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authorTimothy Pearson <kb9vqf@pearsoncomputing.net>2013-01-27 01:04:16 -0600
committerTimothy Pearson <kb9vqf@pearsoncomputing.net>2013-01-27 01:04:16 -0600
commit5159cd2beb2e87806a5b54e9991b7895285c9d3e (patch)
tree9b70e8be47a390f8f4d56ead812ab0c9dad88709 /kio/misc/kpac/README.wpad
parentc17cb900dcf52b8bd6dc300d4f103392900ec2b4 (diff)
downloadtdelibs-5159cd2beb2e87806a5b54e9991b7895285c9d3e.tar.gz
tdelibs-5159cd2beb2e87806a5b54e9991b7895285c9d3e.zip
Rename a number of libraries and executables to avoid conflicts with KDE4
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-Web Proxy Auto Discovery (WPAD)
-===============================
-
-This README is intended for network administrators who want to enable the
-users on their network to fully automatically find the proxy settings.
-
-Automatic proxy discovery works in two steps:
-1) Find a configuration script
-2) Determine a proxy to use by running that script
-
-The configuration script is a "PAC" (JavaScript) file just as in plain Proxy
-Auto Configuration as described here:
-http://home.netscape.com/eng/mozilla/2.0/relnotes/demo/proxy-live.html
-
-The WPAD part of the process (#1 above) described here is about how to find
-this script without having the users enter its URL into the proxy settings.
-(All they have to do in a WPAD-enabled network is to select "Automatically
-detected script file" in KDE's proxy setup.
-
-There are two alternative ways to discover the PAC script's URL implemented
-in KDE:
-
-1. DHCP based autodiscovery
-
- If you are running a DHCP server on your network anyway, you might
- want to use this approach; all you have to do is to add the WPAD
- option (numeric 252 or hex fc) as a string containing the URL to the
- PAC script.
-
- To do so with older versions of ISC dhcpd, add this to
- /etc/dhcpd.conf, either globally or just for the subnets you want to
- enable WPAD for:
-
- option option-252 "http://example.com/path/to/proxyconfig.pac";
-
- Or, for newer ISC dhcpd versions, add this globally:
-
- option wpad code 252 = text;
-
- and this either globally or for the WPAD subnets:
-
- option wpad "http://example.com/path/to/proxyconfig.pac";
-
- For other DHCP servers, please consult the reference manual on how
- to add an option by number if WPAD support is not built-in.
-
-2. DNS based autodiscovery
-
- If you don't run a DHCP server or prefer DNS based discovery, you
- need to configure one of your hosts to have the name
- wpad.example.com and make sure the PAC script is available as
- http://wpad.example.com/wpad.dat If your network consists of several
- subdomains, like a.example.com and b.example.com you can either
- provide both http://a.example.com/wpad.dat and
- http://b.example.com/wpad.dat or just http://example.com/wpad.dat
- When a client searches for that script, it will search for a host
- named "wpad" in its own domain, then in the next higher level domain
- until success or if only the TLD is left (i.e. wpad.com will never
- be tried)
-
-Note that DHCP is the preferred approach since it's more flexible than DNS
-as it doesn't require a well known host name nor a fixed location
-(/wpad.dat) for the PAC script. It is also the first method tried before
-resorting to DNS, so if you use DNS there will be a noticeable delay of 5
-seconds while waiting for a DHCP reply.
-
-However, DHCP requires a helper program, kpac_dhcp_helper to be installed
-suid root. If you consider this a security problem, just delete that program
-or remove its suid permissions and use DNS instead. If the helper cannot
-execute as root, the 5 seconds delay will also go away.
-
-If you have further questions or comments, please contact me: Malte
-Starostik <malte@kde.org>