On Tue, Apr 09, 2002, Eli Marmor wrote about Re: OT: Transparent Proxies in Israel:
Also Cache-control: no-store (or at least no-cache).
I already mentioned HTTP headers in this thread.
But I haven't thought about REQUEST headers, only RESPONSE headers.
However, implementing request headers
Internet Zahav also employs a transparent proxy:
alexsh@debian:~$ telnet www.cnn.com 80
Trying 64.236.16.84...
Connected to wwwc.cnn.com.
Escape character is '^]'.
HEAD / HTTP/1.0
HTTP/1.0 200 OK
Date: Tue, 09 Apr 2002 08:53:00 GMT
Content-Length: 0
Content-Type: text/html
Expires: Tue, 09 Apr
On Tue, 9 Apr 2002, Sagi Bashari wrote:
From: Nadav Har'El [EMAIL PROTECTED]
On Tue, Apr 09, 2002, Eli Marmor wrote about Re: OT: Transparent Proxies
in Israel:
But back to the original question: Can anybody list the ISP's that
don't use transparent proxies, even not for ADSL users who
Eli Marmor wrote:
Nadav Har'El wrote:
What if you use HTTP headers, like Pragma: no-cache (the simplest) or
If-Modified-Since: ? I don't know how to tell a browser like Mozilla
.
Also Cache-control: no-store (or at least no-cache).
I already mentioned HTTP headers in this
Alex Shnitman wrote:
Internet Zahav also employs a transparent proxy:
...
(We're connected via ADSL.)
However, Israeli sites don't seem to be routed via that proxy.
Great.
This is exactly the type of answers that I looked for.
I appreciate the willingness of everybody here to help, and
I'll leach this thread to reiterate an amusing problem I've had
(actually, a friend of mine at work) with transparent proxies.
I'll give you the rundown after investigation. We both read the
Userfriendly comic strip (http://www.userfriendly.org/static). Their
site uses Apache with mod_gzip
If you want to be picky about it it actualy happens in every
israeli universaty that is connected through macba
Ely Levy
System group
Hebrew University
Jerusalem Israel
On 8 Apr 2002, Oleg Goldshmidt wrote:
Geoffrey S. Mendelson [EMAIL PROTECTED] writes:
Eli Marmor wrote:
The
Recently, with the ADSL (and now also CATV) connections in Israel, the
ISP's found themselves in a strange status: The ratio between the
total bandwidth of their users, and the bandwidths of the ISP's to
abroad (and even between themselves), is higher than ever.
Upgrading the connections,
The best way to check transparent proxying is to make a webserver that
serves dynamic content (such as a counter) but without the Pragma: No-Cache
header, thus asking to be cached. This should be made both on IIX and
abroad.
Then the robot should to the following:
1. Request the page and
Eli Marmor wrote:
The solution of some ISP's was simple: They route all your traffic
through transparent caching proxies.
Is this a real problem or just FUD. When I was at Hebrew U (CS institute)
(96-98) and since I have been here, we have always run web proxies.
AFIK Netvision has run one
Geoffrey S. Mendelson [EMAIL PROTECTED] writes:
Eli Marmor wrote:
The solution of some ISP's was simple: They route all your traffic
through transparent caching proxies.
it never caused any complaints.
Hi Geoff,
If I understood Eli correctly, it causes problems when you need to
Geoffrey S. Mendelson wrote:
...
As a DEVELOPER of proxies, I'm aware of the advantages of proxies, and
you don't have to convince me.
But as a developer of proxies, I also know quite well their
disadvantages, especially when they are transparent, without giving any
choice to the user, and
Oleg Goldshmidt wrote:
If I understood Eli correctly, it causes problems when you need to
upload to a remote site and are routed to your ISP's transparent proxy
instead.
That definately would cause a problem. But I have never heard of it being
done, I've only heard of upgrading web pages,
Geoffrey S. Mendelson wrote:
Oleg Goldshmidt wrote:
If I understood Eli correctly, it causes problems when you need to
upload to a remote site and are routed to your ISP's transparent proxy
instead.
That definately would cause a problem. But I have never heard of it being
done,
Eli Marmor wrote:
But you can't test them, because your browser keeps showing the old
content.
Sometimes you can prevent caching by HTTP headers.
This sounds like a local cache setting problem. Make sure you set local
cache to check every time.
Try SHIFT-RELOAD (hold down shift and click
Eli Marmor wrote:
(of course, reverse proxies are
a different issue, have many advantages, and almost no disadvantage).
Great. What are they?
Shachar
=
To unsubscribe, send mail to [EMAIL PROTECTED] with
the
Geoffrey S. Mendelson wrote:
Eli Marmor wrote:
But you can't test them, because your browser keeps showing the old
content.
Sometimes you can prevent caching by HTTP headers.
This sounds like a local cache setting problem. Make sure you set local
cache to check every time.
Try
Hi
I would like to point you to:
http://www.mnot.net/cache_docs/
Arie
-Original Message-
From: Eli Marmor [mailto:[EMAIL PROTECTED]]
Sent: Monday, April 08, 2002 8:38 PM
To: [EMAIL PROTECTED]
Subject: Re: OT: Transparent Proxies in Israel
Geoffrey S. Mendelson wrote
On Mon, Apr 08, 2002, Eli Marmor wrote about Re: OT: Transparent Proxies in Israel:
As I wrote in a previous message, I not only reload, but also clean
all the cache any time to ensure that nothing survived in the local
browser since the previous time.
With all the honor to proxies
Nadav Har'El wrote:
What if you use HTTP headers, like Pragma: no-cache (the simplest) or
If-Modified-Since: ? I don't know how to tell a browser like Mozilla
to use such a header (I would have thought they'd do it when you hit
shift-reload...), but you can easily do it with wget or curl
On Mon, 8 Apr 2002, Eli Marmor wrote:
But as a developer of proxies, I also know quite well their
disadvantages, especially when they are transparent, without giving any
choice to the user, and when any type of site must pass them, no matter
if it uses things that are problematic for a
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