diff --git a/xos/synchronizer/files/etc/ufw/sysctl.conf b/xos/synchronizer/files/etc/ufw/sysctl.conf
new file mode 100644
index 0000000..8707032
--- /dev/null
+++ b/xos/synchronizer/files/etc/ufw/sysctl.conf
@@ -0,0 +1,57 @@
+#
+# Configuration file for setting network variables. Please note these settings
+# override /etc/sysctl.conf. If you prefer to use /etc/sysctl.conf, please
+# adjust IPT_SYSCTL in /etc/default/ufw.
+#
+
+# Uncomment this to allow this host to route packets between interfaces
+#net/ipv4/ip_forward=1
+#net/ipv6/conf/default/forwarding=1
+#net/ipv6/conf/all/forwarding=1
+
+# Turn on Source Address Verification in all interfaces to prevent some
+# spoofing attacks
+net/ipv4/conf/default/rp_filter=1
+net/ipv4/conf/all/rp_filter=1
+
+# Do not accept IP source route packets (we are not a router)
+net/ipv4/conf/default/accept_source_route=0
+net/ipv4/conf/all/accept_source_route=0
+net/ipv6/conf/default/accept_source_route=0
+net/ipv6/conf/all/accept_source_route=0
+
+# Disable ICMP redirects. ICMP redirects are rarely used but can be used in
+# MITM (man-in-the-middle) attacks. Disabling ICMP may disrupt legitimate
+# traffic to those sites.
+net/ipv4/conf/default/accept_redirects=0
+net/ipv4/conf/all/accept_redirects=0
+net/ipv6/conf/default/accept_redirects=0
+net/ipv6/conf/all/accept_redirects=0
+
+# Ignore bogus ICMP errors
+net/ipv4/icmp_echo_ignore_broadcasts=1
+net/ipv4/icmp_ignore_bogus_error_responses=1
+net/ipv4/icmp_echo_ignore_all=0
+
+# Don't log Martian Packets (impossible packets)
+net/ipv4/conf/default/log_martians=0
+net/ipv4/conf/all/log_martians=0
+
+# Change to '1' to enable TCP/IP SYN cookies This disables TCP Window Scaling
+# (http://lkml.org/lkml/2008/2/5/167)
+net/ipv4/tcp_syncookies=0
+
+#net/ipv4/tcp_fin_timeout=30
+#net/ipv4/tcp_keepalive_intvl=1800
+
+# normally allowing tcp_sack is ok, but if going through OpenBSD 3.8 RELEASE or
+# earlier pf firewall, should set this to 0
+net/ipv4/tcp_sack=1
+
+# Uncomment this to turn off ipv6 autoconfiguration
+#net/ipv6/conf/default/autoconf=0
+#net/ipv6/conf/all/autoconf=0
+
+# Uncomment this to enable ipv6 privacy addressing
+#net/ipv6/conf/default/use_tempaddr=2
+#net/ipv6/conf/all/use_tempaddr=2