A network administrator is tasked with configuring a tunnel between two offices to enable secure communication over a public network. Which protocol would be most suitable for encapsulating multiple types of transport layer protocols for transit over IP networks, without providing strong encryption or authentication mechanisms?
GRE is well-suited for encapsulating multiple types of transport layer protocols over IP networks. It allows for the wrapping of packets from various protocols to be transmitted over an IP infrastructure but does not inherently provide any encryption or authentication, distinguishing it from protocols like IPSec. IPSec, while also used for VPNs, provides robust encryption and authentication, making it a more secure option where confidentiality and data integrity are necessary. SSL/TLS primarily secures data transmissions between networked devices rather than encapsulating multiple protocols for transit. MPLS is generally used for high-performance telecommunications networks to direct and carry data from one network node to the next.
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What does GRE stand for and how does it work?
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How does IPSec differ from GRE?
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What are the scenarios when you would use GRE instead of IPSec?