Can I block the ip range in this field or only individual IPs ?

You can block or allow ranges using the format 192.168.0.0/16 in the Screened IP section of your Admin dashboard /admin/logs/screened_ip_addresses

What if I want to block only part of the pool e.g. 175.159.64.0 - 175.159.127.255 ?

175.159.64.0 - 175.159.127.255 :left_arrow_curving_right: 175.159.64.0/18

Classless Inter-Domain Routing | CIDR blocks CIDR is principally a bitwise, prefix-based standard for the representation of IP addresses and their routing properties. It facilitates routing by allowing blocks of addresses to be grouped into single routing table entries. These groups, commonly called CIDR blocks, share an initial sequence of bits in the binary representation of their IP addresses. IPv4 CIDR blocks are identified using a syntax similar to that of IPv4 addresses: a dotted-decimal address, followed by a slash, then a number fro...

[image] slivo: Can you explain the methodology, why? You can understand about the CIDR notation going to the link that falco mentioned. Some useful tips is that /32 is the same ip (1.2.3.4 = 1.2.3.4/32), /24 is the 256 possibilities of the last part (like 1.2.3.0 to 1.2.3.255), and every 8 that you subtract after the slash makes the range larger, so 0.0.0.0/0 is the range of all ips (ipv4). The ip range you requested has all ranges of the last part, and some ranges from the 3rd part, so the notation would be something between 16 and 24. To make things easier you can use some utility for that, like the following: https://www.ipaddressguide.com/cidr (I’m not the site owner, just a quick search for “ip range to cidr util”, so use it at your own risk) The result (range of 175.159.64.0 - 175.159.127.255) is: 175.159.64.0/18 (I’m not sure of the result actually, haven’t calculated myself, although, as expected, it’s between 16 and 24, but I think it’s correct because it’s the complete last part, plus 64 for the 3rd part, and 64=2^6, and then 24-6=18).

Blacklist ip blocks - ip range?

Product Support

slivo (slivo) January 20, 2021, 5:54pm 5

Can you explain the methodology, why?

Topic		Replies	Views
I would like to block a range of IP addresses on a discourse forum Product Support moderation	8	398	December 6, 2024
CIDR Block Rule doesn't seem to work Product Support	2	96	November 30, 2024
CIDR Screened IPs Not Working Product Support	0	79	February 4, 2025
How can I block an IP address? are there wildcards? Product Support	14	7210	May 28, 2016
ISP-based anti-spam countermeasures Feature	13	2732	August 11, 2015

Blacklist ip blocks - ip range?

Related topics