watch iptables counters

watch -d -n 2 iptables -nvL
This will highlight (with a box over it) any changes since the last refresh.

3 Alternatives + Submit Alt

  • This will allow you to watch as matches occur in real-time. To filter out only ACCEPT, DROP, LOG..etc, then run the following command: watch 'iptables -nvL | grep -v "0 0" && grep "ACCEPT"' The -v is used to do an inverted filter. ie. NOT "0 0"

    watch --interval 0 'iptables -nvL | grep -v "0 0"'
    Code_Bleu · 2009-08-22 18:18:05 12
  • Watch the number of packets/bytes coming through the firewall. Useful in setting up new iptables rules or chains. Use this output to reorder rules for efficiency. Show Sample Output

    watch 'iptables -vL'
    alanr723 · 2009-03-20 14:49:12 10
  • this alternative shows the differences as they occur so that they are made plain Show Sample Output

    while true; do iptables -nvL > /tmp/now; diff -U0 /tmp/prev /tmp/now > /tmp/diff; clear; cat /tmp/diff; mv /tmp/now /tmp/prev; slee p 1; done
    unixmonkey34223 · 2012-04-15 00:02:33 0

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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