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If a computer gets infected with malware, can the host firewall block the malware from communicating back to its controller on the internet?

Çağlar Arlı      -    5 Views

If a computer gets infected with malware, can the host firewall block the malware from communicating back to its controller on the internet?

I'm trying to figure out how secure a host firewall is, hence the question in the title. I read that many firewalls allow outbound connections to port 80 to allow browsing, would that be enough for the malware to communicate to the controller? would it be possible with tunneling? This would allow me to carry with HTTP a second protocol that used alone would be disallowed by firewall policy.