Compex Systems SGX3226 用户手册

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Chapter 5 
Web-based Interface Configuration for Compex SGX3226 
 
 
31 
The Internet makes two transport protocols available to its applications, 
namely TCP and UDP. 
 
Transmission Control Protocol 
(TCP) 
For building a reliable 
communications stream on top of 
the unreliable packet Internet 
Protocol (IP). TCP is the protocol 
that supports nearly all Internet 
applications. 
 
User Diagram Protocol (UDP)  
A connectionless protocol that 
runs on top of IP networks. 
UDP/IP provides very few errors 
recovery services, offering instead 
a direct way to send and receive 
datagrams over an IP network. It is 
used primarily for broadcasting 
messages over a network. 
 
 
5.6.3 
Filtering Setting 
 
Compex SGX3226 allows Packet Filtering rules be defined based on three 
factors, Source IP Address, TCP Port and Time. IP Packet Filtering 
examines the outgoing packets and decides whether to bypass or to block 
them. After the Packet Filtering rules have been defined, the users may 
select to bypass or to block the outgoing packets that do not match the rules. 
 
For example, assume that a rule has been defined as "TCP Port 23 (used by 
TELNET) from any IP on any day at any time". If the “forwarded” radio 
button is selected, all outgoing packets will be sent except TELNET session. 
If the blocked radio button is selected, all outgoing packets will be blocked 
except TELNET session. 
 
Click on Filtering section at the Configuration window and the GUI will 
appear as shown: