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Ok...so, the iptables counter can overflow if left to long and to zero the counters you can use the simple iptables -Z command. This would be very good information if ...
- 09-27-2005 #1Just Joined!
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- Jun 2005
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iptables counters?
Ok...so, the iptables counter can overflow if left to long and to zero the counters you can use the simple iptables -Z command. This would be very good information if I actually knew what the counters did!
Ive done a lot of reading on the iptables framework, not once has anything explained what the counters do. Im just wondering........
Anyone?
- 09-28-2005 #2Linux User
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- Aug 2005
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Count packets!
When using Windows, have you ever told "Ehi... do your business?"
Linux user #396597 (http://counter.li.org)
- 09-30-2005 #3Just Joined!
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- Feb 2005
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When you do an iptables -L -v the left most counter is the number of packets that have matched that particular rule and the 2nd counter is the number of bytes that have matched that particular rule.
An admin would want to see this for various reasons:
- how often you get a connection to a specific port
- to see if a a specific action matched the rule (when testing your firewall)
- to see if a rule is ever matched
- to see how much bandwidth was used by a particular service
- for debugging (if you see counter on the INPUT but not on the OUTPUT)
I am sure that most people could find more use of these.
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