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WS 2000 Wireless Switch System Reference Guide4-6
Configuring Content Filtering
Content filtering allows system administrators to block specific commands and URL extensions from going out through the
WS 2000 switch’s WAN port. This feature allows blocking up to 10 files or URL extensions and allows blocking of specific
outbound HTTP, SMTP, and FTP requests.
To configure content filtering, select Network Configuration --> Content Filtering from the left menu.
1. Select the type of blocking for outbound HTTP requests. Check one or both of the options:
2. Enter the Outbound URL extensions to block. Do this by typing one URL extension or file name (filename.ext) per line.
Use an asterisk (*) as a wildcard in place of the filename to block all files with a specific extension (for example *.exe).
3. Simple Mail Transport Protocol (SMTP) is the Internet standard for host-to- host mail transport. SMTP generally
operates over TCP on port 25. SMTP filtering allows the blocking of any or all outgoing SMTP commands.Choose which
SMTP commands to block from the list, by checking those commands to block.
Web Proxy This selection blocks the use of web proxies by clients.
ActiveX This selection blocks all outgoing ActiveX requests by clients.
HELO (Hello) This command is used to identify the SMTP sender to the SMTP receiver.
MAIL (Mail) This command initiates a mail transaction where mail data is delivered to one or more mail-
boxes on the local server.
RCPT (Recipient) This command is used to identify a recipient of mail data.
DATA (Data) This command tells the SMTP receiver to treat the following information as mail data from
the sender.