Hi guys. There was a post a while back where someone asked for suggestions to improve their network security. I got into a nice discussion/argument with Scott about UTMs, SonicWall and router/firewall stuff. Long story short, I've been slowly considering replacing my company's SonicWall an re-designing the whole security setup.
First, we are a small company of under 100 users, but we are also a financial institution, so security is especially critical. The admins before me had previously installed a SonicWall NSA 2400, which was later upgraded/replaced by a NSA 3600. Actually, we have two of these SonicWalls connected together for high hvailability/failover, but they act as one unit.
Currently, we have three WAN connections that connect to the SonicWall and that feeds our LAN and WLAN with Internet. We also use the SonicWall for static routes to a couple of 3rd party VPN routers. There are a boat-load of firewall rules and NAT policies which I have been slowly auditing. Many of them have turned out to be stagnant and no longer needed. Documentation here has been pretty bad so I'm making sure I've got all that cleared up before I make any big changes.
So far, I do like the SonicWall because of the simplicity of having everything in one device, but at the same time, I kind of hate it. It has an external security log analyzer system (called GMS Analyzer) which spits out custom reports, but displays information in the worst possible way, such that it's barely useful. I feel like I am pretty blind to any real security issues so I absolutely need something better in this area.
What I am after now is I would like to start considering some new hardware products/configurations that could be better for diving up the roles shared by the SonicWall.
So, can I get some suggestions on how I should be setting up the router/firewall & threat management pieces?
For clarity, here is a list of things we use the SonicWall for:
- Routing/NAT/Firewall (X1 LAN interface is our LAN's default gateway)
- Incoming WAN connections
- Wireless access management - (using SonicPoint APs)
- Gateway AV
- IDS/IPS
- SSLVPN
- Content filter
- Botnet filter
- Anti-spyware
- Security event analyzing & reporting
Note: we do also have regular antivirus running in our environment, as well as 3rd party email spam filtering, and a SIEM, so we don't just rely on the SonicWall for security.