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tcp_wrappers support

Piler supports tcp_wrappers. To enable this feature add the –enable-tcpwrappers configure option, and recompile piler if necessary.

Then edit /etc/hosts.allow and/or /etc/hosts.deny to limit access to piler. Example hosts.allow file

piler: 11.22.33.44: ALLOW
ALL: ALL: DENY

Then if anything other than 11.22.33.44 tries to connect to piler, it will get the following error:

telnet piler.yourdomain.com 25
Trying 1.2.3.4...
Connected to piler.yourdomain.com.
Escape character is '^]'.
550 You are banned by local policy
Connection closed by foreign host.

You can see the following in syslog:

Oct 29 10:35:32 archivehost piler[23336]: connection from 123.123.123.123
Oct 29 10:35:32 archivehost piler[23336]: denied connection from 123.123.123.123 by tcp_wrappers
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