1*5e7646d2SAndroid Build Coastguard Worker<!DOCTYPE html> 2*5e7646d2SAndroid Build Coastguard Worker<html> 3*5e7646d2SAndroid Build Coastguard Worker<!-- SECTION: Getting Started --> 4*5e7646d2SAndroid Build Coastguard Worker <head> 5*5e7646d2SAndroid Build Coastguard Worker <title>Firewalls</title> 6*5e7646d2SAndroid Build Coastguard Worker <link rel="stylesheet" type="text/css" href="../cups-printable.css"> 7*5e7646d2SAndroid Build Coastguard Worker </head> 8*5e7646d2SAndroid Build Coastguard Worker <body> 9*5e7646d2SAndroid Build Coastguard Worker <h1 class="title">Firewalls</h1> 10*5e7646d2SAndroid Build Coastguard Worker 11*5e7646d2SAndroid Build Coastguard Worker <p>This help document describes the ports that CUPS uses so that firewall administrators can allow traffic used for printing.</p> 12*5e7646d2SAndroid Build Coastguard Worker 13*5e7646d2SAndroid Build Coastguard Worker <h2 class="title" id="SHARING">Ports Used for Printer Sharing</h2> 14*5e7646d2SAndroid Build Coastguard Worker 15*5e7646d2SAndroid Build Coastguard Worker <p>Table 1 lists the ports that are used for IPP printer sharing via CUPS.</p> 16*5e7646d2SAndroid Build Coastguard Worker 17*5e7646d2SAndroid Build Coastguard Worker <div class="table"><table summary="Ports Used for IPP Printer Sharing"> 18*5e7646d2SAndroid Build Coastguard Worker <caption>Table 1: Ports Used for IPP Printer Sharing</caption> 19*5e7646d2SAndroid Build Coastguard Worker <thead> 20*5e7646d2SAndroid Build Coastguard Worker <tr><th>(Destination) Port</th><th>TCP/UDP</th><th>Direction</th><th>Description</th></tr> 21*5e7646d2SAndroid Build Coastguard Worker </thead> 22*5e7646d2SAndroid Build Coastguard Worker <tbody> 23*5e7646d2SAndroid Build Coastguard Worker <tr><td>53 (DNS)</td><td>TCP/UDP</td><td>OUT</td><td>Domain Name System lookups and service registrations.</td></tr> 24*5e7646d2SAndroid Build Coastguard Worker <tr><td>631 (IPP/IPPS)</td><td>TCP</td><td>IN</td><td>Internet Printing Protocol requests and responses (print jobs, status monitoring, etc.)</td></tr> 25*5e7646d2SAndroid Build Coastguard Worker <tr><td>5353 (mDNS)</td><td>UDP</td><td>IN+OUT</td><td>Multicast DNS lookups and service registrations.</td></tr> 26*5e7646d2SAndroid Build Coastguard Worker </tbody> 27*5e7646d2SAndroid Build Coastguard Worker </table></div> 28*5e7646d2SAndroid Build Coastguard Worker 29*5e7646d2SAndroid Build Coastguard Worker <p>Table 2 lists the ports that are used for SMB (Windows) printer sharing, typically via the Samba software.</p> 30*5e7646d2SAndroid Build Coastguard Worker 31*5e7646d2SAndroid Build Coastguard Worker <div class="table"><table summary="Ports Used for SMB Printer Sharing"> 32*5e7646d2SAndroid Build Coastguard Worker <caption>Table 2: Ports Used for SMB Printer Sharing</caption> 33*5e7646d2SAndroid Build Coastguard Worker <thead> 34*5e7646d2SAndroid Build Coastguard Worker <tr><th>(Destination) Port(s)</th><th>TCP/UDP</th><th>Direction</th><th>Description</th></tr> 35*5e7646d2SAndroid Build Coastguard Worker </thead> 36*5e7646d2SAndroid Build Coastguard Worker <tbody> 37*5e7646d2SAndroid Build Coastguard Worker <tr><td>137 (WINS)</td><td>UDP</td><td>IN+OUT</td><td>Windows Internet Naming Service (name lookup for SMB printing).</td></tr> 38*5e7646d2SAndroid Build Coastguard Worker <tr><td>139 (SMB)</td><td>TCP</td><td>IN</td><td>Windows SMB printing.