Do I need to change the maximum transmission unit (MTU) for the VPN header?
Internet Protocol Security (IPsec) adds protocol overhead to each packet, which can lead to fragmentation. Fragmented packets then need to be reassembled at the receiving gateway, which can lead to performance degradation. Pre-fragmentation of packets can help keep the packet size at a level where fragmentation is not likely to occur, which aids performance in the network. The protocol overhead depends on the type of encryption that is chosen and can be calculated accordingly.
Email your VPN-related questions to firstname.lastname@example.org.
Dig deeper on VPN setup and configuration
Related Q&A from Rainer Enders, VPN expert
Administrators don't have to worry about interoperability; integrated mobile application and device management is the best approach.continue reading
Ensuring that the client software itself is up to date is just one of many reasons why it's critical to oversee VPN clients.continue reading
To ensure mobile device security, VPN expert Rainer Enders explains that it is crucial to monitor changed states and block software modifications.continue reading
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.