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What is Dstdomain in Squid?

What is Dstdomain in Squid?

The dstdomain means to search the hostname in the URL for the string “” Note that when IP addresses are used in URLs (instead of domain names), Squid may have to do a DNS lookup to determine whether the ACL matches: If a domain name for the IP address is already in the Squid’s “FQDN cache”, then …

How do I configure Squid conf?

Install Proxy Server: Squid Proxy

  1. Step1: Update the server sudo yum update -y.
  2. Step 2: Configure EPEL repo.
  3. Step 3: Install squid sudo yum -y install squid.
  4. Step 4: Start and enable squid server.
  5. Step 5: Check the status of squid server.
  6. Step 1: Install httpd-tools sudo yum -y install httpd-tools.

How does an ACL Squid work?

It works similar to the way a firewall would handle rules. For each request that Squid receives it will look through all the http_access statements in order until it finds a line that matches. It then either accepts or denys depending on your setting. The remaining rules are ignored.

How do I allow a single site on Squid?

  1. Smart answer! I would like to add: change to acl allow url_regex AND change to http_access allow ipranges allow To allow only these site to the IP given. ( reverse) – Tarik.
  2. After revisiting this question. I noticed your comment is more suitable to OP question. =P. – Cleber Reizen. Sep 2, 2017 at 0:23.

What is ACL in Squid Proxy?

The access control scheme of the Squid web proxy server consists of two different components: The ACL elements are directive lines that begin with the word “acl” and represent types of tests that are performed against any request transaction.

What does Tcp_denied mean?

TCP_DENIED/403 Code resulting from the transaction. This field consists of two entries separated by a slash: the Squid status code and the HTTP code corresponding to the response from the original server. Most of these codes are explained in further detail below.

What is Squid proxy configuration?

What is Squid proxy: A proxy is a server located between two networks; in this case, the most common implementation of a Squid proxy is the division between user computers and devices and the internet, divided or separated by a proxy server in the middle.

How do I check my squid proxy settings?

Configure browser to use Squid proxy First, check to see if your browser has a proxy configuration setting, usually located within the networking section of the configuration menu. Enter the IP address or hostname and the port of your Squid server to have your network traffic routed through the proxy.

What are the important ACL elements in Squid?

ACL elements are the building blocks of Squid’s access control implementation. These are how you specify things such as IP addresses, port numbers, hostnames, and URL patterns. Each ACL element has a name, which you refer to when writing the access list rules.

How do I block a website on squid proxy?

3 Answers

  1. open this file /etc/squid3/squid.conf.
  2. add these lines: acl bad_url dstdomain “/etc/squid3/bad-sites.acl” http_access deny bad_url.
  3. then go to /etc/squid3/bad-sites.acl and add domains with this format

What is TCP NC miss?

TCP_MISS – Object not found in cache, downloaded from the OCS. TCP_HIT – Object found in cache. TCP_NC_MISS – The request was made for an object that can’t be cached.

Does squid warn you when a specific configuration is used?

Squid-2.4 and later will warn you when this kind of configuration is used. If your Squid does not warn you while reading the configuration file you do not have the problem described below.

Should I allow squid to connect to certain port numbers?

It is dangerous to allow Squid to connect to certain port numbers. For example, it has been demonstrated that someone can use Squid as an SMTP (email) relay. As I’m sure you know, SMTP relays are one of the ways that spammers are able to flood our mailboxes.

Why does squid use GMT as timestamp in error messages?

Squid, by default, uses GMT as timestamp in all generated error messages. This to allow the cache to participate in a hierarchy of caches in different timezones without risking confusion about what the time is.

What are the different components of squid’s access control?

Squid’s access control scheme is relatively comprehensive and difficult for some people to understand. There are two different components: ACL elements, and access lists. An access list consists of an allow or deny action followed by a number of ACL elements.