So you have changed the port on which Tomcat is served within the server.xml to port 80. Now you restart Tomcat which gives you the following catalina.out error:
SEVERE: java.net.BindException: Permission denied<null>:80 -
After quite a lot of ‘Googling’ the fix was actually quite straight forward.
Simply edit the tomcat7 config file located in /etc/default/tomcat7:
vim /etc/default/tomcat7
Uncommend ‘AUTHBIND=no’ and change to AUTHBIND=yes.
e.g.
# If you run Tomcat on port numbers that are all higher than 1023, then you # do not need authbind. It is used for binding Tomcat to lower port numbers. # NOTE: authbind works only with IPv4. Do not enable it when using IPv6. # (yes/no, default: no) AUTHBIND=yes
Restart tomcat and that’s you running on port 80.
NOTE: Default installation of Tomcat 7 for Debian binds only ports higher than 1023 (Port 8080 by default). The above commands allows binding to privileged ports.
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