ZyXEL Communications NBG410W3G - Manual (Page 297)

Chapter 18 ALG Screen
NBG410W3G Series User’s Guide
297
Figure 185 ADVANCED > ALG
The following table describes the labels in this screen.
Table 87 ADVANCED > ALG
LABEL DESCRIPTION
Enable FTP
ALG
Select this check box to allow FTP sessions to pass through the ZyXEL Device. FTP
(File Transfer Program) is a program that enables fast transfer of files, including
large files that may not be possible by e-mail.
Enable H.323
ALG
Select this check box to allow H.323 sessions to pass through the ZyXEL Device.
H.323 is a protocol used for audio communications over networks.
Enable SIP
ALG
Select this check box to allow SIP sessions to pass through the ZyXEL Device. SIP
is a signaling protocol used in VoIP (Voice over IP), the sending of voice signals over
Internet Protocol.
SIP Timeout Most SIP clients have an “expire” mechanism indicating the lifetime of signaling
sessions. The SIP user agent sends registration packets to the SIP server
periodically and keeps the session alive in the ZyXEL Device.
If the SIP client does not have this mechanism and makes no calls during the ZyXEL
Device SIP timeout (default 60 minutes), the ZyXEL Device SIP ALG drops any
incoming calls after the timeout period. Enter the SIP signaling session timeout
value.
Apply Click Apply to save your changes.
Reset Click Reset to begin configuring this screen afresh.