A few question about the TP-Link TD- W9970 Dual ADSL / VDSL

[#1]

Model : TD-W9970

Hardware Version : TD-W9970 v1 00000001

Firmware Version : 0.9.1 2.9 v0025.0 Build 160812 Rel.32537n

ISP : [/COLOR]

On my TD-W9970, I have the latest firmware, pre-installed from new.

Has anyone successfully set up & tested the VPN security of this TD-W9970 modem / router, if so,

1) How secure is the VPN, compared to installed versions of VPN on your PC / Devices.
1a) Can the VPN be used in conjunction with other VPN services / programs etc, IE: Avast SecureLineVPN

2) Can the connected clients be named
3) Can the lease time be set to permanent.
4) What are the individual options 241 through 245, in the DHCP Condition Pool & what does each option do.
6) Can the MTU be changed, if so how.
7) How can I stop the Status page from auto refreshing every few seconds

[#2]

I have now got a couple of questions answered, thank you.....

For reference, here is how I managed to get there.....

Lease Time

Network / WAN Settings / Edit the pppoa / Connection mode, Always on, (Lease Time) Idle time, set to required (0 meaning connection remains active at all times) / Save

MTU

Network / WAN Settings / Edit the pppoa / Advance (at the bottom, just above the Save / Back buttons) / MTU (Change to best result for your line) / Save

Whilst there I also changed to OpenDNS Servers 208.68.222.222 & 208.68.220.220, I never rely on ISP's Dns servers.....

The latest on the download page is "TD-W9970(EU)_V1_160812" from http://www.tp-link.com/en/download/TD-W9970.html#Firmware , It seems that the UK page has NOT been updated, as yet.....lol As at least 3 updates since "150831" (TD-W9970(EU)_V1_160413 / TD-W9970(EU)_V1_160705 & TD-W9970(EU)_V1_160812), why they havent updated the UK page http://uk.tp-link.com/download/TD-W9970.html#Firmware, I do not know, but need to hurry up & catch up.....lol