Protection ACL for WAN INTERFACE

An protection ACL for WAN interfaces ip access-list extended PERIMETER-IN remark ANTI-SPOOFING deny ip INTERNAL NETWORKS any remark BROADCAST deny ip 0.0.0.0 0.255.255.255 any remark RFC 1918 – private networks deny ip 10.0.0.0 0.255.255.255 any deny ip 172.16.0.0 0.15.255.255 any…

EXCEL IP address management

Excel Formulars for German Excel: B1 : =LINKS(A1;FINDEN(“.”;A1)-1) C1 : =TEIL(A1;FINDEN(“.”;A1)+1;FINDEN(“#”;WECHSELN(A1;”.”;”#”;2))-FINDEN(“.”;A1)-1) D1 : =TEIL(A1;FINDEN(“#”;WECHSELN(A1;”.”;”#”;2))+1;FINDEN(“#”;WECHSELN(A1;”.”;”#”;3))-FINDEN(“#”;WECHSELN(A1;”.”;”#”;2))-1) E1 : =TEIL(A1;FINDEN(“#”;WECHSELN(A1;”.”;”#”;3))+1;255)