Change MTU size on RED devices
As there is a know issue with Citrix connections over a RED interface, I would like the possibility to change the MTU size on the WAN interface of a RED, or on the RED interface of the managing firewall.
this can be done by running the following command from the advance firewall via putty ifconfig RED interface i.e. RED1 mtu XXXX
Please be aware that a reboot or an firmware update will revert this back to the normal settings
Unfortunately the red answers further with succeeded foir too big icmp packets, so PMTUD will not work :-(