I have all Juniper network Infra.
Going through the SSL-VPN device and sftp to my J6530, and EX4200 I only get 20Kbps. bandwidth pipe for ftp or uploading code to the routers and switches.
Now if I by pass the SSL-VPN deivce and sftp direct to my ISP router I get 200Kbps.
For a crazier test I opended 10 sftp sessions to all network devices and they all were 20Kbps a peice.. So it seems like the SA-4500 is restricting the bandwidth per session to 20K, but the Bandwiths settings I found were global which are set to 3Mbps.
Any ideas, is thier a defualt per bandwidth session setting I'm hitting... FYI - Im using Filezilla for my sftp client.