General Instruction to connect LAN

Connect the LAN cable from the wall socket (I/O) to your Laptop / Desktop and go to command prompt / terminal on your system.

A black screen (window) will open. Type ipconfig for windows and ifconfig for Linux and press enter.

It will display some outputs.

Look at the IPV4 address.

If it’s in the series of 10.21.xxx.xx. (Academic) 10.22.xxx.xx (Hostel), 10.23.xxx.xx (Residence) then you’re getting the correct network IP address.

If it is displayed as “media disconnected” then check with any other LAN cable.

If the IP address is displayed as above then try the below command:

ping netaccess.iitm.ac.in

The output should be:

64 bytes from 10.24.0.147 (10.24.0.147): icmp_seq=1 ttl=63 time=0.405 ms

64 bytes from 10.24.0.147 (10.24.0.147): icmp_seq=2 ttl=63 time=0.311 ms

The network is fine.

If “netaccess.iitm.ac.in” is not giving the above output, then check the DNS server settings. Fix DNS as automatic on your network settings.

ALSO

Disable IPv6 in Network Adapter Properties

Press the Windows logo key + R / search to open the Run dialog. Type ncpa.cpl and hit Enter.

It will open the Network Connections window. Right-click the network adapter Ethernet to disable IPv6 on, and then select Properties.

In order to disable IPv6, uncheck the box next to Internet Protocol Version 6 (TCP/IPv6).

Click OK.

Then follow the below steps:

Access external sites like google, yahoo etc., you need to login every day netaccess.iitm.ac.in using your LDAP credentials and approve your IP. Make sure while approving netaccess, check the IP Address should be your system IP address eg. 10.21.xxx.xxx, 10.22.xxx.xx, 10.23.xxx.xx.. If it is not as above, check the proxy settings on your browser. Kindly remove the proxy and approve your IP for internet access.

Check the proxy settings on your browser. Kindly remove the proxy and approve your IP for internet access.

If you want to find whether proxy is enabled in browser or not just login to “netaccess.iitm.ac.in” page using your LDAP credentials. If the IP is in the series of 10.24.4.222 then proxy is enabled. Disabled it and refresh the netaccess page. You will get your system IP. Approve and authorize the IP.

If you still experience any trouble kindly revert back to us with your system mac address, room no., hostel name and contact mobile no. and the output of the above commands and send these details through email to “helpdesknetworks@iitm.ac.in”.

To find system mac address:

Go to command prompt / terminal on your system.

Type getmac -v for windows and then press enter.

You will see the mac address (ethernet physical address) in the form of 12 digits(numbers & characters)