> > Actually it works fine, and thats how satellite links work.
> > They receive packets on the satellite interface and send
> > them on the land line interface. It works fine.
>
> It sends the packets out the land lines interface, but instead
> of using the land line's interface for the source address, it uses
> the satellites interface. So packets are sent via the land line and
> received via the satellite link.
Actually what happens with the satelite is that you are given a static Ip
which when anyone try's to get to that IP address is routed to a gateway
computer at the uplink station (for the satelite) which decapulates the
packet and then re-encapsulates it with the mac address for your satelite
card rather then an IP address then it's a broadcast from there.
E.G
Your computer askes example.com for a page using the IP address
203.109.250.50
When example.com sends the reply it is routed to a gateway (sometimes not
even in the same country as you're origional ISP link)
The gateway will accept packets for a range (say 203.109.250.x) and then
look up a table of IP addresses vs mac addresses (e.g. 203.109.250.50 =
00-09-BC-01-E2-92)
The gatway then encapsulates the data with a destination address of the mac
address then sends it to the satelite where anyone pointed to the sat
recieves it but only the person with the correct mac address will decode it.
Well that's what i figured out. Please correct me if i'm wrong.
So in theory you can connect with any ISP etc as long as you get that static
IP.
Regards
Edward Murphy
>
> --
> chesty
>
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