tsm

dyndns make me tired and I gave up
but it is good
I find change-ip.com even better
some domain name not filtered by GW
and fairly stable

of course there is one even better solution
register a domain name (xxxx.biz cause you US$3 per year)
and you can update it
i don;t think GW will filter your xxxx.biz
or you can then use yyyy.xxxx.biz
right?