IP Access Control Guide
March 20, 2025 by Pham Toan | Viewed: 407
IP Access Control Guide
This guide explains how to allow or block IP addresses using different formats, including IPv4 and IPv6.
Allowed IP List
Add IP addresses here to allow access.
Format: 110.5.3.3
Only this IPv4 address will be allowed.
Format: 102.5.1.1-102.5.1.50
All IPv4 addresses within this range will be allowed.
Format: 2001:db8::1
Only this IPv6 address will be allowed.
IPv6 addresses are written in hexadecimal format, separated by colons, and can be shortened using double colons (::) to replace consecutive zeros.
Blocked IP List
Add IP addresses here to deny access.
Format: 100.5.30.1/28
Blocks all IPv4 addresses from 100.5.30.0 to 100.5.30.15.
Format: 20.
Blocks all IPv4 addresses starting with 20.*.*.*, covering the entire 20. subnet.
Format: 2001:db8::/32
Blocks all IPv6 addresses within the 2001:db8::/32 range.
IPv6 CIDR notation works similarly to IPv4 but allows a much larger address space. The number after the slash represents the number of fixed bits in the network prefix.
Example: 2001:db8::/48 blocks all addresses from 2001:db8:0:0:: to 2001:db8:0:ffff:ffff:ffff:ffff:ffff.