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6-18
Motorola Solutions AP-7131N-FGR Access Point Product Reference Guide
• TCP - Transmission Control Protocol is a set of rules for sending data as message units over
the Internet. TCP manages individual data packets. Messages are divided into packets for
efficient routing through the Internet.
• UDP - User Datagram Protocol is used for broadcasting data over the Internet. Like TCP, UDP
runs on top of Internet Protocol (IP) networks. Unlike TCP/IP, UDP/IP provides few error
recovery services. UDP offers a way to directly connect, and then send and receive
datagrams over an IP network.
• ICMP - Internet Control Message Protocol is tightly integrated with IP. ICMP messages are
used for out-of-band messages related to network operation. ICMP packet delivery is
unreliable. Hosts cannot count on receiving ICMP packets for a network problem.
• AH - Authentication Header is one of the two key components of IP Security Protocol (IPsec).
The other key component is Encapsulating Security Protocol (ESP).
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 is one of two key components of IP Security Protocol
(IPsec). The other key component is Authentication Header (AH). ESP encrypts the packets
and provides authentication services. ESP can be used in transport mode, providing security
between two end points. ESP can also be used in tunnel mode, providing security like that
of a Virtual Private Network (VPN).
• GRE - General Routing Encapsulation 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 using globally assigned IP addresses.
6.6.2 Configuring Advanced Subnet Access
Use the
Advanced Subnet Access
source port, destination port, and transport protocol. To enable advanced subnet access, the subnet
access rules must be overridden. However, the Advanced Subnet Access screen allows you to import
existing subnet access rules into the advanced subnet access rules.
To configure access point Advanced Subnet Access:
1. Select
Network Configuration
access point menu tree.
screen to configure complex access rules and filtering based on
->
Firewall
->
Advanced Subnet Access
from the
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