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Frequently Asked Questions

Can Squid listen on more than one HTTP port?

SQUID Frequently Asked Questions: Operational issues
Yes, you can specify multiple http_port lines in your squid.conf file. Squid attempts to bind() to each port that you specify. Sometimes Squid may not be able to bind to a port, either because of permissions or because the port is already in use. If Squid can bind to at least one port, then it will continue running. If it can not bind to any of the ports, then Squid stops. With version 2.3 and later you can specify IP addresses and port numbers together (see the squid.conf comments).

Can Squid anonymize HTTP requests?

SQUID Frequently Asked Questions: Configuration issues
Yes it can, however the way of doing it has changed from earlier versions of squid. As of squid-2.2 a more customisable method has been introduced. Please follow the instructions for the version of squid that you are using. As a default, no anonymizing is done. If you choose to use the anonymizer you might wish to investigate the forwarded_for option to prevent the client address being disclosed. Failure to turn off the forwarded_for option will reduce the effectiveness of the anonymizer.

What is the default HTTP port of OC4J?

Oracle Application Server Containers for J2EE 10g (9.0.4) --...
The default HTTP port of OC4J standalone is 8888. This is specified in the configuration file <J2EE_HOME>/config/http-web-site.xml. If you have installed one of the Oracle Application Server distributions instead of OC4J standalone, then you must access Web applications deployed on OC4J via Oracle HTTP Server. The default port of Oracle HTTP Server is 7777.

What is the http-port (http-admin-port) configuration option about?

Kannel: Open Source WAP and SMS Gateway
The http-port (now renamed as http-admin-port) is, as documentation/userguide tells, the port where Kannel listens for http-administration commands. So it is not linked to your Apache/whatever httpd, it simply uses the same protocol (HTTP). And as Kannel is not run as a 'root' program, this port number must be over 1024. Default is 13000, after which, for example, the status of Kannel can be checked this way: Those markings mean that you have ran into CVS conflict.

How can I listen on more than one port at a time?

Programming UNIX Sockets in C - Frequently Asked Questions: ...
The best way to do this is with the select() call. This tells the kernel to let you know when a socket is available for use. You can have one process do i/o with multiple sockets with this call. If you want to wait for a connect on sockets 4, 6 and 10 you might execute the following code snippet: fd_set socklist; FD_ZERO(&socklist); /* Always clear the structure first.

How do I setup a transparent proxy (using squid), and redirect all outgoing http-requests to this?

FIAIF is an Intelligent Firewall
In the zone from which the http requests originates, put in the line: 'REDIRECT_PROXY="tcp 80 0.0.0.0/0=>0.0.0.0/0 127.0.0.1 3128"' (Replacing 127.0.0.1 with th ip address of the server running the squid proxy, if not the same as the firewall). Then make sure you have the following settings in squid.conf: 'httpd_accel_host virtual', 'httpd_accel_port 80', 'httpd_accel_with_proxy on' and 'httpd_accel_uses_host_header on'.

What is Squid?

SQUID Frequently Asked Questions: About Squid, this FAQ, and...
Squid is a high-performance proxy caching server for web clients, supporting FTP, gopher, and HTTP data objects. Unlike traditional caching software, Squid handles all requests in a single, non-blocking, I/O-driven process. Squid keeps meta data and especially hot objects cached in RAM, caches DNS lookups, supports non-blocking DNS lookups, and implements negative caching of failed requests. Squid supports SSL, extensive access controls, and full request logging.

I know that HTTP is on port 80, but where is HTTPS?

Apache-SSL
You can run HTTPS on any port, but the standard specifies port 443, which is where any compliant browser will look by default. You can force your browser to look on a different port by specifying it in the URL like this: https://secure.server.hell:666

How do I change the HTTP port used by the OC4J HTTP listener?

Oracle Application Server Containers for J2EE 10g (9.0.4) --...
The port used by the OC4J HTTP listener is defined in the configuration file <J2EE_HOME>/config/http-web-site.xml file using the port attribute of the web-site tag. lt;web-site port="8888" display-name="Oracle Application Server Containers for J2EE HTTP Web Site">

Can I make the VNC server listen on a different port number rather than 5900?

RealVNC - Frequently asked questions
Yes. VNC Server for Windows Configuration allows the port numbers for VNC connections and for serving the Java Viewer to be configured. See the Connections Options section of the appropriate documentation. In Unix, you can specify it on the Xvnc or vncserver command-line.

How can I get Postfix to listen on a port other than 25?

Postfix FAQ
Set the port in an smtpd entry in the master.cf file. You can change the existing smtpd entry or add an additional one depending on what you need.

So...what's with all the squid?

The Other*Worlds*Cafe: Site: FAQ
Squid are the O*W*C's mascots! For more information about squid at the O*W*C, check out our Squid Page.

How can I easily change the default HTTP port?

SQUID Frequently Asked Questions: Configuration issues
Before you run the configure script, simply set the CACHE_HTTP_PORT environment variable. setenv CACHE_HTTP_PORT 8080 ./configure make make install

How do I configure the default HTTP port OC4J listens on?

The default port that the OC4J HTTP server listens on is configured in the $ORACLE_J2EE_HOME/config/defaut-web-site.xml file. The port number used for the HTTP server is specified as an attribute of the <web-site> tag.

What is ''HTTP_X_FORWARDED_FOR''? Why does squid provide it to WWW servers, and how can I stop it?

SQUID Frequently Asked Questions: Configuration issues
When a proxy-cache is used, a server does not see the connection coming from the originating client. Many people like to implement access controls based on the client address. To accommodate these people, Squid adds its own request header called "X-Forwarded-For" which looks like this: X-Forwarded-For: 128.138.243.150, unknown, 192.52.106.

Why is it called Squid?

SQUID Frequently Asked Questions: About Squid, this FAQ, and...
We needed to distinguish this new version from the Harvest cache software. Squid was the code name for initial development, and it stuck.

Who is responsible for Squid?

SQUID Frequently Asked Questions: About Squid, this FAQ, and...
Squid is the result of efforts by numerous individuals from the Internet community. Duane Wessels of the National Laboratory for Applied Network Research (funded by the National Science Foundation) leads code development. Please see the CONTRIBUTORS file for a list of our excellent contributors.

How do I make forrest run listen on a different port?

Frequently Asked Questions (v0.7)
Or copy Forrest's main/webapp/jettyconf.xml file to your project's src/documentation directory and set the port number in that file. Then do forrest run Certain patterns are claimed by the default sitemaps for special processing. These include: site, changes, todo, faq, images, my-images, skinconf, community, howto Sometimes there are workarounds, e.g. faq.html or faq-interview.html would fail, but interview-faq.html would be fine.
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