sysctl net.netfilter | grep timeout
net.netfilter.nf_conntrack_dccp_timeout_closereq = 64
net.netfilter.nf_conntrack_dccp_timeout_closing = 64
net.netfilter.nf_conntrack_dccp_timeout_open = 43200
net.netfilter.nf_conntrack_dccp_timeout_partopen = 480
net.netfilter.nf_conntrack_dccp_timeout_request = 240
net.netfilter.nf_conntrack_dccp_timeout_respond = 480
net.netfilter.nf_conntrack_dccp_timeout_timewait = 240
net.netfilter.nf_conntrack_frag6_timeout = 60
net.netfilter.nf_conntrack_generic_timeout = 600
net.netfilter.nf_conntrack_gre_timeout = 30
net.netfilter.nf_conntrack_gre_timeout_stream = 180
net.netfilter.nf_conntrack_icmp_timeout = 30
net.netfilter.nf_conntrack_icmpv6_timeout = 30
net.netfilter.nf_conntrack_sctp_timeout_closed = 10
net.netfilter.nf_conntrack_sctp_timeout_cookie_echoed = 3
net.netfilter.nf_conntrack_sctp_timeout_cookie_wait = 3
net.netfilter.nf_conntrack_sctp_timeout_established = 210
net.netfilter.nf_conntrack_sctp_timeout_heartbeat_sent = 30
net.netfilter.nf_conntrack_sctp_timeout_shutdown_ack_sent = 3
net.netfilter.nf_conntrack_sctp_timeout_shutdown_recd = 3
net.netfilter.nf_conntrack_sctp_timeout_shutdown_sent = 3
net.netfilter.nf_conntrack_tcp_timeout_close = 10
net.netfilter.nf_conntrack_tcp_timeout_close_wait = 60
net.netfilter.nf_conntrack_tcp_timeout_established = 432000
net.netfilter.nf_conntrack_tcp_timeout_fin_wait = 120
net.netfilter.nf_conntrack_tcp_timeout_last_ack = 30
net.netfilter.nf_conntrack_tcp_timeout_max_retrans = 300
net.netfilter.nf_conntrack_tcp_timeout_syn_recv = 60
net.netfilter.nf_conntrack_tcp_timeout_syn_sent = 120
net.netfilter.nf_conntrack_tcp_timeout_time_wait = 120
net.netfilter.nf_conntrack_tcp_timeout_unacknowledged = 300
net.netfilter.nf_conntrack_udp_timeout = 30
net.netfilter.nf_conntrack_udp_timeout_stream = 120