XEROX WorkCentre
3550
Information Assurance Disclosure Paper
16
Ver. 1.3, March 2011
Page
16 of 32
device-initiated operations (like scanning) cannot assume the existence of the tunnel unless a print job (or other
client initiated action) has been previously run since the last boot at either end of the connection.
2.8.2.
Ports
The following table summarizes all potential open ports and subsequent sections discuss each port in more detail.
Default
Port #
Type
Service name
25
TCP
SMTP
53
UDP
DNS
68
UDP
BOOTP/DHCP
80
TCP
HTTP
88
UDP/TCP
Kerberos
137
UDP
NETBIOS- Name Service
138
UDP
NETBIOS-Datagram Service; SMB filing and Scan template retrieval
139
TCP
NETBIOS; SMB filing and Scan template retrieval
161
UDP
SNMP
162
UDP
SNMP trap
389
UDP
LDAP
396
TCP
Netware
427
TCP/UDP
SLP
443
TCP
SSL
515
TCP
LPR
546
UDP
DHCPv6
631
TCP
IPP
636
TCP
sLDAP
1124
TCP/UDP
Network Scan Utility
1900
UDP
SSDP
3003
TCP
HTTP/SNMP reply
5200
TCP
UPnP
5353
UDP
Multicast DNS
6000
UDP
SetIP Utility
7000
UDP
LTP Utility
9100
TCP
Raw IP
9400
TCP
TWAIN for Network Utility
9401
TCP
TWAIN for Network Utility
Table 76 Network Ports
Please note that there is no FTP port in this list. FTP is only used to export scanned images and to retrieve Scan Job
Templates, and will open port 21 on the remote device. An FTP port is never open on the controller itself.
2.8.2.1.
Port 25, SMTP
This unidirectional port is open only when Scan to E-mail or Internet Fax (I-Fax) is exporting images to an SMTP
server, or when email alerts are being transmitted. SMTP messages & images are transmitted to the SMTP server
from the device.
2.8.2.2.
Port 53, DNS
Designating a DNS server will allow the device to resolve domain names. This can be configured via the Local UI or
WebUI.
