Topic Last Modified: 2010-04-27
Microsoft Communications Server 2010 provides a global file transfer filter that blocks specific types of files during the following file-related activities within your Communications Server 2010 deployment:
- File transfer requests during instant message (IM)
- File uploads and downloads while using the handout feature in
the Office Live Meeting 2007 client
- Multimedia playback during online conferences
Depending on the types of files you want to block or allow, you can use Communications Server Control Panel to modify the global filter. For details about file transfer filtering, see Configuring Instant Message (IM) Filtering.
To modify the default file transfer filter
Open Communications Server Control Panel.
In the left navigation bar, click IM and Presence.
On the File Filter page, double-click the Global filter.
In the Edit File Filter dialog box, click the Enable file filter check box.
In the File transfer drop-down list box, click Block All or Block specific file types.
If you clicked Block All, skip to step 8.
If you clicked Block specific file types, do the following:
- Click Select to modify the default list of file type
extensions that you want to block.
- In the Select File Type dialog box, select the file
types that you want to block or allow by adding or removing their
extensions from the categories under File type
- If you do not see the extension for a file type that you want
to block, type the extension in the text box under Add new file
extensions to the list, and then click Add.
- Click OK.
- Click Select to modify the default list of file type extensions that you want to block.