Restrict Traffic To VIP By Subnet

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1

I would like to restrict a subnet (192.168.1.0/24) from accessing VIP: 10.10.10.10. Is this possible with a irule? I can only find ways on how to restrict traffic from a single IP and not a subnet. Any help would be appreciated.

Thanks

Dan

2

use this:

when CLIENT_ACCEPTED {
   if { [IP::addr [IP::client_addr]/24 equals 192.168.1.0] } {
      drop
   }
}
3

Just go with a datagroup with Irule method. So that you can add more IP’s in the blacklist group on the file. You need not keep editing your irule.

Create a datagroup called blacklist subnet, make sure its type IP.

type: ip

ltm data-group internal blacklist_subnet {
records {
20.20.20.0/32 { }
30.30.30.30/25 { }
}
type ip
}

Then create your irule like below,

when CLIENT_ACCEPTED {
if { [class match [IP::client_addr] eq blacklist_subnet] } {
	log local0. "Client IP - [IP::client_addr] is blacklisted. Dropped traffic"
    drop
}
}
4

Thanks Jaikumar and Faruk! The help is much appreciated!

The data group intrigues me. I don’t see an option to create an “IP” type data group. The options I have are address, string, integer, and external file.

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image_225659.png693×457 8.83 KB

5

Thanks I got it figured out with the data groups. Your example was command line instead of GUI so it threw me off. Thanks again for your help!