ICMP Hostname Tools for Linux 0.3 review

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The ICMP Hostname Tools for Linux include a responder daemon, a lookup tool, and a nameswitch module to handle ICMP host name functio

License: GPL (GNU General Public License)
File size: 26K
Developer: Fredrik Tolf
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The ICMP Hostname Tools for Linux include a responder daemon, a lookup tool, and a nameswitch module to handle ICMP host name functions.

The NSS module caches all requests (including failures) and honors the TTL value sent by the responding host. It uses a configuration file called /etc/nss-icmp.conf, which controls different aspects of its operation:

* timeout Sets the timeout in milliseconds for ICMP host name queries, by passing the -t option to idnlookup.
* nocache Disables the cache.
* ttlnotfound Sets the TTL for not-found cache entries is seconds. The default is 5 minutes.

Both icmpdnd and idnlookup need to run as root, due to the fact that they use ICMP. Thus, idnlookup needs be installed SUID root.

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