Like others have said, it would be better to find out the ports from your company and just opening them instead of disabling your firewall and opening all of your ports. Also, I would have a good anti-virus protection if your company isn't willing to tell you and that it's up to date as without a firewall your vulnerable to attacks. If your using Windows then I would highly recommend that you always get the latest updates with the latest service packs as anti-virus protection can't protect you from everything. With windows updates and anti-virus protection I believe that you should be fine.