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+#
+# 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
+ Backlog 20
+ }
+
+ # 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
+}
+
+#
+# Strip NAT traffic
+#
+StripNAT