Firewall Ports

Question

I have no problems connecting to e-mail, Safari or any other wifi app on my work network. The problem is I cannot connect to YouTube, itunes store, or the app store on my work network. All apps and features work at home or on random wifi in the area. I would like to know what ports should be open on my firewall to allow the three non connectable apps.

Answer 1

ports can be set for inbound or outbound depending on any ACLs that may be in place. (you may need both in some circumstances)
generally speaking, on a firewall, to open a port means to open it for inbound traffic. (public users allowed access to your private network via that port)
if you have software inside your company that uses port 445 and it needs to talk to a device outside the firewall, be sure the firewall has outbound access for that port. (may require inbound as well if the external device needs to talk to port 445 back into your network)
if you have software outside your company that uses port 445 and it needs to talk to a device inside the firewall, be sure the firewall has inbound access for that port. (may require outbound as well if the internal device needs to talk to port 445 back out of your network)