On 30/09/18 13:41, Ralph Corderoy wrote:
Hi Clive,
Problem is trying to ensure that the IP address is issued to the
required MAC address.
I think you're trying to have the ADSL router dish out IP addresses to
those that come asking by DHCP from your LAN, but have the DHCP server
always give a known IP address to the same MAC address,
and possibly refuse to give an IP address to any unknown MAC address.
This is the difficult bit, if you really need to do it.
Whether that's possible with the TalkTalk router's GUI, I don't know.
You might just have to poke around lots, or ask on a TalkTalk forum.
Peter's advice is another option. Ditch the centralised allocation of
IP address for MAC address on the router and configure each device to
use a distinct static IP address instead. Moving the range dished out
by the DHCP server out of the way of the range you've used for the
static ones. The downside is you no longer have a single view of what
devices exist.
My Talktalk badged D-link router (2780?) does show all devices connected.
I didn't know that I had so many, but I think I know what they all are.
Besides each is a pencil icon which apparently I can click to set this
as fixed (Reserved) Ip address.
I have a small DHCP range 16-31 and fixed devices between .1 and .15
FWIW my current DHCP devices are 2 tablets and a phone, an Amazon Echo,
and a WiFi power socket. When the children are home they can add up to
another 7 devices.
Yes, I suppose there is a security risk, but an intruder needs to break
the wireless security first, unless they are going to connect by Ethernet.
Peter
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