Uh, no. Maybe their tools have value, but their arguments are simply wrong. Nothing they say about L4 is true as far as cons. They link to another article about VPNs being "bad" where they said VPNs:<p>Disrupt productivity
Increase workload and margin of error
No monitoring capability
Poor security, utilizing a flawed and incomplete security model<p>None of which are true. I have hundreds of healthcare employees all over the country and they're highly productive, we have LOTS of monitoring abilities, highly secure and does not have an "incomplete" security model for whatever that means. The workload increase thing is silly, clicking a single button is not an increased workload.
"Less reliable: Layer 7 does not provide the same level of reliability as Layer 4, as it does not have the same error-checking mechanisms."<p>Uh, doesn't stuff like HTTP run on top of layer 4? (eg, tcp). This article doesn't seem entirely correct, but I'm a dunce with this stuff.
If its layer 7, then you have to push a cert to the endpoints and MITM the traffic since everything is running SSL/TLS. Not sure that is exactly safer since now your security monitoring tools have access to everyone's password and authentication credentials.
In the picture, can someone explain FTP and MPG and JPEG at layer 6? I don't understand this.<p>Edit:
I am not exactly sure of the distinction between HTTP and FTP in the layers.