Gmail won't open

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hello,
i'm having troubles opening my Gmail account (mail.google.com). it gives me a

Failed to open
though the site seems valid, the browser was unable to establish a connection

etc..

i've been trying with Seamonkey, Dillo, Firefox 2.0.0.1, and Elinks ... no way

so, for now i have to start Windows for checking my mails

also, the way i connect is a bit peculiar i think; see this post:
http://www.murga-linux.com/puppy/viewtopic.php?t=9296

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i've noticed that i can't access any mailboxes (yahoo, hotmail does the same)
anyone know where does this problem come from?

[Béèm]

Can you ping or do a trace to those url's?

[jonyo]

Workin good for me in 2.12 to 6 live cd save file to HD.

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i've just now noticed that the problem comes from https pages.
i can't load them.. strange thing

i even tried to start my windows version of Firefox from Puppy, using Wine, which worked but https pages won't open, same problem; that's why i think it's not depending on the browser...

is there some magic words to add in a script somewhere, or a magic utility to use? i noticed Puppy has a great many network configuring tools, but i'm not very experienced in networking...

[HairyWill]

Is your network blocking port 443?
How do you access the internet?

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how can i check that my network is blocking port 443?

to be able to connect to internet, i used Puppy's 'network wizard', and the 'Auto DHCP' option; i connect via the proxy of the organization who owns my residence (ethernet port), it first direct me to an authentification page;

Puppy is the first Linux with which i can access internet 'normally' that is, i can download things, etc. https pages is the only problem..