Establishing VPN connectivity
I installed a wireless router (NetGear WRG614) after the modem to create a Wi-Fi network at home. Netgear auto configuration is excellent and it was a breeze setting the same up. Contrast this with MN-700 that sucks big time! The crux is that static IP was assigned to my Netgear AP and LAN adapater was configured for automatically getting the IP and DNS.
The internet connectivity worked hunky dory with this configuration. Websites (www.dslreports.com) reported a 183 kbps (download) / 190 Kbps (upload) on the connection with local LAN speeds at 100 Mbps and wireless connectivity at 11 Mbps.
Enter the MS corpnet. To access internal sites, we need to VPN into the network. Tried doing that but couldn't connect. After contacting a very helpful and responsive support from internal IT teams, I was informed that due to NAT on my router VPN can't be established. In support terminology -
"the reason that you are not able to connect is due to your system not being able to receive VPN packets. You client is sending data requests to the VPN server but your system is not receiving the packets back to your system.
The most common cause for this issue is related to NAT and firewall devices. The logs indicates that you are connecting from behind a NAT device. Please bypass the NAT device by connecting your computer directly to the broadband modem and then attempt to connect again."
Hmm.. Now it was turn of Airtel broadband tech support to help. The Tier 1 support couldn't help with the VPN and then was escalated to Tier 2 technical support at Airtel. I was able to get in touch with them after a few efforts (they operate between 7 AM to 10 PM).
After the initial suggestions of :
- Get a USB ADSL Modem
- Get a corporate plan for static IP
the support staff started to explore options. Learning: Know what you want and be fearless to suggest options to support staff. That will atleast spur support staff to think..finally after 1 hour of talking and brainstorming we figured it out. We set the Web Distributor II to "RFC 1483 bridged" mode. that set the modem to "transparent" mode. On the Netgear modem, I set the connection to require login (PPPoE) and provided my credentials (earlier the login credentials were saved on the ethernet modem). configured the LAN adapter to take IP configuration automatically. And vola! the VPN started to work!
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