as far as i know – is this true? (i’ve never studied IT)

your PC at home being connected to a modem/router is given an IP address ie the laptop has no fixed address the modem when connected to the PC GIVES the laptop the ip address

the modem/router per se is GIVEN an ip address by the server, when the modem is switched off and then back on the server might give the modem/router another ip address – a password is required to allow the laptop to use the server?

servers are given an ip address by some mysterious grand co-ordinator of the internet?

http://en.wikipedia.org/wiki/IP_address

wookiemeister said:

as far as i know – is this true? (i’ve never studied IT)

your PC at home being connected to a modem/router is given an IP address ie the laptop has no fixed address the modem when connected to the PC GIVES the laptop the ip address

the modem/router per se is GIVEN an ip address by the server, when the modem is switched off and then back on the server might give the modem/router another ip address – a password is required to allow the laptop to use the server?

servers are given an ip address by some mysterious grand co-ordinator of the internet?

a LAN being held together by a modem/router (a switch is something that doesn’t have a modem i think??)

the modem/router gives all users of the LAN its own address that allows them to talk to the modem/router

if you pump in ipconfig in the cmd window it will tell you the ip address of the computer you are using

Your modem/router has generally 1 IP address given to it by the ISP.

Your computers at home connected to that are on a sub-network or subnet for short. The router uses something called NAT or network address translation to take the traffic from the subnet and put it out onto the Internet using the 1 IP address..

But yes each computer on the subnet has its own address generally given to it by the router.

The subnet addresses are not generally valid Internet ip addresses and are usually in the address range 192.168.X.X or 10.1.X.X

Muralis action is as diabolical as ever, bunnings cheat.

Dropbear said:

Your modem/router has generally 1 IP address given to it by the ISP.

Your computers at home connected to that are on a sub-network or subnet for short. The router uses something called NAT or network address translation to take the traffic from the subnet and put it out onto the Internet using the 1 IP address..

whats a netmask?

Dropbear said:

Your modem/router has generally 1 IP address given to it by the ISP.

Your computers at home connected to that are on a sub-network or subnet for short. The router uses something called NAT or network address translation to take the traffic from the subnet and put it out onto the Internet using the 1 IP address..

so that means that every modem connected to the ISP is part of the “network’
the modem to laptop/s is part of the “subnet”

The netmask defines what the range of the subnet is.

A netmask of 255.255.255.0 specifies a subnet of 255 addresses (the last triplet of the IP address)

wookiemeister said:

Dropbear said:

Your modem/router has generally 1 IP address given to it by the ISP.

Your computers at home connected to that are on a sub-network or subnet for short. The router uses something called NAT or network address translation to take the traffic from the subnet and put it out onto the Internet using the 1 IP address..

so that means that every modem connected to the ISP is part of the “network’
the modem to laptop/s is part of the “subnet”

Generally yes. Every modem has a valid Internet IP address and therefore unique.

Dropbear said:

The netmask defines what the range of the subnet is.

A netmask of 255.255.255.0 specifies a subnet of 255 addresses (the last triplet of the IP address)

so if you had a subnet in a commercial premises for example , what you are doing is setting the maximum number of addresses the subnet can handle?

when you read the address you read from right to left?

Dropbear said:

wookiemeister said:

Dropbear said:

Your modem/router has generally 1 IP address given to it by the ISP.

Your computers at home connected to that are on a sub-network or subnet for short. The router uses something called NAT or network address translation to take the traffic from the subnet and put it out onto the Internet using the 1 IP address..

so that means that every modem connected to the ISP is part of the “network’
the modem to laptop/s is part of the “subnet”

Generally yes. Every modem has a valid Internet IP address and therefore unique.

are the internet addresses used by the severs given by someone else/ something else in the same way as the way the ISP gives the modem an ip address?

wookiemeister said:

Dropbear said:

The netmask defines what the range of the subnet is.

A netmask of 255.255.255.0 specifies a subnet of 255 addresses (the last triplet of the IP address)

so if you had a subnet in a commercial premises for example , what you are doing is setting the maximum number of addresses the subnet can handle?

when you read the address you read from right to left?

No it’s read left to right.. 192.168.0.1 etc.. 192 is the first bit, 168 is the next bit, 0 the next etc

Netmasks are a little hard to understand unless you’re familiar with binary..

wookiemeister said:

Dropbear said:

wookiemeister said:

so that means that every modem connected to the ISP is part of the “network’
the modem to laptop/s is part of the “subnet”

Generally yes. Every modem has a valid Internet IP address and therefore unique.

are the internet addresses used by the severs given by someone else/ something else in the same way as the way the ISP gives the modem an ip address?

Companies (including ISPs) get a quota of IP addresses from the organisation responsible for managing and handing them out. I think that’s ICAN but I may be mistaken.

Dropbear said:

wookiemeister said:

Dropbear said:

Your modem/router has generally 1 IP address given to it by the ISP.

Your computers at home connected to that are on a sub-network or subnet for short. The router uses something called NAT or network address translation to take the traffic from the subnet and put it out onto the Internet using the 1 IP address..

so that means that every modem connected to the ISP is part of the “network’
the modem to laptop/s is part of the “subnet”

Generally yes. Every modem has a valid Internet IP address and therefore unique.

dyndns won’t work with the telstra.internet APN. Yay for MAC address.

Dropbear said:

wookiemeister said:

Dropbear said:

The netmask defines what the range of the subnet is.

A netmask of 255.255.255.0 specifies a subnet of 255 addresses (the last triplet of the IP address)

so if you had a subnet in a commercial premises for example , what you are doing is setting the maximum number of addresses the subnet can handle?

when you read the address you read from right to left?

No it’s read left to right.. 192.168.0.1 etc.. 192 is the first bit, 168 is the next bit, 0 the next etc

Netmasks are a little hard to understand unless you’re familiar with binary..

ahh right then the last triplet being zero means that the third triplet defines the address max number, if it was 238 then it would be another number that defines the max addresses

wookiemeister said:

Dropbear said:

wookiemeister said:

so if you had a subnet in a commercial premises for example , what you are doing is setting the maximum number of addresses the subnet can handle?

when you read the address you read from right to left?

No it’s read left to right.. 192.168.0.1 etc.. 192 is the first bit, 168 is the next bit, 0 the next etc

Netmasks are a little hard to understand unless you’re familiar with binary..

ahh right then the last triplet being zero means that the third triplet defines the address max number, if it was 238 then it would be another number that defines the max addresses

the 0 means that it doesnt “mask out” any of the last triplet of digits.. so all 255 are available …

if it was 238 then you’d apply the bitmap mask of 238 to the addresses and you’d get “some” available. (i cant be arsed working out what and how many) – like I said, you need to understand binary and masks in order to get netmasks.. it’s not very intuitive.

Dropbear said:

wookiemeister said:

Dropbear said:

No it’s read left to right.. 192.168.0.1 etc.. 192 is the first bit, 168 is the next bit, 0 the next etc

Netmasks are a little hard to understand unless you’re familiar with binary..

ahh right then the last triplet being zero means that the third triplet defines the address max number, if it was 238 then it would be another number that defines the max addresses

the 0 means that it doesnt “mask out” any of the last triplet of digits.. so all 255 are available …

if it was 238 then you’d apply the bitmap mask of 238 to the addresses and you’d get “some” available. (i cant be arsed working out what and how many) – like I said, you need to understand binary and masks in order to get netmasks.. it’s not very intuitive.

ok no probs