#
# Synchronizer settings
#
Sync {
	Mode NACK {
                #
		# Size of the buffer that hold destroy messages for 
		# possible resends (in bytes)
		#
		ResendBufferSize 262144

		# Entries committed to the connection tracking table 
		# starts with a limited timeout of N seconds until the
		# takeover process is completed.
		#
		CommitTimeout 180

		# Set Acknowledgement window size
		ACKWindowSize 20
	}

	#
	# Multicast IP and interface where messages are
	# broadcasted (dedicated link). IMPORTANT: Make sure
	# that iptables accepts traffic for destination
	# 225.0.0.50, eg:
	#
	#	iptables -I INPUT -d 225.0.0.50 -j ACCEPT
	#	iptables -I OUTPUT -d 225.0.0.50 -j ACCEPT
	#
	Multicast {
		IPv4_address 225.0.0.50
		IPv4_interface 192.168.100.200 # IP of dedicated link
		Group 3780
	}

	# Enable/Disable message checksumming
	Checksum on

	# Uncomment this if you want to replicate just certain TCP states.
	# This option introduces a tradeoff in the replication: it reduces
	# CPU consumption and lost messages rate at the cost of having 
	# backup replicas that don't contain the current state that the active 
	# replica holds. TCP states are: SYN_SENT, SYN_RECV, ESTABLISHED,
	# FIN_WAIT, CLOSE_WAIT, LAST_ACK, TIME_WAIT, CLOSE, LISTEN.
	# 
	# Replicate ESTABLISHED TIME_WAIT for TCP
}

#
# General settings
#
General {
	#
	# Number of buckets in the caches: hash table
	#
	HashSize 8192

	#
	# Maximum number of conntracks: 
	# it must be >= $ cat /proc/sys/net/ipv4/netfilter/ip_conntrack_max
	#
	HashLimit 65535

	#
	# Logfile
	#
	LogFile /var/log/conntrackd.log

	#
	# Lockfile
	# 
	LockFile /var/lock/conntrack.lock

	#
	# Unix socket configuration
	#
	UNIX {
		Path /tmp/sync.sock
		Backlog 20
	}

	#
	# Netlink socket buffer size
	#
	SocketBufferSize 262142

	#
	# Increase the socket buffer up to maximum if required
	#
	SocketBufferSizeMaxGrown 655355
}

#
# Ignore traffic for a certain set of IP's: Usually
# all the IP assigned to the firewall since local
# traffic must be ignored, just forwarded connections
# are worth to replicate
#
IgnoreTrafficFor {
	IPv4_address 127.0.0.1 # loopback
	IPv4_address 192.168.0.2
	IPv4_address 192.168.1.2
	IPv4_address 192.168.100.200 # dedicated link ip
	IPv4_address 192.168.0.200 # virtual IP 1
	IPv4_address 192.168.1.200 # virtual IP 2
}

#
# Do not replicate certain protocol traffic 
#
IgnoreProtocol {
	UDP
	ICMP
	IGMP
	VRRP
	# numeric numbers also valid
}