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  • Run tomcat on port 80 not 8080

    How to run Tomcat on Port 80

    A standard Tomcat installation starts the webserver on port 8080 – which is usually not the desired behavior. In order to change the server to port 80 there are two options which I outline in the following:

    Recommended: redirect traffic to 8080

    Tomcat continues to listen on port 8080 (and 8443 for https). The traffic is redirected by iptables.
    You don’t need to change anything in Tomcat itself, just add according Iptables-Forwarding rules. Actually this looks more complicated than the alternative – but it is the more secure way and you do not need to touch Tomcat’s config.

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    # check that rules are not there already
    sudo iptables -L -n -t nat
     
    # Add rules
    sudo iptables -t nat -I PREROUTING -p tcp --dport 80  -j REDIRECT --to-port 8080
    sudo iptables -t nat -I PREROUTING -p tcp --dport 443 -j REDIRECT --to-port 8443
     
    # Check
    sudo iptables -L -n -t nat
     
    # Save
    sudo /service iptables save
     
    # Restart iptables
    sudo /etc/init.diptables restart
     
    # final check
    sudo iptables -L -n -t nat

    Option2: run Tomcat directly on port 80

    This configures to run Tomcat directly on port 80. As this is a priviledged port, Tomcat must run as root – this is usually not recommended.
    The advantage: It’s simple!
    The disadvantage: A webserver shouldn’t run as root.If you want to do this nevertheless, edit /etc/tomcat7/server.xml and change the connector port from 8080 to just 80:

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    <Connector port="<del>80</del>80"  
       protocol="HTTP/1.1"
       connectionTimeout="20000"
       redirectPort="8443" />

    Now edit /etc/tomcat7/tomcat7.conf and set the tomcat user to root:

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    TOMCAT_USER="root"

    And restart Tomcat:

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    sudo service tomcat7 restart

    REF:

    https://www.locked.de/how-to-run-tomcat-on-port-80/

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  • 原文地址:https://www.cnblogs.com/emanlee/p/10086946.html
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