Symbol Technologies WS 2000 - Manual (Page 42)

Step 8: Configure Subnet Access
• Select a transport type from the Transport column’s pulldown menu. The
available transports are:
Transport Description
ALL This selection designates all of the protocols displayed in the
table’s pull-down list, as described below.
TCP Transmission Control Protocol (TCP) is a set of rules used with
Internet Protocol (IP) to send data as message units over the
Internet. While IP handles the actual delivery of data, TCP
keeps track of individual units of data called packets. Messages
are divided into packets for efficient routing through the Internet.
UDP User Datagram Protocol (UDP) is mostly used for broadcasting
data over the Internet. Like TCP, UDP runs on top of Internet
Protocol (IP) networks. Unlike TCP/IP, UDP/IP provides very
few error recovery services and methods. UDP offers a way to
directly connect, and then send and receive datagrams over an
IP network.
ICMP Internet Control Message Protocol (ICMP) is tightly integrated
with IP. ICMP messages, delivered in IP packets, are used for
out-of-band messages related to network operation. Because
ICMP uses IP, ICMP packet delivery is unreliable. Hosts cannot
count on receiving ICMP packets for a network problem.
AH Authentication Header (AH) is one of the two key components of
IPsec (IP Security Protocol). The other key component is
Encapsulating Security Protocol (ESP), described below.
AH provides authentication, proving the packet sender really is
the sender, and the data really is the data sent. AH can be used
in transport mode, providing security between two end points.
Also, AH can be used in tunnel mode, providing security like that
of a Virtual Private Network (VPN).
ESP Encapsulating Security Protocol (ESP) is one of the two key
components of IPsec (IP Security Protocol). The other key
component is Authentication Header (AH), described above.
ESP encrypts the payload of packets, and also provides
authentication services. ESP can be used in transport mode,
providing security between two end points. Also, ESP can be
used in tunnel mode, providing security like that of a Virtual
Private Network (VPN).
GRE General Routing Encapsulation (GRE) supports VPNs across
the Internet. GRE is a mechanism for encapsulating network
layer protocols over any other network layer protocol. Such
encapsulation allows routing of IP packets between private IP
networks across an Internet that uses globally assigned IP
addresses.
• Specify port information for the protocol. If a protocol uses only one port, enter the
same port number in the Start Port and End Port columns, or leave the End
Port column blank. Otherwise, use both columns for an entry that has a range of
ports.
5. Click the Apply button to save changes.
Copyright © 2004 Symbol Technologies, Inc. All Rights Reserved 42
WS 2000 Wireless Switch: 1.0 Date of last Revision: March 2004