Follow these steps to manually download a copy of McAfee anti-virus client on the computer behind a SonicWall appliance:
Step 1: Log into the SonicWall Management Interface of your SonicWall appliance.
Step 2: Generate the Technical Support Report (TSR) from the System > Diagnostics page.
Step 3: Open the TSR file and (perform a page search with keyword "downloadurl") locate the DownloadUrl entry in the Anti-Virus section. This URL includes a ck= value representing the specific Company Key for your Enforced Client Anti-Virus license.
Step 4: Copy and Paste the complete URL shown into the IE browser's address bar. You will be taken to a page where you may download a copy of the client for manual installation.