Brocade Communications Systems Mobility 7131 Series Service Manual download pdf (Page 226)

214 Brocade Mobility 7131 Access Point Product Reference Guide

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4. Click Apply to save any changes to the Subnet Access screen. Navigating away from the screen

without clicking the Apply button results in all changes to the screens being lost.

5. Click Undo Changes (if necessary) to undo any changes made. Undo Changes reverts the

settings displayed on the Subnet Access screen to the last saved configuration.

6. Click Logout to securely exit the Access Point applet. A prompt displays confirming the logout

before the applet is closed.

Available Protocols

Protocols that are not pre-configured can be specified using the drop down list within the Transport

column within the Subnet Access and Advanced Subnet Access screens. They include:

• ALL - Enables all of the protocol options displayed in the drop-down menu (as described

below).

• 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 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).

Del (Delete) Click Del (Delete) to remove a selected list entry.

Name Specify a name for a newly configured protocol.

Transport Select a protocol from the drop-down menu. For a detailed description of the protocols

available, see Available Protocols on page 6-214.

Start Port Enter the starting port number for a range of ports. If the protocol uses a single port, enter

that port in this field.

End Port Enter the ending port number for a port range. If the protocol uses a single port, leave the

field blank. A new entry might use Web Traffic for its name, TCP for its protocol, and 80 for

its port number.

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