What is the typical latency added when using a Cisco firewall such as ASA 5505? Are we talking less than 50 microseconds?
The high-end Cisco ASA 5580 series has a published spec of 30μs latency as a selling point for ultra low-latency environments. The entry-level ASA 5505 would not be close to that level. I'd assume that 50μs is out of reach for the 5505.
I'm seeing about 3ms - 4ms between my web servers and my database servers for the TCP connection (
So yes, less than 50ms.
I don't know if the ASA 5505 is comparable.
For comparison, three TCP connections between two hosts on the same network that didn't travel through the ASA 5510 took 256μs when averaged. (Same methodology as the first measurement.)