February 2011
Intermediate to advanced
332 pages
9h 3m
English
Content preview from Squid Proxy Server 3.1: Beginner's GuideBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Time for action – building ACL lists using destination ports
So, we can use network port numbers to identify requests and then combine them with an access rule to control access to resources. Squid provides an ACL type port
, which can be used to declare one or more port numbers to construct an ACL. Let's see a simple example:
acl allowed_port port 80
The previous ACL will match any request for port 80 on the destination server requests. The ACL type port can take more than one port or a range of ports as an argument. So, if we want to assign multiple ports, we can list them as follows:
acl allowed_ports port 80 443 1025-65535
The ACL allowed_ports
will match all the requests requesting a connection to ports 80, 443, or any within the range of 1025 ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.