Filter
Top Products
40-9
Cisco Router and Security Device Manager 2.5 User’s Guide
OL-4015-12
Chapter 40 More About....
Services and Ports
netbios-ns 137 NetBios name service
netbios-ss 139 NetBios session service
ntp 123 Network Time Protocol. TCP protocol that ensures accurate local
timekeeping with reference to radio and atomic clocks located on the
Internet.
pim-auto-rp 496 Protocol Independent Multicast, reverse path flooding, dense mode
rip 520 Routing Information Protocol. A protocol used to exchange route
information between routers.
snmp 161 Simple Network Management Protocol. A protocol used to monitor and
control network devices.
snmptrap 162 SNMP trap. A system management notification of some event that
occurred on the remotely managed system.
sunrpc 111 SUN Remote Procedure Call. RPCs are procedure calls that are built or
specified by clients and executed on servers, with the results returned
over the network to the client.
syslog 514 System log service.
tacacs 49 Terminal Access Controller Access Control System. Authentication
protocol that provides remote access authentication and related services,
such as logging.
talk 517 Talk. A protocol originally intended for communication between
teletype terminals, but now a rendezvous port from which a TCP
connection can be established.
tftp 69 Trivial File Transfer Protocol. Simplified version of FTP that allows
files to be transferred between network nodes.
time 37 Time.
who 513 Port to databases showing who is logged in to machines on a local net
and the load average of the machine
xdmcp 177 X-Display Manager Client Protocol. A protocol used for
communications between X-Displays (clients) and X Display Managers.
non500-isak
mp
4500 Internet Security Association and Key Management Protocol. This
keyword is used when NAT-traversal port floating is required.
UDP Service Port Number Description