Juniper SSG-550 Network Secure Services Gateway FirewallThe SSG 500 Series consists of high performance security platforms for regional branch office and medium sized, standalone businesses that want to stop internal and external attacks, prevent unauthorized access and achieve regulatory compliance. The SSG 550 SSG 550M provides 1+ Gbps of stateful firewall performance and 500 Mbps of IPSec VPN performance, while the SSG 520 SSG 520M provides 650 Mbps of stateful firewall performance and 300 Mbps of IPSec