While some older versions of NOD32 allowed users to manually enter a "Custom Update Server" address, modern versions (like Version 16 and 17) have largely restricted this to prevent security bypasses. Using unofficial servers can result in: Delayed Protection
Enterprise mirrors that have been accidentally left open to the public internet. eset nod32 update server list free
Hackers who set up fake update servers to deliberately feed modified or outdated databases to unsuspecting users. The Danger of Using Free Unofficial Update Servers While some older versions of NOD32 allowed users
However, there are also limitations: