IPv4 · ESP · FortiOS · FortiClient

FortiGate IPsec MTU Calculator

Site-to-Site Remote Access

Ethernet 1500 PPPoE 1492

NAT-T IPsec over TCP

ike-tcp-port

ip-fragmentation

pre-encapsulation

FortiClient

set proposal

1251415161718192021272829303132

set fragmentation enable

aes256-sha256

GRE VXLAN

Checksum (+4 B) Key (+4 B) Sequence number (+4 B)

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FortiOS 7.6

FortiClient XML

forticlient_configuration · ipsecvpn