About the SRX345-SYS-JB
The SRX345 is a 1U firewall in Juniper’s SRX300 line, built for medium and large branch offices. It combines firewall, routing, switching and VPN in one device. Juniper rates it at 5 Gbps firewall throughput with large packets (1.5 Gbps IMIX), 977 Mbps IPsec VPN with 1400-byte packets and 375,000 concurrent sessions.
SYS-JB means the hardware and the Junos Software Base license come as one part number, ready to deploy. The four Mini-PIM slots take optional interface modules.
What’s included
- SRX345 with 16 Gigabit Ethernet ports (8 of them SFP), four Mini-PIM slots, 4 GB memory and 8 GB flash
- One power supply, a power cable and a rack-mount kit
- Junos Software Base: firewall, NAT, IPsec, routing, MPLS and switching
Sold separately
- SFP optics
- Mini-PIM interface modules
- Security subscriptions (IPS, Enhanced Web Filtering, threat feeds), Remote Access VPN user licenses, Advanced and Premium tiers and Juniper Care, listed in Support & Licensing above
Choosing a version
- SRX345-SYS-JB (this page): Junos Software Base, one AC power supply
- SRX345-SYS-JB-2AC: Junos Software Base, two AC power supplies
- SRX345-SYS-JB-DC: Junos Software Base, DC power
- SRX345-SYS-JB-T: TAA-compliant version
- SRX345-SYS-JE: Junos Software Enhanced, which adds application security services
- SRX345: hardware only; needs an SRX345-JSB or SRX345-JSE software license
Other SRX300-line models: SRX340-SYS-JB and SRX380-P-SYS-JB-AC.
Not sure which version you need? Call (984) 225-1600 or request a quote and we’ll check it against your rack and network.
SRX345-SYS-JB specifications
| Network ports | 8x RJ-45, 8x SFP |
|---|---|
| Mini-PIM slots | 4 |
| MACsec | Yes |
| Firewall throughput (1518B) | 5000 Mbps |
| Firewall throughput (IMIX) | 1500 Mbps |
| IPsec VPN throughput (IMIX) | 0.325 Gbps |
| Concurrent sessions (thousands) | 375 |
| Form factor | 1U, fixed chassis |
| Dimensions (H x W x D) | 1.72 x 17.36 x 14.57 in (4.4 x 44.1 x 37 cm) |
| Weight (as shipped) | 10.8 lb / 4.9 kg |
| Airflow | Front-to-back |
| Power supplies | 1 |
| Fans | 4 |
| Memory | 4 GB |
| Storage | 8 GB Flash |
| MAC addresses (thousands) | 15 |
| Operating temperature | 32° through 104° F / 0° through 40° C |
| Operating system | Junos OS |
Full specifications (65)
Network ports
| RJ-45 Ports | 8 |
|---|---|
| RJ-45 Port MACsec | Yes |
| SFP Ports | 8 |
| SFP Port MACsec | Yes |
Management and other ports
| Console Ports | 2 |
|---|---|
| Console Port Type | RJ-45, Mini USB Type B |
| Management Ports | 1 |
| Management Port Type | RJ-45 |
| USB Ports | 1 |
| USB Port Type | USB 3.0 Type A |
Chassis
| Chassis type | Fixed |
|---|---|
| Form Factor | 1U |
| Chassis Height | 1.72 in / 4.3688 cm |
| Chassis Width | 17.36 in / 44.0944 cm |
| Chassis Depth | 14.57 in / 37.0078 cm |
| Weight (as shipped) | 10.8 lb / 4.9 kg |
Power
| Power supplies | 1 |
|---|---|
| AC Average Power Consumption | 122 W |
| AC PSU Average Heat Dissipation | 420 BTU/h |
| Maximum Current Consumption | 1.496 A |
| Maximum Inrush Current | 7.3 A (220 VAC) |
Cooling
| Airflow Direction | Front-to-back |
|---|---|
| Fan modules | 4 |
Processor
| Memory (DRAM) | 4 GB |
|---|
Storage
| Internal Storage Size | 8 GB |
|---|---|
| Internal Storage Type | Flash |
Routing engines and fabric
| Mini PIM Slots | 4 |
|---|
Security performance
| Firewall Throughput (1518B) | 5000 Mbps |
|---|---|
| Firewall Throughput (64B) | 550 Kpps |
| Firewall Throughput (IMIX) | 1500 Mbps |
| IPsec VPN Throughput (1400B) | 0.977 Gbps |
| IPsec VPN Throughput (IMIX) | 0.325 Gbps |
| Routing With Packet Mode (64B) | 750 Kpps |
| Routing With Packet Mode (1518B) | 5500 Mbps |
| Routing With Packet Mode (IMIX) | 2300 Mbps |
| NGFW Performance (CPS) | 0.43 Gbps |
| Secure Web Access Firewall (CPS) | 0.295 Gbps |
| AppID Sessions (thousands) | 64 |
| Application Visibility And Control | 1.7 Gbps |
| GRE Tunnels | 1024 |
| IPS Sessions (thousands) | 64 |
| Maximum SSL VPN Concurrent Users | 250 |
| Maximum Security Policies | 4000 |
| Maximum Security Zones | 64 |
| Maximum Virtual Routers | 128 |
| NAT Rules | 2000 |
| Recommended IPS | 0.6 Gbps |
| URLF Sessions (thousands) | 64 |
Performance
| Route Table Size (RIB) (IPv4) (thousands) | 1000 |
|---|---|
| Route Table Size (FIB) (IPv4) (thousands) | 600 |
| Route Table Size (RIB) (IPv6) (thousands) | 1000 |
| Route Table Size (FIB) (IPv6) (thousands) | 600 |
| Max Concurrent Sessions (IPv4/IPv6) (thousands) | 375 |
| IPsec VPN Tunnels | 2048 |
Switching and routing scale
| MAC Addresses Per System (thousands) | 15 |
|---|---|
| VLAN IDs | 3000 |
Environmental
| Operating Temperature | 32° through 104° F / 0° through 40° C |
|---|---|
| Storage Temperature | -4° through 158° F / -20° through 70° C |
| Operating Altitude | 10000 ft (3040 m) |
| Humidity, operating (noncondensing) | 10% through 90% |
| Humidity, non-operating (noncondensing) | 5% through 95% |
| Acoustic Noise Level (Max) | 45.5 dB |
| Maintenance Clearance | 24 in / 60.96 cm |
Software
| Operating system | Junos OS |
|---|---|
| Minimum software release | 15.1X49-D35 |
Common questions
What is the difference between SRX345-SYS-JB and SRX345-SYS-JE?
Both are the same hardware. JB includes Junos Software Base (firewall, NAT, IPsec, routing, MPLS and switching); JE includes Junos Software Enhanced, which adds application security services.
Is the SRX345 a router or a firewall?
Both. Juniper calls it a services gateway: the included software covers firewall and NAT as well as routing, MPLS and switching.
Does it come with a rack-mount kit?
Yes. The power supply, power cable and rack-mount kit are included.
What else can I add?
Security subscriptions such as IPS and web filtering, Remote Access VPN user licenses and Juniper Care. They are listed with prices in Support & Licensing above.








