My ISP just placed a new router outside of our PIX 515, and now, every 4
hours, the PIX loses connectivity and needs to be rebooted. Is this an ARP
problem (is it looking for the mac of the old server)? Any info would be
appreciated. Thanks.
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Yes it's an ARP issue. I bet your PIX has the following line:
arp timeout 14400 (equal 4 hours in seconds)
The other parameters for timeout settings are something like the following:
timeout xlate 1:00:00 conn 1:00:00 udp 0:02:00
timeout rpc 0:10:00 h323 0:05:00
timeout uauth 0:05:00 absolute
Well, this wouldn't be in the default configuration of any IOS rev I've
seen, but you may want to check for a "sysopt noproxyarp (interface)"
command in your configuration. Such an option, viewed as a security
enhancement, can cause the problem you're having. If you wish to use it,
you'll probab
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