I ran into this same issue back in Aug this year and this was their response... (Note, I have not purchased and confirmed this yet)
Jason Machtemes Thank you for contacting The NETSCOUT Technical Assistance Center. The engineering team got back to me just when you left the chat room, but the G1 definitely does not support a 4096 size certificate/key, while the G2 (green model) does support that size. I will put in a feature request for the change in cert size for the G1 for you, although I believe development is slowing down for that unit since we've released the G2. I'm not sure, but since it appears you just purchased this unit, you might want to check with your sales representative here as to whether you can return the unit you have and get the G2 instead, if it better suits your needs. Please let me know if I can provide any additional information. Best Regards, ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
