Currently Being ModeratedJan 13, 2014 4:14 AM (in response to dsartori)
It's not absolutely necessary but it would be more useful if you did have one. Most ISPs will require you to have a business class broadband service at your home rather than a residential one. These cost more (a lot more in some cases) than a residential service. Call your home location's ISP and discuss it with them.
If the cost is too much then you could go for a DynDNS account which is free. The details of this account would be configured in the whatever you're using as a firewall at your home's location. This assumes the firewall has the facility to add such an account. Thereafter it's just a question of configuring the port fowarding feature of that firewall.
A potentially 'big' problem though is whether or not your workplace will allow that kind of traffic out of their network. This would be something you'd need to discuss with them first.