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Full Version: IP range help for firewall

The Planet Forums > Security > General Security

jeff-p4

Jun 13 2004, 10:44 PM

I would like to block:

inetnum: 61.187.0.0 - 61.187.255.255
netname: CHINANET-HN
descr: CHINANET Hunan province network
descr: China Telecom

due to spam.

What is the proper format to block that whole range in APF? (61.187.0.0/what?)

bluePrint

Jun 14 2004, 01:13 AM

You would use 61.187.0.0/16 to cover the range 61.187.0.0 - 61.187.255.255.

CODE

[url]http://grox.net/utils/whatmask/[/url]

------------------------------------------------

TCP/IP NETWORK INFORMATION

------------------------------------------------

IP Entered = ..................: 61.187.0.0

CIDR = ........................: /16

Netmask = .....................: 255.255.0.0

Wildcard Bits = ...............: 0.0.255.255

------------------------------------------------

Network Address = .............: 61.187.0.0

Broadcast Address = ...........: 61.187.255.255

Usable IP Addresses = .........: 65534

First Usable IP Address = .....: 61.187.0.1

Last Usable IP Address = ......: 61.187.255.254

/bluePrint

jeff-p4

Jun 14 2004, 02:07 PM

Thank you very much bluePrint.

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