I just finish setting a gre tunnel with IPSEC and 3DES encryption. When I used the default settings, configured by the SDM, it set the tunnel MTU to 1420. With that default setting I was able to bring up the tunnel, but simple tcp services would not work, like viewing a HTTP server of using FTP. So
[ZyWALL/USG] How to configure an SSL VPN rule for full Overview. The SecuExtender client is a tool used to establish an SSL VPN connection between a client PC and a Zyxel security appliance. Once connected the user has access over the security appliance local network or can send all traffic, including internet, through the tunnel (depending on SSL VPN rule setup). Fortigate VPN interface mtu : networking Jul 20, 2008 Route Based VPN - Check Point Software
Overview. The SecuExtender client is a tool used to establish an SSL VPN connection between a client PC and a Zyxel security appliance. Once connected the user has access over the security appliance local network or can send all traffic, including internet, through the tunnel (depending on SSL VPN rule setup).
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In the cases where IPsec is being used, it is customary to set the MTU size on the tunnel interfaces to 1400 bytes and to set the TCP-MSS-adjust to 1360 bytes. This can be configured in a Cisco
How To Guide: Set Up & Configure OpenVPN client/server VPN HOW TO Introduction. OpenVPN is a full-featured SSL VPN which implements OSI layer 2 or 3 secure network extension using the industry standard SSL/TLS protocol, supports flexible client authentication methods based on certificates, smart cards, and/or username/password credentials, and allows user or group-specific access control policies using firewall rules applied to the VPN virtual interface. Troubleshooting MTU size over IPSEC VPN | Network Canuck Jun 10, 2013