Hi. I have D-Link router and two computers that connect to internet through this router. I have installed Zone Alarm 5 firewall on one computer and now I am not able to connect neither to router nor to another computer. I would really appreciate if you could help me to solve this problem. Thank you in advance.
Zone Alarm 5 is one of the worst firewall that is ever made. It is so buggy that you can write a book from forum posts where people are searching for help with this software. You can try to open ports I firewall, but the best option you have is to get rid of Zone Alarm and install some other firewall because it will make you trouble in the future, too. Besides, I do not think you actually need software firewall when you have a router. If properly configured hardware firewall is better then software one.