well that is a good question.
i would like to reply with a simple "yes".
but i have a spare min so will prattle on!.
its a security risk to be on the internet anyway.
opening port 80 (or any port) never helps.
if someone wanted to hack u etc they would regardless of your security measures.
i suggest u forward the ports and go for it dont worry all will be fine
i have run a webcame from my home at times and made it available via a webserver all seemed fine.