I hope I'm not revisiting my performance problems with the SA540 here. Yesterday, I replaced a client's Cisco/Linksys home router with an ISA550. This is the first one I have sold. The web filtering is disabled, but the antivirus, network reputation, and IPS is enabled. First thing this morning I get a call saying their Internet access is really slow. I looked at the IPS status and see where it seems to be blocking a lot of traffic including Symantec, which it should not be blocking. No viruses are reported.
The client uses a cloud application. They have 35 nodes active as I write this. About a half dozen are IPods, which are used for scanning in the warehouse. The firmware should be the latest (1.2.17). I checked the bandwidth usage (ISA550 report) and they certainly aren't maxing out their bandwidth. I also checked the total WAN bandwidth and at times it is reporting over T1 speeds. They only have a T1, which is shared with 12 phone lines in a dynamic configuration (more data bandwidth available if phone lines are not active).
So, did I sell the wrong product here. Shouldn't this ISA550 at least be able to keep up with a Linksys N900?
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