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Installation LAN Integration
30
Local Area Connection Properties: Windows Firewall
5. Select the General tab in the Windows Firewall dialog. Activate the Inactive
(not recommended) option.
6. Alternatively you can also activate the Active (recommended) option. In this
case deactivate the Allow no exceptions option and go to the Advanced tab.
Deactivate the specific LAN connection used with the Aastra 800 communica-
tions system.
7. Confirm the settings with OK.
Note: You should never connect an unprotected computer
directly with the Internet. Be sure to use an appropriate
router for the Internet connection with an integrated Fire-
wall function. When you use SIP lines with the Aastra 800
communications system, the router product used must be
compatible with the SIP protocol and the related RTP con-
nections.
Tip: To increase system security with a deactivated personal Fire-
wall you can restrict the protocol connections of the LAN con-
nection. Deactivate all elements not in use in the Properties
dialog of the LAN connection. The Aastra 800 communica-
tions system only requires the Internet Protocol (TCP/IP)
element.