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My filter blocks firefox from downloading if I had an IP range for update servers I can unblock it.

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We use iBoss filtering and block .exe extentions by default but can allow them for certain IP ranges.

We use iBoss filtering and block .exe extentions by default but can allow them for certain IP ranges.

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I pinged mozilla.org and here's the IP I got: 63.245.215.20

This should work for your filter, try it out and reply back if it doesn't.

Jon