Configuration Manual
|
Squid 2.4 Stable1 Configuration Manual |
|
|
| Previous |
Tag Name |
http_port |
|
Usage |
http_port port Hostname: port 1.2.3.4 : port |
|
| Description | ||
This tag name is used to specify the socket addresses where Squid will listen for HTTP client requests. Multiple socket addresses can be specified. There are three forms: port alone, hostname with port, and IP address with port. If hostname or IP address are specified, then Squid binds the socket to that specific address. This replaces the old ‘tcp_incoming_address’ option. Most likely, no need to bind to a specific address, so canuse the port number alone. If you are running Squid in accelerator mode, then you probably want to listen on port 80 also, or instead. |
||
Default |
http_port 3128 |
|
Example Give the port number in which you want squid to listen to http client requests. Like... http_port 8080 We can override the default port number by –a command line option. #/usr/local/squid/bin/squid –a 8080 This will start squid with port 8080, which overrides the port number in squid.conf. However this option cannot be used to override IP address |
||
Caution Before changing the port number, make sure no application in your box is running in the same port |
||
Note http_port can be used to specify the tcp_incoming_address through whichthe cache listens to requests from other remote servers. http_port can belisted multiple times. |
||
Tag Name |
icp_port |
|
Usage |
icp_port port |
|
Description |
||
Thisspecifies the port number from which Squid sends and receives ICP queriesto and from neighbor caches. To disable “0” is used. ICP is a protocol used for communication among squid caches. ICP is primarily used within a cache hierarchy to locate specific objects in sibling caches. If a squid cache does not have a requested document, it sends an ICP query to its siblings, and the siblings respond with ICP replies indicating a ``HIT'' or a ``MISS.'' The cache then uses the replies to choose from which cache to resolve its own MISS. ICP is currently implemented on top of UDP. Squid also supports ICP via multicast. |
||
Default |
icp_port 3130 |
|
Example The port number is given in which squid has to send and receive ICP queries from neighbor caches. Like... icp_port 5050 May be overridden by –u command line option. #/usr/local/squid/bin/squid –u 5050 This will start squid with port 5050, which overrides the port number in squid.conf |
||
Caution Before changing this port number, make sure no application in the box is running in the same port |
||
Tag Name |
htcp_port |
|
Usage |
htcp_port port |
|
Description |
||
Used to specify the port number through which Squid sends and receives ICP queries to and from neighbor caches. To disable “0” is used |
||
Default |
htcp_port 4827 |
|
Example |
htcp_port 5089 |
|
Caution To enable this option, “--enable-htcp” is used with the configure script |
||
Tag Name |
mcast_groups |
|
Usage |
mcast_groups IPAddress |
|
Description |
||
|
Multicast is essentially the
ability to send one IP packet to multiple receivers. Multicast is
often used for audio and video conferencing systems. If you are unsure
about multicast, please read the Multicast chapter in the Squid FAQ
(http://squid.nlanr.net/Squid/FAQ/). |
||
Default |
none |
|
| By default, Squid doesn't listen on any multicast groups | ||
Example mcast_groups 239.128.16.128 224.0.1.20 |
||
Caution Should not use a multicast address, which is already in use by another group of caches. We should not set this option to SEND multicast ICP |
||
Tag Name |
tcp_outgoing_address |
|
Usage |
tcp_outgoing_address IPAddress |
|
Description |
||
It is used for connections made to remote servers. It is also used to communicate with other caches while using HTCP or CARP. Normally tcp_outgoing_address should not be specified. It is better to let the OS select a suitable address. There are some very specific network configurations where tcp_outgoing_address needs to be specified |
||
Default |
tcp_outgoing_address 255.255.255.255 |
|
Note The tcp_incoming_address can be specified using http_port |
||
Example |
- |
|
Default |
- |
|
Tag Name |
udp_incoming_address |
|
Usage |
udp_incoming_address IPAddress |
|
Description |
||
It is used for the ICP socket receiving packets from other caches. |
||
Default |
udp_incoming_address 0.0.0.0 |
|
Caution |
- |
|
Tag Name |
udp_outgoing_address |
|
Usage |
udp_outgoing_address IPAddress |
|
Description |
||
It is used for the ICP packets sent out to the caches. |
||
Default |
udp_outgoing_address 255.255.255.255 |
|
Caution |
- |
|