Xerox WorkCentre 7220 Information page 26

2.8.2.18. Port 631, IPP
This port supports the Internet Printing Protocol. It is not configurable. This is disabled when the http (web) server is
disabled.
2.8.2.19. Port 1900, SSDP
This port behaves similarly to the SLP port. When activated, this port is used for service discovery and advertisement.
The device will advertise itself as a printer and also listen for SSDP queries using this port. It is not configurable. This
port is explicitly enabled / disabled in the Properties tab of the device's web pages.
2.8.2.20. Port 3003, HTTP/SNMP reply
This port is used when the http server requests device information. The user displays the Web User Interface
(WebUI) and goes to a page where the http server must query the device for settings (e.g. Novell network settings).
The http server queries the machine via an internal SNMP request (hence this port can only open when the http
server is active). The machine replies back to the http server via this port. It sends the reply to the loopback address
(127.0.0.0), which is internally routed to the http server. This reply is never transmitted on the network. Only SNMP
replies are accepted by this port, and this port is active when the http server is active (i.e. if the http server is disabled,
this port will be closed). If someone attempted to send an SNMP reply to this port via the network, the reply would
have to contain the correct sequence number, which is highly unlikely, since the sequence numbers are internal to the
machine.
Port 3702, WSD Discovery, WS Discovery Multicast
2.8.2.21.
This is the default port for WS-Discovery (the discovery of services in an ad hoc network with a minimum of
networking services (for example, no DNS, UDDI or other directory services). It does this by announcing or advertising
the existence of the printer and its services on the network when it becomes available, and announcing its departure
when unavailable. The default state is selected (enabled).
2.8.2.22. Port 4500 ISAKMP
See Port 500. Port 4500 is an alternate port for port 500.
2.8.2.23. Port 5353 Multicast DNS, 5354 Multicast DNS Responder IPC
Multicast DNS provides the ability to address hosts using DNS-like names without the need of an existing, managed
DNS server. The Multicast DNS Responder is a client in the printer that replies to multicast DNS requests for
services on the local network. The multicast DNS requests and replies conform to RFC 1034 and RFC 2782 and are
broadcast to the destination IP address 224.0.0.251 on port 5353. The se ports will only be open if the Multicast
DNS service is enabled.
2.8.2.24. Port 5909-5999 Remote View of Local UI
This allows the user to view (if enabled by the system administrator) the Local UI (Control Panel) through a Web
Browser to view and control the device. The ports are randomized at each use for security puposes.
2.8.2.25. Port 9100, raw IP
This allows downloading a PDL file directly to the interpreter. This port has limited bi-directionality (via PJL back
channel) and allows printing only. This is a configurable port, and may be disabled in the Properties tab of the
device's web pages.
2.8.2.26. Port 28002, WS
Web Service interface(s) used to programmatically configure device usage of Workflow Scanning features such as
template management.
Ver. 1.0, January 2013
WorkCentre 7220-7225 Information Assurance Disclosure Paper
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