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I'm using pid number to monitor uptime of all critical services. But I'm unable to find pid for iptables. Does iptables have pid?

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iptables is a kernel module, not a process. you can use lsmod to see the various parts if they are compiled as loadable modules for your kernel

lsmod | grep tabl

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No, iptables is managed by the kernel; there is no corresponding process, so no process identifier.

  • Ok. Is there any way to check uptime of iptables ? – msp9011 Apr 26 '18 at 19:16
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    Since it’s managed by the kernel, its uptime is the kernel’s. – Stephen Kitt Apr 26 '18 at 19:29

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