I am unable to connect using the Cisco VPN client because my network drops fragmented packets. I used setMTU.exe to set the ethernet adapter MTU to 1500 and the VPN adapter MTU to 1200. However, the packets are still 1514 bytes and are still being fragmented. I have tried a number of different MTU settings, but when trying to connect to the VPN server, fragmented packets are still being sent and therefore, dropped by my network.
It appears that the VPN client is disregarding the VPN adapter's MTU size. Any suggestions on how to prevent fragmentation?
Table of ContentsIntroductionVersion HistoryPossible Future
UpdatesDocuments PurposeNAT Operation in ASA 8.3+ SectionsRule Types
Network Object NATTwice NAT / Manual NATRule Types used per SectionNAT
Types used with Twice NAT / Manual NAT and Network Obje...
Table of Contents Introduction:This document describes details on how
NAT-T works. Background: ESP encrypts all critical information,
encapsulating the entire inner TCP/UDP datagram within an ESP header.
ESP is an IP protocol in the same sense that TCP an...