With iptables -L -n -v, you can get the number of times each firewall rule has been applied, which is very useful in debugging. I'd like to know if there's a similar way to find out how many times a network route has been used. I'm mostly asking about Linux and Windows solutions, but any platforms' solutions to this would be interesting.
3 Answers
Try
route -neeC
and look at the "Use" column. man route
says this is the count of lookups for the route.
-
Thanks, this looks useful. I'm not entirely sure that a lookup against a route is the same thing as a final decision to use that route AFTER conducting a lookup. Is this safe to assume?– Lee BOct 26, 2009 at 20:34
-
3Fwiw, this 2009 answer will not work anymore (empty result) on linux >= 3.6 (~2012): ipv4: Delete routing cache– A.BNov 27, 2019 at 19:40
FreeBSD:
netstat -rn
Linux:
netstat -rneC
Windows:
I think something can be done via netsh
I don't know of a way to get this information directly, but it would be relatively straightforward with a set of empty rules in iptables that match up with the rules in the routing table.
Windows
to tags, for Windows guru to notice the question