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P-2602H(W)(L)-DxA Series User’s Guide
Appendix F Services
371
A
PPENDIX
F
Services
The following table lists some commonly-used services and their associated protocols and port
numbers.
Name
: This is a short, descriptive name for the service. You can use this one or create a
different one, if you like.
Protocol
: This is the type of IP protocol used by the service. If this is
TCP/UDP
, then the
service uses the same port number with TCP and UDP. If this is
USER-DEFINED
, the
Port(s
) is the IP protocol number, not the port number.
Port(s)
: This value depends on the
Protocol
.
If the
Protocol
is
TCP
,
UDP
, or
TCP/UDP
, this is the IP port
number.
If the
Protocol
is
USER
, this is the IP protocol number.
Description
: This is a brief explanation of the applications that use this service or the
situations in which this service is used.
Table 150
Examples of Services
NAME
PROTOCOL
PORT(S)
DESCRIPTION
AH
(IPSEC_TUNNEL)
User-Defined
51
The IPSEC AH (Authentication Header)
tunneling protocol uses this service.
AIM
TCP
5190
AOL’s Internet Messenger service.
AUTH
TCP
113
Authentication protocol used by some
servers.
BGP
TCP
179
Border Gateway Protocol.
BOOTP_CLIENT
UDP
68
DHCP Client.
BOOTP_SERVER
UDP
67
DHCP Server.
CU-SEEME
TCP/UDP
TCP/UDP
7648
24032
A popular videoconferencing solution from
White Pines Software.
DNS
TCP/UDP
53
Domain Name Server, a service that
matches web names (e.g.
www.zyxel.com
)
to IP numbers.
ESP
(IPSEC_TUNNEL)
User-Defined
50
The IPSEC ESP (Encapsulation Security
Protocol) tunneling protocol uses this
service.
FINGER
TCP
79
Finger is a UNIX or Internet related
command that can be used to find out if a
user is logged on.
FTP
TCP
TCP
20
21
File Transfer Program, a program to enable
fast transfer of files, including large files that
may not be possible by e-mail.
H.323
TCP
1720
NetMeeting uses this protocol.
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372
Appendix F Services
HTTP
TCP
80
Hyper Text Transfer Protocol - a client/
server protocol for the world wide web.
HTTPS
TCP
443
HTTPS is a secured http session often used
in e-commerce.
ICMP
User-Defined
1
Internet Control Message Protocol is often
used for diagnostic purposes.
ICQ
UDP
4000
This is a popular Internet chat program.
IGMP (MULTICAST)
User-Defined
2
Internet Group Multicast Protocol is used
when sending packets to a specific group of
hosts.
IKE
UDP
500
The Internet Key Exchange algorithm is
used for key distribution and management.
IMAP4
TCP
143
The Internet Message Access Protocol is
used for e-mail.
IMAP4S
TCP
993
This is a more secure version of IMAP4 that
runs over SSL.
IRC
TCP/UDP
6667
This is another popular Internet chat
program.
MSN Messenger
TCP
1863
Microsoft Networks’ messenger service
uses this protocol.
NetBIOS
TCP/UDP
TCP/UDP
TCP/UDP
TCP/UDP
137
138
139
445
The Network Basic Input/Output System is
used for communication between
computers in a LAN.
NEW-ICQ
TCP
5190
An Internet chat program.
NEWS
TCP
144
A protocol for news groups.
NFS
UDP
2049
Network File System - NFS is a client/
server distributed file service that provides
transparent file sharing for network
environments.
NNTP
TCP
119
Network News Transport Protocol is the
delivery mechanism for the USENET
newsgroup service.
PING
User-Defined
1
Packet INternet Groper is a protocol that
sends out ICMP echo requests to test
whether or not a remote host is reachable.
POP3
TCP
110
Post Office Protocol version 3 lets a client
computer get e-mail from a POP3 server
through a temporary connection (TCP/IP or
other).
POP3S
TCP
995
This is a more secure version of POP3 that
runs over SSL.
PPTP
TCP
1723
Point-to-Point Tunneling Protocol enables
secure transfer of data over public
networks. This is the control channel.
