server running on IPv6 instead of IPv4
I just installed the Code Reviewer to try out on a Linux ubuntu 14.04 LTS machine. I already had a service on port 8080, so I put this at port 8888. I can access it fine on the local linux machine, but not from any others. When I ran a 'netstat -ntlp' I received the following that looks like it is listening on IPv6.
Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 0.0.0.0:3306 0.0.0.0:* LISTEN 3747/mysqld tcp 0 0 127.0.0.1:6379 0.0.0.0:* LISTEN 4501/redis-server 1 tcp 0 0 0.0.0.0:139 0.0.0.0:* LISTEN 1769/smbd tcp 0 0 0.0.0.0:23470 0.0.0.0:* LISTEN 3507/sshd tcp 0 0 127.0.0.1:8085 0.0.0.0:* LISTEN 7702/unicorn.rb -E tcp 0 0 0.0.0.0:21 0.0.0.0:* LISTEN 3282/vsftpd tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN 4984/cupsd tcp 0 0 0.0.0.0:25 0.0.0.0:* LISTEN 4481/master tcp 0 0 127.0.0.1:6010 0.0.0.0:* LISTEN 28909/0 tcp 0 0 0.0.0.0:445 0.0.0.0:* LISTEN 1769/smbd tcp 0 0 127.0.0.1:3551 0.0.0.0:* LISTEN 4872/apcupsd tcp 0 0 0.0.0.0:902 0.0.0.0:* LISTEN 5014/vmware-authdla tcp6 0 0 :::139 :::* LISTEN 1769/smbd tcp6 0 0 :::23470 :::* LISTEN 3507/sshd tcp6 0 0 :::80 :::* LISTEN 5760/apache2 tcp6 0 0 :::8080 :::* LISTEN 4114/java tcp6 0 0 :::8081 :::* LISTEN 4114/java tcp6 0 0 :::4949 :::* LISTEN 2426/perl tcp6 0 0 :::8086 :::* LISTEN 5760/apache2 tcp6 0 0 ::1:631 :::* LISTEN 4984/cupsd tcp6 0 0 :::8888 :::* LISTEN 5457/java tcp6 0 0 :::3000 :::* LISTEN 5760/apache2 tcp6 0 0 :::25 :::* LISTEN 4481/master tcp6 0 0 ::1:6010 :::* LISTEN 28909/0 tcp6 0 0 :::443 :::* LISTEN 5760/apache2 tcp6 0 0 :::445 :::* LISTEN 1769/smbd tcp6 0 0 127.0.0.1:8005 :::* LISTEN 4114/java
How do I set this up to have it listening on IPv4 so we can access from other machines on our network? My guess is it is in the tomcat settings, just not sure what to modify. Any ideas?
I found the problem. I needed to update the Linux firewall to allow accesses to port 8888. I did this with the following command.
sudo ufw allow 8888
I also found out how to force IPv4 usage instead of IPv6. That probably wasn't my problem, but I found out how to do it and thought I would pass this on too. I modified the ccollab-server.vmoptions file in /opt/ccollab_server folder. I added the following two lines:
-Djava.net.preferIPv4Stack=true -Djava.net.preferIPv4Addresses=true
This will direct the Tomcat and Catalina processes to use IPv4.
