Which transmission media are the most secure and the least secure?
There are three broad categories of media: Wire, fiber and wireless. On a very high level, it could be said that fiber is the most secure as it is the hardest to tap. Cable is a little more secure, as physical access is not hard to tap and sniff the passing traffic.
Then there is wireless, it broadcasts point-to-point or well beyond the facility in all possible directions. Anyone that can pick up the signal may be able to sniff sensitive information. Although there is a second item we must consider, and that is the physical and technical controls that have been implemented. Wireless can be made more secure by using WPA, encryption or 802.1x.
A cabled network can be fully switched, use encryption and have implemented VLANS. So the point would be that even seemingly weaker systems can have controls implemented to make their security more robust.
Dig Deeper on Network Security Monitoring and Analysis
Related Q&A from Michael Gregg
Enterprise security expert, Michael Gregg answers a question regarding port 3389 issues when a user tries to open port 3389 RDP on their router to ... Continue Reading
Security expert Michael Gregg discusses the disadvantages to a layered approach to enterprise security. Continue Reading
Learn how to change your security settings to allow ActiveX in Internet Explorer 6 or later, from our enterprise security expert Michael Gregg. Continue Reading