Subject:
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Re: slow server startup
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Newsgroups:
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lugnet.admin.general
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Date:
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Wed, 17 Apr 2002 21:48:55 GMT
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Viewed:
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289 times
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"Dan Boger" <dan@peeron.com> wrote in message
news:20020417201416.GS6127@peeron.com...
> On Wed, Apr 17, 2002 at 07:29:42PM +0000, Carlo Ottolina wrote:
> > the server is *not* doing auth right now.
> > (Please, see: http://news.lugnet.com/admin/nntp/?n=1052)
> > This is an exerpt from my network analyzer output: (sorry for the • wrapped
> > lines..)
> > As you can see, there is only one TCP stream, and *no* auth requests • (port
> > 113).
>
> that actually proves my point... the server _is_ doing auths (I could
> show you my firewall logs)... the fact that they don't get to your
> firewall could explain part of the problem. I'm assuming that you get
> the delay before nntp works right?
>
> imagine this:
>
> - you try to connect to nntp
> - the server sends an auth to you
> - some computer on the way (your ISP, their backbone, someone) is
> dropping the auth request
> - you don't see any auth
> - the server waits 90 seconds before timeing out on the auth
> - nntp communication begins
>
> that's one way of explaining things... and at this point, it fits all
> the facts I have.
That sounds feasible, except for one thing - I run Outpost on my PC which
logs all allowed and denied connections in and out, and I don't see any auth
requests being logged. I also have auth incoming disabled in the settings,
so if your assumption were true I should also get a delayed connection -
I've just connected from a fresh boot after my PC being off for about 12
hours, and it took about 3 seconds for the connection to be established and
another 3-5 seconds to get all the new headers for admin.general. I'm on
ADSL which would account for the speed of getting the headers, but the auth
delay of around 30-60 seconds is normally down to the TCP standard timeout
of 30 seconds plus packet round trip times, and I'm definitely not seeing
that here.
If you're seeing auth's in your firewall log that suggests that your news
access is being proxied by something in the middle - could your ISP be
running a "transparent" NNTP proxy on their network? Then again I guess the
same could be said of mine, where my ISP could be running a "transparent"
proxy and handling the auths for me without my PC ever seeing them. Only
someone with access to packets at both your end and the server, or my end
and the server, would be able to answer that.
Dan
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Message has 2 Replies:
 | | Re: slow server startup
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| "Daniel Crichton" <danielc@helio.co.uk> wrote in message news:GuqF5w.AoC@lugnet.com... (...) auth (...) and (...) auth (...) the (...) I agree. I don't have any ISP (I mean I *am* the ISP) and so I can safely exclude the second option. This leave (...) (23 years ago, 17-Apr-02, to lugnet.admin.general)
| | | Re: slow server startup
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| (...) not likely that I have a transparent proxy at the ISP level, but it is possible, of course. I do think it's more likely that some network is automatically responding to all auth requests than some network sending auth requests where there were (...) (23 years ago, 18-Apr-02, to lugnet.admin.general)
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Message is in Reply To:
| | Re: slow server startup
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| (...) that actually proves my point... the server _is_ doing auths (I could show you my firewall logs)... the fact that they don't get to your firewall could explain part of the problem. I'm assuming that you get the delay before nntp works right? (...) (23 years ago, 17-Apr-02, to lugnet.admin.general)
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