CIDR Calc

ACL Builder

Generate Cisco-style ACL lines from IPs, CIDRs, and service ports with correct wildcard masks.

ActionProtocol

Source (IP or CIDR)Destination (IP or CIDR)

ServicePort

Output

ACL line

permit tcp 192.168.1.0 0.0.0.255 10.0.0.0 0.0.0.255 eq 443