Counter-Strike

Hey guys i'm playing counterstrike source at my house and whenever i refresh my server list i get a list of about 40 and if i let it refresh for like 3 mins i might just get to a list with 100 servers. I'm doing a search with absolutly no restrictions not even a specific map just any server at all. The only problem is that when i go somewhere on vacation or even to a friends house and we use a different router my steam list instantly shoots up to like a hundred and then increases in like increments of fifty until about like 600 servers in a minute. I'm pretty sure that when i'm at my house either my router and/or firewall is restricting alot of servers from appearing. I was wondering if someone could help me out in like how i have to reconfigure my router or firewall or something that'd be great! of coursei  might be totally wrong and it could be something else. Any help at all would be incredibly appreciated. Thanks 4chan!!

If you're using a cracked version of counterstrike you won't find more than a few servers. If its legitimate you can try opening your Firewall configurations and allow steam to connect to the internet.