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Test ID:
Title:icmp netmask request

The remote host answered to an ICMP_MASKREQ query and sent us its
netmask .

An attacker can use this information to understand how your network is set up
and how the routing is done. This may help him to bypass your filters.

Solution : reconfigure the remote host so that it does not answer to those
requests. Set up filters that deny ICMP packets of type 17.

Risk factor : Low

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-1999-0524
XForce ISS Database: icmp-netmask(306)
XForce ISS Database: icmp-timestamp(322)
CopyrightThis script is Copyright (C) 1999 Renaud Deraison

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