[Sderby] squid proxy servers?

Fri Feb 14 10:08:01 2003

Hello,
Thanks for the resposne, your right the request itsn't enough information, I
guess a proxy server isn't enough.
The two browsers option, might well be the best solution, one of them could
be a download manager of some kind so it wouldn't be all that strange to the
users.

The satalite link does have pretty high latency, about 500ms each way, but
thats not the cause of the trouble here (its insignificant if your
downloading linux isos). Its quite an odd system, the satalite router has a
proxy of its own, which you must use, if you don't you allways get very slow
speeds. I had supposed that the proxy reformats the data in some way, to
make it more appropriate for the way the satalite system works. It works
really well with one connection at a time, but multiplexing a connection
allways seems to make it painfully slow.
NTL do sell in this area, but not to bisnesses. It doesn't matter how much
money you threaten to pay them, they just wont do it. They actually dug up
the pavement infront of us to put some cables in, and then dont sell to us!
Its a bit bad, instead of going three feet through the ground our data goes
55000km to geostationry orbit and back!

Thanks,
Graeme.
----- Original Message -----
From: <RogerCW1@netscape.net>
To: <sderby@mailman.lug.org.uk>
Sent: Friday, February 14, 2003 9:12 AM
Subject: Re: [Sderby] squid proxy servers?

> Hi there
>
> the problem with requests is - its just a request,  the proxy doesn't know
how large the response is going to be.
>
> Directing requests via a secondary outbound connection can be achieved by
using two web browsers with different proxy settings.  Then its up to the
user to decide whats big and what isn't and use the appropriate browser.
>
> I've not thought or seen an automated way to do this..
>
> One of the reasons the satellite link may slow down is latency,  the
inherent delays in the exchange of packets over the connection.  I don't
know what the capacity of the downlink from the satellite actually is,  but
with only four concurrent connctions it sounds odd that it should slow to a
crawl.
>
> If you are in a village and can get NTL broadband then hiding all your
devices behind a proxy or linksys router as Ashley describes works and NTL
will have no idea how many devices you have hidden behind it.
>
>
> "Graeme Phillipson" <graeme@charndyn.com> wrote:
>
> >Hello,
> >I've already set up NAT with a firewall, you get static 'real' ips with
the
> >satalite, so it would be a bit of a security risk not to use it. Didn't
use
> >linux though, linksys make a router for home networks which is only 60
quid,
> >so it was cheaper than a second hand box to run linux on. I've got a box
> >which I can use to run a proxy on, and the idea was that would do the
> >sorting , big filkes over satalite small ones over ISDN.
> >I've been looking into squid, and I cant really see any way of doing this
> >myself myself.
> >
> >However, I know some ISPs use a 'transparent proxy' where the router
> >redirects everything to the proxy, does anyone know how to do this, I was
> >thinking I could redirect everything to a webserver, adn write a python
> >script to do the job. I'm not very familer with messing with routing,
above
> >setting up NAT (and I usually use nice graphical tools to do that). Does
> >anyone know much about that?
> >
> >Thanks,
> >Graeme.
> >
> >----- Original Message -----
> >From: "Ashley Heath" <aheath@clikmail.net>
> >To: <sderby@mailman.lug.org.uk>
> >Sent: Monday, February 10, 2003 6:12 PM
> >Subject: Re: [Sderby] squid proxy servers?
> >
> >
> >> Hi Graeme,
> >>
> >> Not sure if squid could do what you ask, haven't gone into that much
> >detail with it, but would be interesting to know if it could do it.
> >>
> >> Depending on what you want to achieve, if you have a spare box you
could
> >>
> >> a. configure it with squid and proxy all http/ftp requests through it
> >> b. set up IP forwarding and use NAT
> >> c. both of the above
> >>
> >> This will allow you to hide all other computers on your network, it
will
> >appear as if all requests originate from the same machine, keeping you
below
> >the limit.
> >>
> >> Ash
> >>
> >> On Mon, 10 Feb 2003 12:04:35 -0000
> >> "Graeme Phillipson" <graeme@charndyn.com> wrote:
> >>
> >> > Hello All,
> >> > I've not posted to this list before, so I suppose I should introduce
> >myself.
> >> > I use linux at work (www.codamotion.com), but as a programmer, not a
> >system
> >> > adminisrator. However I get roped into that all the time.
> >> > We've been struggling getting a BT openworld satalite connection to
work
> >> > (we're in a little village, no adsl, and ntl won't sell to bisnesses
> >here).
> >> > It says it only supports 4 computers, and it would appear they
*really*
> >mean
> >> > it. I thought maybe it would only be for support purposes, but if you
> >make
> >> > more than 4 simutaions connections the speed of all of them drops to
> >around
> >> > 0.3Kbs.
> >> > I'm wondering if it would be possible to configure squid to forward
> >requests
> >> > differently depending on size, small requests would go over our ISDN
> >line,
> >> > and big (say <500KB) would get forwarded to the proxy box that BT
have
> >> > provided. Has anyone tried to do anything like that before?
> >> > Any help would be appreciated.
> >> > Thanks,
> >> > Graeme Phillipson.
> >> >
> >> >
> >> >
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> >>
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