SENA Serial_IPTM Redirector 4.3 - Manual (Page 46)

A PC application using a serial connection is even simpler, relying on correct physical wiring to secure the data
and establish the identities of the connection endpoints.
Security Issues Introduced by Tactical Software Redirectors
The Tactical Software dial-out and serial redirectors (DialOut/IP, DialOut/EZ, DialOut/Client, and Serial/IP) use a
TCP/IP connection to the server that makes the actual modem/serial connection, as illustrated below:
The Tactical Software COM/IP Redirector also introduces a TCP/IP connection, by entirely replacing the modem
call with a network connection:
Consequently, three security issues arise:
1. Is data secure between the PC to the server? Network connections can be much easier to "tap" than a
telephone line, especially if traversing the Internet or unsecured segments of a corporate network.
2. Is the PC able to verify the identity of the server to which it is connecting?
3. Can the PC identify itself to the server?
The SSL/TLS Security option in Tactical Software Redirectors addresses these questions with SSL/TLS
encryption (for data security) and SSL/TLS certificates (to verify the identity of computers).