Why isn't my IPSec tunnel passing application traffic?
If you are trying to pass application traffic over an IPSec tunnel, you should bypass all IPSec tunnels from the Untangle filtering apps. (Application traffic includes things like VOIP, RDP, or anything other than simple port 80 and 443 HTTP and HTTPS requests.) The filtering applications on Untangle can interfere with the traffic in the tunnel: bypassing this traffic will prevent that from happening.
To bypass tunnel traffic, go to Apps > IPsec VPN > IPsec Options and enable the checkbox for "Bypass all IPsec traffic":
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