Technical specifications
Juniper SRX300 — Full Technical Specifications
The SRX300 is Juniper's small branch firewall: a fanless desktop unit running Junos, meant for the far end of a network rather than its core. It is bought by organisations that already run Junos elsewhere and want the branch to be configured, monitored and audited with the same tooling as everything else.
Both conditions are listed — a new unit, and refurbished ones that come back as branches consolidate.
Official datasheet
Original spec sheet © Vendor. Hosted by hardwaresys for buyer reference. Specifications subject to vendor’s published documentation.
Full Specifications
A firewall sheet reads differently from a server one: the performance lines are laboratory figures under a stated test, and the number you actually get depends on which services are enabled at once. Read the throughput rows as a ranking against other models in the family rather than as a promise for your traffic. The session and policy limits are the rows that genuinely decide suitability, because they are hard ceilings rather than averages, and a branch that exceeds them fails in a way no tuning fixes. The software line matters too: a firewall inherits its life expectancy from the release it can run, so check that against your estate before the hardware.
| Ports | 8 x 1GbE (6 x RJ-45 + 2 x SFP) |
| Firewall Performance (max) | 1 Gbps |
| IPS Performance | 100 Mbps |
| VPN Performance (AES256+SHA-1) | 250 Mbps |
| Max Concurrent Sessions | 64,000 |
| New Sessions/sec (TCP) | 5,000 |
| Max Security Policies | 1,000 |
| RAM | 4 GB |
| Flash Storage | 8 GB |
| Form Factor | Desktop (32.08 x 3.47 x 19.10 cm) |
| PSU | External AC, non-redundant |
| Average Power Consumption | 24.9 W |
| Heat Dissipation | 85 BTU/h |
| Cooling | Fanless |
| Operational Temperature | -20° up to 60°C |
| OS | Junos OS 15.1X49 |
| MACsec | 2 x 1GbE ports |
Looking to buy this configuration?
We source this chassis OEM-new or refurbished, QC-inspected and shipped door-to-door. Quote-only pricing.