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How can I make iptables show me port numbers instead of aliases for well known port numbers (eg. http for 80, https for 443 etc.). Is there a way to make it show just port numbers at all times?

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Use the -n option.

$ iptables --help
[...]
  --numeric     -n              numeric output of addresses and ports
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What about the CentOS/Linux Setup Utility - I use that configure the firewall most of the time - any way to disable the aliases in there? – Lukasz Aug 29 '11 at 23:30

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