I can't open link http://192.168.1.2/admin/advanced

To connect to your wireless router, the router's wireless settings needs to be configured with the SSID, encryption etc. and also the wireless cards in all the laptops/computers needs to be configured with these router's wireless settings. Then the laptops/desktop computers can communicate with your wireless router.
Connect a LAN cable from the Linksys to the LAN port on your computer.
Open a browser and enter the Linksys configuration URL
http://192.168.1.1
The default login = admin
The default PW = admin
You can protect your router by changing the default admin PW (write it down and put it in a safe place)
Go to the wireless configuration and set up the SSID and WPA or WPA2 encryption.
Now apply these settings to the wireless card in your laptop/computer.
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

Access your configuration utility by going to http://192.168.0.1. By default the username is admin and no password. Select Advanced Network on the left menu. Then on select the Advanced Tab on the right side. Just put a check on enable UPnP and save the setting.
The link below is the manual of your router which can be helpful. http://static.highspeedbackbone.net/pdf/D-Link-DIR-615-Manual.pdf

how to open port 21 in dlink dir 615?

You could refer to the Manual in order to do the changes on your router Following link could help you resolve your problem.


http://www.generalmanual.com/Network/Netgear-WNR2000-Wireless-N-Router.htm

Connect a LAN cable from the D-Link to your computer's LANport, open a browser and enter the D-Link's configuration URL. OR open thebrowser on your laptop and enter the D-Link's configuration URL..
http://192.168.0.1
The default login = admin
The default PW = blank (just press Enter)
You can now configure the wireless settings. 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

Here is a site that will help you most of the D-Link routers: http://www.default-password.info/d-link/
Here is an extract: D-Link DI-624 - all admin (none) - Admin access (HTTP) User (none) - Admin access (HTTP)

you need to replace your modem with a router that is capable of running Network Address Translation. You are trying to route private IP's (192,168.x.x) over the public IP (internet) network.

First connect your router to computer with ethernet cable.
then access it with following link
http://192.168.1.1
or
http://192.168.0.1

type user name as "admin" and password as "admin" or blank or "password"

then go to advanced -> UPNP check it is neabled or not.?

Let me know if you need more assistanse.
Thanks.

connect your router to computer with ethenret cable in lan port.
Then access your router with following link.
http://192.168.1.1
or
http://192.168.0.1
type user name as "admin" and password as "admin" or blank or 'password"

then go to advanced and enable dhcp then save settings and restart the router to take effect.

acess your router http://192.168.0.1
or http://192.168.1.1

then user is admin
passowr dis bleank or admin
then selcet setup of nternet type is with static ip set ip and gateway.
also set security encryption key.
also enable advanced security.
then allow mec adreses of which u want to give internet.