January 11th, 2013, 01:02 PM
Don't understand what the /xx part of an ip address is supposed to means
I thought I did. So if you have an ip address like 18.104.22.168 (just making one up, don't know where it points to), that's supposed to be a class A ip address and the subnet mask should be 255.0.0.0, correct? I would expect the ip/subnet info to then be listed as
I ask because I have an amazon aws and I try to limit which ip addresses can shell into it. So using the above example, I tried creating a rule with
but aws said it had to be
Ok, so after all of my googling clearly I have no clue what the final /xx is supposed to mean. Can anybody clue me in?
January 11th, 2013, 01:38 PM
That's CIDR notation. 22.214.171.124/8 and 126.96.36.199/8 are the same thing, both representing 70.x.y.z and the netmask 255.0.0.0. AWS might not like the fact that you used actual numbers for the X, Y, and Z (ie, that you had bits set) - try 188.8.131.52/8.
January 11th, 2013, 02:45 PM
Ok, that worked as well. Thanks for the quick reply. I'll read the link you posted to learn more about this. Thanks for educating.