I'm using a PIX 501 version 6.3(4). Its very lightly loaded ~1% CPU average, max 15%. After a few weeks it seems to stop working. A power-reset will fix this.
The best symptom I have been able to come up with is that about every couple of days the memory usage (according to PDM) jumps about 200 Kb and stays there until the next jump. I've only just found this, but it seems (starting from a base usage of about 11 Mb) to roughly match the time-scale of failure.
I use no VPNs, no translation and no encryptions. There are five addresses behind the firewall.
Any thoughts?
