EveryonePrint runs its LDP server on TCP port 8515, and that cannot be changed.
iptables is used in the application to redirect incoming connection on LPD port 515 to this 8515

 

 

On some systems it has been reported that the iptable redirection doesn't work, as seen below:

 

$ cat /var/log/messages |grep redirect 
2017-09-21T14:49:05.349844+02:00 elps02 disable_redirect.sh[17574]: Disabling redirect for IF: eth0... 
2017-09-21T14:49:05.361589+02:00 elps02 disable_redirect.sh[17574]: iptables v1.4.21: can't initialize iptables table `nat': Permission denied (you must be root) 
2017-09-21T14:49:05.361774+02:00 elps02 disable_redirect.sh[17574]: Perhaps iptables or your kernel needs to be upgraded. 
2017-09-21T14:49:05.363727+02:00 elps02 disable_redirect.sh[17574]: iptables v1.4.21: can't initialize iptables table `nat': Permission denied (you must be root) 

 

 

Open a terminal session: 

• cd to: /opt/everyoneprint/system-init

• enter:  sudo ./enable_redirect.sh

• this will enable the rule, that you can verify with: sudo iptables -L -t nat |grep 8515

• result should be:

REDIRECT   tcp  --  anywhere             anywhere             tcp dpt:printer redir ports 8515
REDIRECT   udp  --  anywhere             anywhere             udp dpt:printer redir ports 8515

Warning: the change in iptables is not permanent, after a reboot of the server, the command needs to be launched again