</td></tr> 39*5e7646d2SAndroid Build Coastguard Worker <tr><td>445 (SMBDS)</td><td>TCP</td><td>IN+OUT</td><td>Windows SMB Domain Server (authenticated SMB printing).</td></tr> 40*5e7646d2SAndroid Build Coastguard Worker </tbody> 41*5e7646d2SAndroid Build Coastguard Worker </table></div> 42*5e7646d2SAndroid Build Coastguard Worker 43*5e7646d2SAndroid Build Coastguard Worker 44*5e7646d2SAndroid Build Coastguard Worker <h2 class="title" id="PRINTERS">Ports Used for Network Printers</h2> 45*5e7646d2SAndroid Build Coastguard Worker 46*5e7646d2SAndroid Build Coastguard Worker <p>Table 3 lists the ports for outgoing network traffic that are used for network printers.</p> 47*5e7646d2SAndroid Build Coastguard Worker 48*5e7646d2SAndroid Build Coastguard Worker <blockquote><b>Notes:</b> 49*5e7646d2SAndroid Build Coastguard Worker <ol> 50*5e7646d2SAndroid Build Coastguard Worker <li>DNS and mDNS are used for all printing protocols except SMB.</li> 51*5e7646d2SAndroid Build Coastguard Worker <li>SNMP is used to provide status and supply level information for AppSocket and LPD printers.</li> 52*5e7646d2SAndroid Build Coastguard Worker </ol> 53*5e7646d2SAndroid Build Coastguard Worker </blockquote> 54*5e7646d2SAndroid Build Coastguard Worker 55*5e7646d2SAndroid Build Coastguard Worker <div class="table"><table summary="Outgoing Ports Used for Network Printers"> 56*5e7646d2SAndroid Build Coastguard Worker <caption>Table 3: Outgoing Ports Used for Network Printers</caption> 57*5e7646d2SAndroid Build Coastguard Worker <thead> 58*5e7646d2SAndroid Build Coastguard Worker <tr><th>(Destination) Port(s)</th><th>TCP/UDP</th><th>Description</th></tr> 59*5e7646d2SAndroid Build Coastguard Worker </thead> 60*5e7646d2SAndroid Build Coastguard Worker <tbody> 61*5e7646d2SAndroid Build Coastguard Worker <tr><td>53 (DNS)</td><td>TCP/UDP</td><td>Domain Name System lookups.</td></tr> 62*5e7646d2SAndroid Build Coastguard Worker <tr><td>137 (WINS)</td><td>UDP</td><td>Windows Internet Naming Service (name lookup for SMB printing).</td></tr> 63*5e7646d2SAndroid Build Coastguard Worker <tr><td>139 (SMB)</td><td>TCP</td><td>Windows SMB printing.</td></tr> 64*5e7646d2SAndroid Build Coastguard Worker <tr><td>161 (SNMP)</td><td>UDP</td><td>SNMP browsing (broadcast) and status monitoring (directed to printer IP address).</td></tr> 65*5e7646d2SAndroid Build Coastguard Worker <tr><td>443 (IPPS)</td><td>TCP</td><td>Internet Printing Protocol requests and responses (print jobs, status monitoring, etc.)</td></tr> 66*5e7646d2SAndroid Build Coastguard Worker <tr><td>445 (SMBDS)</td><td>TCP</td><td>Windows SMB Domain Server (authenticated SMB printing).</td></tr> 67*5e7646d2SAndroid Build Coastguard Worker <tr><td>515 (LPD)</td><td>TCP</td><td>Line Printer Daemon (LPD/lpr) print job submission and status monitoring.</td></tr> 68*5e7646d2SAndroid Build Coastguard Worker <tr><td>631 (IPP/IPPS)</td><td>TCP</td><td>Internet Printing Protocol requests and responses (print jobs, status monitoring, etc.)</td></tr> 69*5e7646d2SAndroid Build Coastguard Worker <tr><td>5353 (mDNS)</td><td>UDP</td><td>Multicast DNS lookups.</td></tr> 70*5e7646d2SAndroid Build Coastguard Worker <tr><td>9100-9102</td><td>TCP</td><td>Raw print data stream (AppSocket/JetDirect).</td></tr> 71*5e7646d2SAndroid Build Coastguard Worker </tbody> 72*5e7646d2SAndroid Build Coastguard Worker </table></div> 73*5e7646d2SAndroid Build Coastguard Worker </body> 74*5e7646d2SAndroid Build Coastguard Worker</html> 75