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16.5. Configuring the Squid Service to Listen on a Specific Port or IP Address
By default, the Squid proxy service listens on the
3128 port on all network interfaces. This section describes how to change the port and configuring Squid to listen on a specific IP address.
Prerequisites
- Squid is installed.
Procedure
- Edit the
/etc/squid/squid.conffile:- To set the port on which the Squid service listens, set the port number in the
http_portparameter. For example, to set the port to8080, set:http_port 8080
- To configure on which IP address the Squid service listens, set the IP address and port number in the
http_portparameter. For example, to configure that Squid listens only on the192.0.2.1IP address on port3128, set:http_port 192.0.2.1:3128
Add multiplehttp_portparameters to the configuration file to configure that Squid listens on multiple ports and IP addresses:http_port 192.0.2.1:3128 http_port 192.0.2.1:8080
- If you configured that Squid uses a different port as the default (
3128):- Open the port in the firewall:
# firewall-cmd --permanent --add-port=port_number/tcp # firewall-cmd --reload
- If you run SELinux in
enforcingmode, assign the port to thesquid_port_tport type definition:# semanage port -a -t squid_port_t -p tcp port_number
If thesemanageutility is not available on your system, install the policycoreutils-python-utils package.
- Restart the
squidservice:# systemctl restart squid
