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Topics > 3G/4G Modem and Carrier Issues > FAQ ID # 135

FAQ ID # 135
Last Update : 2012/02/20
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Question / Issue
Unable to make inbound connections from the Internet to the LAN-Cell using Alltel

Answer / Solution
By default, Alltel blocks most "inbound" connections to remote devices via a firewall between their network and the Internet. 

UDP Port 500 is typically open for initiating IKE requests to establish IPSec VPN tunnels.  You can set up a VPN tunnel to your LAN-Cell and access remote devices via the tunnel.

Otherwise, you must work with your Alltel field support engineer to define which specific ports must be opened in their firewall for your application.  You must also match these rules in the LAN-Cell's firewall.  It may be possible to request that Alltel open ALL inbound ports from ANY remote IP address which would effectively eliminate the impact of the Alltel firewall.


Direct Link to This FAQ
http://www.proxicast.com/AbsoluteFM/?f=135

Tags
block blocked closed down open outbound inbound incoming
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