RE: MSProxy talking to Squid?

In short, it is possible. I don't think MS Proxy actually speaks ICP, but
you can get it to forward web requests to upstream non-MS proxies. Relevant
info from MS Proxy docs follows.

Vince Romeo, Systems Manager
Madison Academy
vjromeo@bigfoot.com

From the MS Proxy docs:

Configuring Proxy Server Routes
You can administer Proxy Server routes from the Web Proxy service. Web Proxy
client requests can be routed within an array, to an upstream Proxy Server
or Proxy Server array, or directly to the Internet. Client requests can also
be resolved first within an array before routing the request upstream.

The routing algorithm automatically detects the operating status of the
Proxy Server computer in the upstream chained configuration. In addition,
array membership changes can be detected, both within an array or upstream.
If you are not using the Web Proxy service, upstream routing should be
disabled.

Note Only Web Proxy client requests can be routed through chained Proxy
Server computers or Proxy Server arrays. The WinSock Proxy and Socks Proxy
services do not support chained requests.

Upstream Routing
You can route a Web Proxy client request upstream to a Proxy Server
computer, Proxy Server array, or directly to the Internet. If you are
routing to an upstream Proxy Server computer or Proxy Server array, you can
use authentication.

You can specify a backup or alternate route if a chained computer is
unavailable or malfunctioning. This provides an automatic transfer, thereby
eliminating a single point of failure. The backup route is fully functional
and supports all routing configurations that the primary route supports.
After switching to the backup route, the unresponsive Proxy Server computer
is queried until it's available again, at which time the primary route is
automatically reestablished.

The following procedure configures the primary upstream routing properties
used under normal conditions. You can also configure a backup route if a
client request cannot be successfully routed by using the primary route.
After configuring the upstream routing properties, you should next define
the primary upstream route by clicking Modify.

To configure upstream routing properties
In Internet Service Manager, double-click the computer name next to the Web
Proxy service.
In the Web Proxy Service Properties dialog box, click the Routing tab.
Under Use this Http Via Header alias for the local server, enter a valid
computer name that will be used in the HTTP header for all requests.
Under Upstream Routing, do one of the following:
To route all Web Proxy client requests directly the Internet, click Use
direct connection.
To route all Web Proxy client requests upstream to another Proxy Server
computer or array, click Use Web Proxy or array.
To use a backup upstream route, verify that the Enable backup route check
box is selected, and do one of the following:
To route all Web Proxy client requests directly the Internet, click Use
direct connection.
To route all Web Proxy client requests upstream to another Proxy Server
computer or array, click Use Web Proxy or array.
Click Apply, and then click OK.
You can use the following procedure to configure the primary upstream route.
You can enable automatic polling of upstream Proxy Server computers for
their array membership information. You can also set user credentials for
upstream routing. This means you can create Proxy Server-to-Proxy Server
authentication credentials from a downstream Proxy Server computer to an
upstream Proxy Server computer.

Note The array URL is automatically generated from the Proxy Server
computer name you type. You are not required to change this URL if the
upstream computer is running Microsoft Proxy Server Version 2.0.

To configure the primary upstream route
In Internet Service Manager, double-click the computer name next to the Web
Proxy service.
In the Web Proxy Service Properties dialog box, click the Routing tab.
Under Upstream Routing, verify that the Use Web Proxy or array option is
selected, and then click Modify.
In the Advanced routing options dialog box, under Upstream Web Proxy Server,
in Proxy, type a valid server name or array name, and in Port, type a valid
port number (usually port 80).
Verify that the Auto-poll upstream proxy for array configuration check box
is selected, and then select the Use credentials to communicate with
upstream proxy/array check box.
In Username, type a valid user name, and in Password, type a valid password.
To enable basic authentication, click Allow basic/clear text authentication.
To enable Windows NT challenge/response authentication, click Allow
encrypted authentication (NT CR).
Click OK, click Apply, and then click OK again.
You can use the following procedure to configure a backup upstream route if
the primary route fails. You can enable automatic polling of upstream Proxy
Server computers for their array membership information. You can also set
user credentials for upstream routing. This means you can create Proxy
Server-to-Proxy Server authentication credentials from a downstream Proxy
Server computer to an upstream Proxy Server computer.

Before you can configure a backup upstream route, you must first configure a
primary upstream route to connect to a chained upstream Proxy Server
computer or array.

Note The array URL is automatically generated from the Proxy Server
computer name you type. It is recommended that you do not change this URL.
You are not required to change this URL if the upstream computer is running
Microsoft Proxy Server Version 2.0.

To configure the backup upstream route
In Internet Service Manager, double-click the computer name next to the Web
Proxy service.
In the Web Proxy Service Properties dialog box, click the Routing tab.
Under Upstream Routing, verify that the Enable backup route check box and
the corresponding Use Web Proxy or array option are both selected, and then
click Modify.
In the Advanced routing options dialog box, under Upstream Web Proxy Server,
in Proxy, type a valid server name or array name, and in Port, type a valid
port number (usually port 80).
Verify that the Auto-poll upstream proxy for array configuration check box
is selected, and select the Use credentials to communicate with upstream
proxy/array check box.
In Username, type a valid user name, and in Password, type a valid password.
To use basic authentication, verify that Allow basic/clear text
authentication is selected.
To enable Windows NT challenge/response authentication, click Allow
encrypted authentication (NT CR).
Click OK, click Apply, and then click OK again.

> -----Original Message-----
> From: Bill Wichers [mailto:billw@unix0.waveform.net]
> Sent: Wednesday, March 10, 1999 12:26 PM
> To: squid-users@ircache.net
> Subject: MSProxy talking to Squid?
>
>
> I know this has been asked before, and I'm sure I've even seen it, but now
> I need the info and the searchable archive is down! Spare a moment and
> give me a quick email reply and I'd really appreciate it!
>
> All I need to know is if it is possible to get an MSProxy box to talk to
> use a Squid box as a parent. I think this is no problem, but MS's site
> says absolutly nothing about using their proxy with anyone else's proxy.
> They also don't say anything about ICP and such, if it even supports it. I
> know they use CARP between other MSProxy boxes.
>
> TIA
>
> -Bill
>
Received on Wed Mar 10 1999 - 12:46:55 MST