On 09/17/2015 11:52 PM, Shawn Parks - CMAC wrote: > Centos users, > I new to Centos 7 and my problem is the following: > I am using my Centos 7 system as a print server in a warehouse. > Using cups for the print queue's. Which I can print to the printers > find from the Centos 7 machine. > > The hosting system is Sco Unix using lpd printing. This machine is > in Illinois and the warehouse / Centos 7 machine is in Arizona. > > I have loaded "cups-lpd" using yum and it seems fine. I have > also setup "/etc/xinetd.d/cups-lpd" > > Following is a "netstat -tanp |grep -i listen" > > tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1090/sshd > tcp 0 0 0.0.0.0:631 0.0.0.0:* LISTEN > 1096/cupsd > tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN > 1671/master > tcp6 0 0 :::515 :::* LISTEN 1095/xinetd > tcp6 0 0 :::22 :::* LISTEN 1090/sshd > tcp6 0 0 :::631 :::* LISTEN 1096/cupsd > tcp6 0 0 ::1:25 :::* LISTEN 1671/master > > I notice that "port 515" is only listening on tcp6 not tcp. > > Question: could this be my problem? and how can I get "port 515" to be > listened to on tcp? > > my Sco Unix print queue "status" file says "waiting for gate to come up". > > I have had the local hardware person verify that the router is "port > forwarding" port 515 > to my Centos 7 system. > > Help in this matter would be greatly appreciated. tcp6 is just TCP over IPv6. I suspect your /etc/xinetd.d/cups-lpd has a setting specifying IPv6 rather than IPv4?