Proxy/Firewall question


Please see attached my diagram.

PC connects to proxy server via ASA1.
On ASA1 only port 3128 is open to proxy server and from proxy server to internet via ASA2 all ports are open. (Permit ip any any).

My question is when I use software like Skype/click webinar via proxy I don’t have to open any additional port on ASA1 as long port 3128 is open for proxy as all my applications must go via proxy.

Is this correct
Please Advice
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That is correct you should not have to as long as you're initiating the connection and all traffic is going out via the proxy.

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ciscosuppAuthor Commented:
so traffic like e.g. http, https is tunneled to proxy via port 3128 please advice or how does http, https traffice reach proxy when on port 3128 is open to proxy
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