net.netfilter.nf_conntrack_tcp_timeout_established=7440
net.netfilter.nf_conntrack_udp_timeout=60
net.netfilter.nf_conntrack_udp_timeout_stream=180
-net.netfilter.nf_conntrack_skip_filter=1
# disable bridge firewalling by default
net.bridge.bridge-nf-call-arptables=0