Check Avahi Responses' TTL Field To make Avahi ignore packets unless the TTL field is 255, edit '/etc/avahi/avahi-daemon.conf' and ensure the following line appears in the '[server]' section: 'check-response-ttl=yes' This helps to ensure that only mDNS responses from the local network are processed, because the TTL field in a packet is decremented from its initial value of 255 whenever it is routed from one network to another. Although Aproperly-configured router or firewall should not allow mDNS packets into the local network at all, this option provides another check to ensure they are not permitted. Fix: No Remediation Info oval:org.secpod.oval:def:48341 oval:org.secpod.oval:def:48341 oval:org.secpod.oval:def:48948 SCAP Repo OVAL Definition 2018-11-08