HTTPS, port 443 & firewall

[Paul Wallace <pa...@isell.com.au>]

Hi,
	For HTTPS must port 443 be open on a firewall, or is traffic
sent/received on port 80 (or defined HTTP port) and redirected
internally? Do 'standard' firewalls leave open this port by default?

Thanks

Paul. 

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Re: HTTPS, port 443 & firewall

[Parsons Technical Services <pa...@earthlink.net>]

Port 443 must be opened on the firewall. When a browser uses https it is 
talking on port 443 and not 80.

The redirect is telling the browser to call back on port 443 or whatever 
port is designated as https, and not a transfer.

Although https can be defined to run on port 80 or any port you like, but 
that is another issue.

Most firewalls do not by default leave any ports open. It is up to whom ever 
set up the firewall as what ports are open if any.

Some firewalls have the standard list of ports, including 443, listed in the 
setup but usually as a prompt to the installer as to whether the port is to 
be open.

One question, are you talking about a personal firewall, like Windows, 
ZoneAlarm, Blackice or separate units like a Pix, Linksys or Router type.

Most personal units (Windows based) will detect the services running on your 
machine and ask you or set them up for you. Most separate units and Linux , 
iptables ipchains, have to be told to open the ports.

Doug


----- Original Message ----- 
From: "Paul Wallace" <pa...@isell.com.au>
To: "Tomcat Users List" <to...@jakarta.apache.org>
Sent: Monday, March 07, 2005 12:56 AM
Subject: HTTPS, port 443 & firewall


Hi,
For HTTPS must port 443 be open on a firewall, or is traffic
sent/received on port 80 (or defined HTTP port) and redirected
internally? Do 'standard' firewalls leave open this port by default?

Thanks

Paul.

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