I saw the below in the large Tomato releases thread and thought I'd make a new thread so it doesn't get buried. I just spent an hour or so getting QoS to work correctly with CrashPlan. My account backs up to IPs in 50.93.246.x. In CrashPlan (under Settings - Network), set the TCP packet TOS to Low for WAN (though I did both - shouldn't matter). Then, add a Tomato QoS rule for: -TCP destination port 443 -DSCP class BE (0x00) It's a bug in CrashPlan that "Low" corresponds to 0x00, which is technically a deprecated code for normal traffic. Not sure if/when they'll fix it. Here's a link to a thread about it on CrashPlan's site. https://crashplan.zendesk.com/entries/139167-outgoing-ports-what-range-need-for-qos-setup I didn't have any luck getting CrashPlan to work when I tried typing in manual numbers for the TOS, but this works fine.