$OpenBSD: README,v 1.1 2014/11/04 15:11:05 giovanni Exp $

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| Running ${FULLPKGNAME} on OpenBSD
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Memcached relies on SASL as authentication mechanisms, if you could not
use it, it should be firewalled accordingly. You may wish
to add a rule such as the following to /etc/pf.conf:

  block on $ext_if proto tcp to ($ext_if) port 11211