To VPN or not to VPN

Have you ever questioned if virtual private networks (VPNs) provide adequate privacy and security? Do you trust your VPN? There has always been something suspicious about VPN, because instead of trusting your own ISP, you choose to trust some guys somewhere in the world and an unknown ISP. VPNs are supposed to hide your data …

Which VSAT Contention Ratio is good for you?

A contended VSAT service is a connection which you will be sharing with several other users/vessels.  The amount of users/ships you share the link with is called the contention ratio.  Most commercial systems offer contented services because they are less costly than their dedicated counterparts. The advantage of sharing the connection is that the cost …

Bandwidth, latency and congestion

Bandwidth is a measure of the capacity of a line in kbps (kilobits per second). Latency is a measure of the speed of a line between two hosts in ms (milliseconds). Factors that affect bandwidth include the physical properties of the medium being used and whether it is shared. Cable and all wireless connections are shared media. …