Cisco Adaptive Security Appliance (ASA) Software vs. Juniper SRX

Cisco ASA's are great for internal network connected access between a firewall and the central management server. And, for complex networks where high security requirements with overly strict compliance are necessary. For networks with limited connectivity to the core or for poor network connectivity these are not the best solution. There are other more stand-alone firewall's that do this better. These firewall's are a little more complex to set up to start with so significant knowledge of these devices is required to set them up and ensure they are best practice installed.

Incentivized

SRXs seem to be well suited at the enterprise level for plain routers, firewalls, and IDP/IDS. They work well on MPLS and Ethernet, including Internet. I have 3 SRXs also performing edge duty, with 2 in a high availability (HA) cluster. The Juniper line of SRXs provides a good range of scaling from small business to extremely large enterprise. Wire speed is a common comparison factor and Juniper shines in that area.

Incentivized

• ASA is our VPN concentrator. The client and server are very stable and very easy to use
• ASA also offers Intrusion Prevention, to an extent. This is also very useful for an improved security posture for a small company
• ASA allowed us to scale very quickly. We could onboard clients, partners, and consultants and give them a great onboarding experience as well
• Administrative costs with ASA are low. It's very easy to administer.

Incentivized

• Edge Device (Tunneling & Routing)
• Routing Instances
• Zone Based Firewall
• L3 Gateway/Vlan termination
• DHCP Server & DHCP Relay
• Good support community & Good available documentation
• Good support by the Vendor

Incentivized

• The ASDM software is at times a nightmare to install because of different java versions[.]
• [The firewall] could do with a power button, just to be able to do a hard reboot when needed[.]
• It would be nice to manage the firewall via the web on port 443[.]

Incentivized

• My only real criticism of the product is that it's hard to figure out how to upgrade the firmware from the CLI via TFTP via the docs, but it works great once you get it sorted.

Incentivized

To be honest there has been now great products out in the market compared to Cisco ASA. I beleieve Cisco has to do a lot of improvement in this area. The other defeiniete factors is the cost when it comes to renewals which is always a premium on Cisco products

Incentivized

I generally have not noticed the outages, however since it's a machine it can malfunction, we need to implement the firewall infrastructure in such a way that it is highly available with device failure, region failure etc. Else any solution will be having the issues if they are not build with resiliency.

Incentivized

The support is usually very good and gets back to you very quickly. However I had some instances of when two engineers will give me wildly different answers to what I thought was a simple question. Overall however I do rate the support highly and they are generally always very good.

Incentivized

This is the one area where I have a beef with Juniper. When I called into Cisco TAC, 90% of the time, the first person I spoke with was able to resolve my issue. With Juniper TAC, 90% of the time, the first person I speak with is not able to resolve my issue, seems to almost be reading from a script, and must escalate my ticket. All of which takes time.

Incentivized

It was quite a good one, how ever requires an expertise to deploy hence the SMB segment would be finding it difficult to implement this product. The one good reason is that there are lot of ASA certified engineers in compared to the other certified engineers. Hence this resembles positively on the deployment as you have quite a lot of experienced engineer on your deployment

Incentivized

We were using [pfSense] before in our environment but we regularly facing difficulties over it due to software bugs & downtime. After implementing Cisco ASA, it resolved our availability issue & provides us a reliable solution with the best security features & easy to understand GUI.

Incentivized

Juniper SRX stands tall compared to all these products for Large Service Provider Networks, where traffic volume is larger. Also, cost comparison with SRX's few other products can also be another contributing factor while selecting this. As well as Juniper Routers, Switches, and multiple products from the same vendor to maintain one single vendor environment. As well as Juniper Support is also really good.

• Most network engineers have worked with ASA, so there is no need for re-training when adding or turning over staff
• Current configs from older devices plug in easily, and are operational on larger devices if an upgrade is required
• Many support options available

Incentivized

• It is a workhorse for our field operations. It provides the last touch for an ISP to the customer. The customer has no view of the device, but with the repeatability of the device, they do not need to.
• The ability to roll out a dynamic routing protocol attached to a security zone allows elasticity to the environment that supports growth.
• VLAN support on the inside interfaces allow this to be the only device in some smaller deployments we install these in.

Incentivized