










      share|improve this question














      I have two virtual hosts on my nginx server with their respective domain name. One is http only because it’s a static site (siteA), the other is https only (siteB). For siteB I have a permanent redirection from the http access to the https access.



      The config for siteA is



      server {
      listen 80;
      listen [::]:80;
      server_name siteA.example.com;
      ...
      location / {
      ...
      }
      }


      The config for siteB is



      server {
      listen 80;
      listen [::]:80;
      server_name siteB.example.com;
      location / {
      return 301 https://$server_name$request_uri;
      }
      }

      server {
      listen 443 ssl;
      listen [::]:443 ssl;
      server_name siteB.example.com;
      ...
      location / {
      ...
      }
      }


      The problem is that when I access https://siteA.example.com I get back https://siteB.example.com. How may I avoid this ? 



      Do I have to use listen siteB.example.com:443 ssl; instead of simply listen 443 ssl; ?



      I expected that server_name specifies the server name to match for the HOST value in the HTTP request.







      nginx






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked 18 hours ago









      chmikechmike

      128117




      128117






















          1 Answer
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          0














          Your case is one, where a Host header is sent, that matches none of the server_name directives in the configuration.



          Nginx (as well as Apache) will resolve this by answering the request in the context of the default_server item which if not given is chosen from the first virtual host read.



          If you have different IP addresses for the hosts, you can just chose to filter the listen directive, but if you share IPs the canonical way is to create a dedicated default_server item with a rewrite rule that will always return a "Host not found" page and a HTTP error, often 404.






          share|improve this answer
























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            1 Answer
            1






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            0














            Your case is one, where a Host header is sent, that matches none of the server_name directives in the configuration.



            Nginx (as well as Apache) will resolve this by answering the request in the context of the default_server item which if not given is chosen from the first virtual host read.



            If you have different IP addresses for the hosts, you can just chose to filter the listen directive, but if you share IPs the canonical way is to create a dedicated default_server item with a rewrite rule that will always return a "Host not found" page and a HTTP error, often 404.






            share|improve this answer




























              0














              Your case is one, where a Host header is sent, that matches none of the server_name directives in the configuration.



              Nginx (as well as Apache) will resolve this by answering the request in the context of the default_server item which if not given is chosen from the first virtual host read.



              If you have different IP addresses for the hosts, you can just chose to filter the listen directive, but if you share IPs the canonical way is to create a dedicated default_server item with a rewrite rule that will always return a "Host not found" page and a HTTP error, often 404.






              share|improve this answer


























                0












                0








                0







                Your case is one, where a Host header is sent, that matches none of the server_name directives in the configuration.



                Nginx (as well as Apache) will resolve this by answering the request in the context of the default_server item which if not given is chosen from the first virtual host read.



                If you have different IP addresses for the hosts, you can just chose to filter the listen directive, but if you share IPs the canonical way is to create a dedicated default_server item with a rewrite rule that will always return a "Host not found" page and a HTTP error, often 404.






                share|improve this answer













                Your case is one, where a Host header is sent, that matches none of the server_name directives in the configuration.



                Nginx (as well as Apache) will resolve this by answering the request in the context of the default_server item which if not given is chosen from the first virtual host read.



                If you have different IP addresses for the hosts, you can just chose to filter the listen directive, but if you share IPs the canonical way is to create a dedicated default_server item with a rewrite rule that will always return a "Host not found" page and a HTTP error, often 404.







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered 18 hours ago









                Eugen RieckEugen Rieck

                11.3k22429




                11.3k22429






























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