Juniper · SRX300 line
Juniper SRX340
The Juniper SRX340 is a rackmount firewall that runs Junos OS. Juniper publishes a firewall throughput of 4.7 Gbps and an IPS throughput of 400 Mbps for it. It has 16 x 1GbE (8 RJ-45 + 8 SFP).
- Firewall throughput
- 4.7 Gbps
- Threat protection
- 400 Mbps (IPS)
- IPsec VPN
- 733 Mbps
- Form
- Rackmount
Who it suits
As a rackmount unit it suits a head office, campus or data centre with a server rack. With protection switched on, plan for an internet line of no more than about two-thirds of the IPS throughput figure. For the SRX340 that means a line of up to about 250 Mbps.
Juniper SRX340 specifications
| Performance | |
|---|---|
| Firewall throughput | 4.7 Gbps |
| IPS throughput | 400 Mbps |
| IPsec VPN throughput | 733 Mbps |
| Maximum concurrent sessions | 256,000 |
| New sessions per second | 10,000 |
| Hardware | |
| Form factor | 1U |
| Ports | 16 x 1GbE (8 RJ-45 + 8 SFP) |
| Expansion | 4 Mini-PIM slots (T1/E1, VDSL2, serial, 4G/LTE, Wi-Fi) |
Session, port and IPS figures are from Juniper's SRX performance matrix.
Specifications from Juniper's published data, checked October 2026. See Juniper's firewall pages. Throughput figures are each manufacturer's own published numbers. Manufacturers test in different ways, so compare across brands with care. Confirm details before ordering.
What we do with it
- Supply
Firewall supply and installation
The right-sized firewall from any of the five brands, with its licence, installed and configured at your site.
- Audit
Firewall configuration and audit
A review of your rules, firmware, admin access and VPNs, with the weak points fixed and written down.
- Renewal
Firewall licence renewal
Renewals for FortiGuard, Sophos, Palo Alto Networks, SonicWall and Juniper subscriptions, quoted from your serial number.
- Migrate
Firewall migration
Move from an old firewall to a new one, same brand or another, with the rules and VPNs carried over.
Questions about the SRX340
What internet speed can the SRX340 handle?
Juniper publishes an IPS throughput of 400 Mbps for the SRX340. Leaving headroom for busy hours, that suits an internet line of up to about 250 Mbps with protection switched on. With inspection off, its firewall throughput is 4.7 Gbps.
What ports does the SRX340 have?
16 x 1GbE (8 RJ-45 + 8 SFP). Expansion: 4 Mini-PIM slots (T1/E1, VDSL2, serial, 4G/LTE, Wi-Fi).
How many connections can the SRX340 handle?
Juniper lists a maximum of 256,000 concurrent sessions and 10,000 new sessions per second.
Does the SRX340 need a licence?
The hardware works as a basic firewall on its own. Protection features such as intrusion prevention, web filtering and anti-malware need an active Juniper subscription, and so do firmware updates and support. We quote the firewall with the licence term you choose.
Do you supply the SRX340 with installation?
Yes. We supply it with its licence registered, install and configure it at your site, and hand over the logins and documentation. Ask for a quote on this page.
Similar Juniper models
- Rackmount
Juniper SRX345
Firewall 5 Gbps, threat protection 600 Mbps (IPS)
- Rackmount
Juniper SRX380
Firewall 20 Gbps, threat protection 2 Gbps (IPS)
- Rackmount
Juniper SRX1500
Firewall 9 Gbps, threat protection 3 Gbps (IPS)
- Rackmount
Juniper SRX1600
Firewall 24 Gbps, threat protection 4.5 Gbps (NGFW)
Closest models from other brands
Throughput figures are each manufacturer's own published numbers. Manufacturers test in different ways, so compare across brands with care.
- Rackmount
Fortinet FortiGate 120G
Firewall 39 / 39 / 28 Gbps, threat protection 2.8 Gbps
- Rackmount
Sophos XGS 2100
Firewall 30 Gbps, threat protection 5 Gbps
- Rackmount
Palo Alto Networks PA-545-POE
Firewall 5.0 Gbps, threat protection 3.0 Gbps
- Rackmount
SonicWall NSa 2700
Firewall 5.2 Gbps, threat protection 3 Gbps