ICMP netmask request response
| icmp-netmask (306) |  Low Risk |
Description:
A response was received to an Internet Control Message Protocol (ICMP) netmask request. By determining the netmasks of various computers in your network, an attacker can better map your subnet structure and infer trust relationships.
Consequences:
Other
Remedy:
Configure your firewall or filtering router to block outgoing ICMP packets.
References:
Platforms Affected:
- Apple Mac OS
- Cisco IOS
- Compaq Tru64
- Data General DG/UX
- IBM AIX
- IBM OS2
- Linux Kernel
- Microsoft Windows 2000
- Microsoft Windows 2003 Server
- Microsoft Windows 95
- Microsoft Windows 98
- Microsoft Windows 98SE
- Microsoft Windows Me
- Microsoft Windows NT 4.0
- Microsoft Windows XP
- Novell NetWare
- SCO SCO Unix
- SGI IRIX
- Sun Solaris
- WindRiver BSDOS
- HP-UX
Reported:
Not available
The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.
For corrections or additions please email xforce@iss.net