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:
> >
>
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 ins
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,
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 h
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&
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 2
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
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 RESPO
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 p
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
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
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
>
>
> Geo
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 ever
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 w
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 c
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
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:
> ...
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 wh
"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
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 on
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 store
Eli Marmor <[EMAIL PROTECTED]> writes:
> Let's build a simple table that will map the use of transparent proxies
> by the various ISP's:
There used to be a "comparison table" of Israeli ISP's some years
ago. I have long since lost the URL, and the criteria for comparison
were relevant for that p
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, especia
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