TP-Link range extenter to repeat distant weak wifi signal.

SOURCE: My tp-link TD-W8950ND 150Mbps Wireless Lite

this is because your modem is out dated your better off getting a new one

SOURCE: I need a password for

To secure your wireless network from unauthorized access,please click on this link and follow my instructions :-http://www.fixya.com/support/r3559128-wireless_router_security

SOURCE: Internet problem: I have configured my

please note that if your router DHCP is open you must close the access point DHCP if the twoic is open DHCP make a conflict and internet is stoped
best regards

SOURCE: i have a TP-LINK TL-WR940N

I have the same problem. Some people says that its because of interference from other neighbors' wireless signals or any other in the surrounding etc.You can go to Router Properties and change the CHANNEL to 6 or 11 and observe any changes.

SOURCE: disable Nat TP-LINK TL-WR1043ND

yeap it should be the firewall, here is the manual http://www.tp-link.com/resources/software/201161017075118.pdf
think this should help you.
But if you want my expertise, make the tp-link as a router and vdsl just the internet line. connect it to router wan and buy a switch for all your devices.That should be the safest and smartest way.

Testimonial: "Hi, I've finally found some time to test the dissabling the FW and I can say that in my case it helped. I can see now from TP-LINK IP cameras connected to the VDSL modem/router. Well done guys, thank you for your help. Kvinar"