About the SRX300-SYS-JB
The SRX300-SYS-JB combines the branch services gateway hardware with Junos Software Base under one part number. It provides six Gigabit RJ-45 ports and two Gigabit SFP ports. The included software covers firewall, NAT, IPsec, routing, MPLS and switching; an external supply and cable are included, with the rack kit ordered separately.
What’s included
- SRX300-SYS-JB services gateway with six RJ-45 ports and two SFP ports
- External power supply and power cable
- Junos Software Base: firewall, NAT, IPsec, routing, MPLS and switching
Sold separately
- Rack-mount kit
- Advanced and Premium licenses and Juniper Care, listed in Support & Licensing above
Choosing a version
- SRX300-SYS-JB (this page): Junos Software Base bundle, convection cooling airflow
- SRX300: hardware only; JSB or JSE required, convection cooling airflow
- SRX300-SYS-JB-T: Junos Software Base bundle, convection cooling airflow, TAA-compliant
- SRX300-SYS-JE: Junos Software Enhanced bundle, convection cooling airflow
Related models: SRX320, SRX340.
Not sure which version you need? Call (984) 225-1600 or request a quote and we’ll check it against your rack and network.
SRX300-SYS-JB specifications
| Network ports | 6x RJ-45, 2x SFP |
|---|---|
| MACsec | Yes |
| Firewall throughput (1518B) | 1900 Mbps |
| Firewall throughput (IMIX) | 600 Mbps |
| IPsec VPN throughput (IMIX) | 0.116 Gbps |
| Concurrent sessions (thousands) | 64 |
| Form factor | Desktop, fixed chassis |
| Dimensions (H x W x D) | 1.38 x 12.64 x 7.60 in (3.5 x 32.1 x 19.3 cm) |
| Weight (as shipped) | 4.38 lb / 1.99 kg |
| Airflow | Convection cooling |
| Power supplies | 1 |
| Memory | 4 GB |
| Storage | 8 GB Flash |
| MAC addresses (thousands) | 15 |
| Operating temperature | -4° through 140° F / -20° through 60° C |
| Operating system | Junos OS |
Full specifications (63)
Network ports
| RJ-45 Ports | 6 |
|---|---|
| SFP Ports | 2 |
| SFP Port MACsec | Yes |
Management and other ports
| Console Ports | 2 |
|---|---|
| Console Port Type | RJ-45, Mini USB Type B |
| USB Ports | 1 |
| USB Port Type | USB 3.0 Type A |
Chassis
| Chassis type | Fixed |
|---|---|
| Form Factor | Desktop |
| Chassis Height | 1.38 in / 3.505 cm |
| Chassis Width | 12.64 in / 32.106 cm |
| Chassis Depth | 7.60 in / 19.304 cm |
| Chassis depth (with power supplies and fans) | 7.60 in / 19.304 cm |
| Weight (as shipped) | 4.38 lb / 1.99 kg |
| Weight (fully loaded) | 4.38 lb / 1.99 kg |
Power
| Power supplies | 1 |
|---|---|
| Power Adapter Type | AC to DC |
| AC PSU Average Heat Dissipation | 85 BTU/h |
| System Average Power Consumption | 24.9 W |
| System Maximum DC Input Rating | 2.8 A |
| System Maximum Current Rating | 1 A |
| Maximum Current Consumption | 0.346 A |
| Maximum Inrush Current | 7 A (220 VAC) |
Cooling
| Airflow Direction | Convection cooling |
|---|
Processor
| Memory (DRAM) | 4 GB |
|---|
Storage
| Internal Storage Size | 8 GB |
|---|---|
| Internal Storage Type | Flash |
Security performance
| Firewall Throughput (1518B) | 1900 Mbps |
|---|---|
| Firewall Throughput (64B) | 200 Kpps |
| Firewall Throughput (IMIX) | 600 Mbps |
| IPsec VPN Throughput (1400B) | 0.336 Gbps |
| IPsec VPN Throughput (IMIX) | 0.116 Gbps |
| Routing With Packet Mode (64B) | 300 Kpps |
| Routing With Packet Mode (1518B) | 1500 Mbps |
| Routing With Packet Mode (IMIX) | 800 Mbps |
| NGFW Performance (CPS) | 0.226 Gbps |
| Secure Web Access Firewall (CPS) | 0.171 Gbps |
| AppID Sessions (thousands) | 16 |
| Application Visibility And Control | 0.5 Gbps |
| GRE Tunnels | 256 |
| IPS Sessions (thousands) | 16 |
| Maximum SSL VPN Concurrent Users | 25 |
| Maximum Security Policies | 1000 |
| Maximum Security Zones | 16 |
| Maximum Virtual Routers | 32 |
| NAT Rules | 1000 |
| Recommended IPS | 0.2 Gbps |
| URLF Sessions (thousands) | 16 |
Performance
| Route Table Size (RIB) (IPv4) (thousands) | 256 |
|---|---|
| Route Table Size (FIB) (IPv4) (thousands) | 256 |
| Route Table Size (RIB) (IPv6) (thousands) | 256 |
| Route Table Size (FIB) (IPv6) (thousands) | 256 |
| Max Concurrent Sessions (IPv4/IPv6) (thousands) | 64 |
| IPsec VPN Tunnels | 256 |
Switching and routing scale
| MAC Addresses Per System (thousands) | 15 |
|---|---|
| VLAN IDs | 1000 |
Environmental
| Operating Temperature | -4° through 140° F / -20° through 60° C |
|---|---|
| Storage Temperature | -4° through 158° F / -20° through 70° C |
| Operating Altitude | 10000 ft / 3048 m |
| Humidity, operating (noncondensing) | 10% through 90% |
| Humidity, non-operating (noncondensing) | 5% through 95% |
| Maintenance Clearance | 24 in / 60.96 cm |
Software
| Operating system | Junos OS |
|---|
Common questions
What is in the software bundle?
It pairs an external power supply and 6x RJ-45 and 2x SFP with Junos Software Base (firewall, NAT, IPsec, routing, MPLS and switching).
What about the rack-mount kit?
It is not included. Order the rack-mount kit separately for the SRX300.
What does the Base bundle cover?
Junos Software Base covers firewall, NAT, IPsec, routing, MPLS and switching with the included hardware.








