On 01/06/13 17:16, steve-ALUG@hst.me.uk wrote:
On 01/06/13 15:53, Anthony Anson wrote:
/big snip/
Where was I?
Oh yes. I had never considered Vodafone to be my ISP: I considered it as a connection to Paston in lieu of a landline, and Paston as my ISP. Paston provides my webspace and holds my domains, so traffic goes via their servers.
ISP stands for Internet Service Provider. Paston provides internet services for your (webspace, domains etc). and so are an ISP for you. Vodaphone connect your local network to the internet - the internet connectivity service and so are also an ISP for you.
Although both are ISPs for you, when you have connectivity problems, people will be most interested in the ISP that connects you to the internet - vodaphone in this case.
I am aware that the current IP address goes with the host pub, café, library, dongle, w.h.y?
WHY? That's just the way it works.
No-no-no: w.h.y? = 'what have you?' Maybe I shouldn't assume universal experience of Usenet.
(Simplifying a bit) A computer with a network card in it, but not connected to anything else, will give itself a ip address. If you connect computers together but not to the internet, when you turn a computer on it will send a message out on the network and say "What IP address can I use?" If there is a computer on the network that is working as a DHCP (Dynamic Host Configuration Protocol) server, it will allocate an IP address. If there are no DHCP servers present, then the computers may squabble about it and choose one for themselves.
While I have the connectors (for connection through a router, and straight box to box) - and network cards dating back to PCI) I've not yet found the necessity for networking. It's getting less handy, with bigger and vaster memory sticks...
Connecting to the internet is slightly different. Usually your ISP (vodaphone in this example) will give you one IP address - it's simpler and quicker for them to just give you one address. The device that you use to connect to the internet typically has two IP addresses: One on the internet side (your public IP address) and one on your network/inside your house etc - your private IP address.
Ah,and I'll have one of those even if I've never used an internal network?
Is this why (earlier) attempts to install two dongles (both Vodafone but one of them the later 3 GB version) failed?
Or was it under the influence of the Fat Cat's best efforts?
Catfight between dongle softwares?
I think this happens so that you can do more-or-less anything you want to on an internal network, and it won't affect the outside internet. It also allows a home-network of computers in your house to have various different IP addresses, and you still have just one public IP address on the outside. A router (or dongle) will route traffic to the appropriate computer, and do NAT - Network Address Translation - i.e. changing the external IP address to the correct internal one, and vice-versa.
So, if you're at home with your dongle plugged into one computer, the dongle will have a public IP address (the internet side of things), and will give your PC an private/internal IP address.>> On 01/06/13 14:31, mick wrote:
On Sat, 01 Jun 2013 11:00:47 +0100 Anthony Anson tony.anson@girolle.co.uk allegedly wrote:
On 31/05/13 15:23, mick wrote:
My concept of an ISP seems to be out of date then...
For agesandagesandages I was with Zetnet (from about six months after they started, to not long after Breathe hootered them) and connected through a modem to a BT line. This was flaky, more of which later. BT at the time "didn't support the internet" - their words - and wouldn't fix the problem of line-dropping: they said it tested OK for speech. My ISP was Zetnet.The servers which connected me to the internet were in Shetland (later, with the coming of broadband, in Manchester).
When my BT landline finally died completely BT didn't do anything about repairing it, but kept on billing me for rental, which is why I got the dongle. (It died because their grey twin feeder's insulation had become cracked and porous, and where the descending wire looped up to go through the window-frame, the accumulation of water running down it had eaten away the beryllium copper wire inside.)
That's followed, and the tutorial will be kept for possible future reference.
If you're in an internet cafe or using a public wifi , they will have a their own network. This will (almost certainly) be connected to the internet via an ASDL router. This router will have a public IP address, on the internet side of things. It will dish out a private IP address to any computer that connects to the WIFI. You will almost certainly get a different IP address each time you visit that cafe, and also get different IP addresses at different cafes. Once you've connected to such a network, provided you stay connected, your private IP address is unlikely to change. Also, provided the ASDL router (or your dongle) stays connected, its public IP address is unlikely to change.
If a ASDL router or a 3G Dongle is disconnected from the internet for a while, when it gets switched on, you may or may not get the same public IP address that you got before - that depends entirely on how your ISP (Vodafone) sets things up.
I'll have to check on that - just out of interest
Your problems may be due to a particular public IP address being blocked because someone who was using that address did something wrong on the FTP server you were trying to access. If you switched off for a while and switched on again, you may have been allocated a different public IP address which was not blocked by the FTP server, so, you got in that time. Also, if you tried from an internet cafe, using WIFI not the dongle, you will almost certainly have had a different public IP address, and it was unlikely that this one was blocked by the FTP server, so you would have had success in downloading.
HTH Steve
Indeed yes, thank you for the trouble you have taken (and the homework you've set...)