Try a smart phone. Looking back at my Tomato archive, I see that I was doing that in early 2008 with Tomato 1.17 base.
And, at that time, I had a WinCE 2003SE device for my low end handheld. Also used my WinME 5 phone, a VZW VX6700 too. I could get in and run the web console.
Since then, I've bought 3 Androids, and have got all of them doing stuff. There is a ton of stuff out there in "network tools" on android market. By now, just about any network tool you'd care to name has been ported to the mobile market. Check you phone and see.