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I was trying to setup jetty on port 80 but its giving exception saying permission denied as below. I have setup jetty to work with setuid and configured start.ini as follows:

OPTIONS=Server,jsp,jmx,resources,websocket,ext,plus,annotations,jta,jdbc,setuid

(below as first configuration file in start.ini)

etc/jetty-setuid.xml

and jetty-setuid.xml file with username and group name of non root user.

2012-07-03 15:29:02.411:INFO:oejdp.ScanningAppProvider:Deployment monitor /opt/jetty-hightide-8.1.3.v20120416/contexts at interval 1
2012-07-03 15:29:02.454:WARN:oejuc.AbstractLifeCycle:FAILED SelectChannelConnector@0.0.0.0:80: java.net.SocketException: Permission denied
java.net.SocketException: Permission denied
        at sun.nio.ch.Net.bind(Native Method)
        at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:126)
        at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:59)
        at org.eclipse.jetty.server.nio.SelectChannelConnector.open(SelectChannelConnector.java:182)
        at org.eclipse.jetty.server.AbstractConnector.doStart(AbstractConnector.java:311)
        at org.eclipse.jetty.server.nio.SelectChannelConnector.doStart(SelectChannelConnector.java:260)
        at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:59)
        at org.eclipse.jetty.server.Server.doStart(Server.java:273)
        at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:59)
        at org.eclipse.jetty.xml.XmlConfiguration$1.run(XmlConfiguration.java:1215)
        at java.security.AccessController.doPrivileged(Native Method)
        at org.eclipse.jetty.xml.XmlConfiguration.main(XmlConfiguration.java:1138)
2012-07-03 15:29:02.455:WARN:oejuc.AbstractLifeCycle:FAILED org.eclipse.jetty.server.Server@66da9ea4: java.net.SocketException: Permission denied
java.net.SocketException: Permission denied
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1 Answer

Ports below 1024 can only be bound to by the superuser. You can run jetty as superuser (root), or configure it to use a port above 1024 (say, 8080, this is usually done for Java-based app servers). If you want this to be accessible through port 80 at all costs, you can set an Apache server to forward (or "reverse-proxy") requests to Jetty. This is clearly documented here:

http://docs.codehaus.org/display/JETTY/Configuring+mod_proxy

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