PPTP_TUNNEL
(GRE)
User-Defined
47
PPTP (Point-to-Point Tunneling Protocol)
enables secure transfer of data over public
networks. This is the data channel.
Table 150
Examples of Services (continued)
NAME
PROTOCOL
PORT(S)
DESCRIPTION
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P-2602H(W)(L)-DxA Series User’s Guide
Appendix F Services
373
RCMD
TCP
512
Remote Command Service.
REAL_AUDIO
TCP
7070
A streaming audio service that enables real
time sound over the web.
REXEC
TCP
514
Remote Execution Daemon.
RLOGIN
TCP
513
Remote Login.
ROADRUNNER
TCP/UDP
1026
This is an ISP that provides services mainly
for cable modems.
RTELNET
TCP
107
Remote Telnet.
RTSP
TCP/UDP
554
The Real Time Streaming (media control)
Protocol (RTSP) is a remote control for
multimedia on the Internet.
SFTP
TCP
115
The Simple File Transfer Protocol is an old
way of transferring files between
computers.
SMTP
TCP
25
Simple Mail Transfer Protocol is the
message-exchange standard for the
Internet. SMTP enables you to move
messages from one e-mail server to
another.
SMTPS
TCP
465
This is a more secure version of SMTP that
runs over SSL.
SNMP
TCP/UDP
161
Simple Network Management Program.
SNMP-TRAPS
TCP/UDP
162
Traps for use with the SNMP (RFC:1215).
SQL-NET
TCP
1521
Structured Query Language is an interface
to access data on many different types of
database systems, including mainframes,
midrange systems, UNIX systems and
network servers.
SSDP
UDP
1900
The Simple Service Discovery Protocol
supports Universal Plug-and-Play (UPnP).
SSH
TCP/UDP
22
Secure Shell Remote Login Program.
STRM WORKS
UDP
1558
Stream Works Protocol.
SYSLOG
UDP
514
Syslog allows you to send system logs to a
UNIX server.
TACACS
UDP
49
Login Host Protocol used for (Terminal
Access Controller Access Control System).
TELNET
TCP
23
Telnet is the login and terminal emulation
protocol common on the Internet and in
UNIX environments. It operates over TCP/
IP networks. Its primary function is to allow
users to log into remote host systems.
Table 150
Examples of Services (continued)
NAME
PROTOCOL
PORT(S)
DESCRIPTION
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374
Appendix F Services
TFTP
UDP
69
Trivial File Transfer Protocol is an Internet
file transfer protocol similar to FTP, but
uses the UDP (User Datagram Protocol)
rather than TCP (Transmission Control
Protocol).
VDOLIVE
TCP
UDP
7000
user-
defined
A videoconferencing solution. The UDP port
number is specified in the application.
Table 150
Examples of Services (continued)
NAME
PROTOCOL
PORT(S)
DESCRIPTION
Page 375 / 427
P-2602H(W)(L)-DxA Series User’s Guide
Appendix G Firewall Commands
375
A
PPENDIX
G
Firewall Commands
Sys Firewall Commands
The following describes the firewall commands. See the Command
Interpreter appendix for information on the command structure.
Each of
these commands must be preceded by
sys firewall
when you use
them. For example, type
sys firewall active yes
to turn on the
firewall.
Table 151
Sys Firewall
Commands
Command
Description
acl
disp
Displays ACLs or a specific ACL set # and rule #.
active
<yes|no>
Active firewall or deactivate firewall
Enables/disables the firewall.
cnt
disp
Displays the firewall log type and count.
clear
Clears the firewall log count.
pktdump
Dumps the last 64 bytes of packets that the firewall has dropped.
dynamicrule display
Displays the firewall’s dynamic rules.
tcprst
rst
Turns TCP reset sending on/off.
rst113
Turns TCP reset sending for port 113 on/off.
display
Displays the TCP reset sending settings.
icmp
This rule is not in use.
dos
smtp
Enables/disables the SMTP DoS defender.
display
Displays the SMTP DoS defender setting.
ignore
Sets if the firewall will ignore DoS attacks on the lan/wan.
ignore
dos
Sets if the firewall will ignore DoS attacks on the lan/wan.
triangle
Sets if the firewall will ignore triangle route packets on the lan/wan.

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