Rob Spoor wrote:Be warned that Telnet is a very insecure protocol. You should not allow any computer outside your local network to use it, and even within the local network you should limit access as much as possible.
Yes it is (same for FTP). These protocols send everything readable over the network. It is always a good idea to let the company's security team validate the approach.
The good thing is that the vulnerabilities are known
. Starting to build an own client/server application/protocol from scratch might introduce security holes still unknown to mankind.
Next step could be to step over to SSH , SSH tunneling
Maybe the WAN route between the two countries is already secured and encrypted?