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[kernel-cn.git] / debian / postinst

diff --git a/debian/postinst b/debian/postinst
index 3b3d622..86621d5 100755 (executable)
--- a/debian/postinst
+++ b/debian/postinst
@@ -311,7 +311,6 @@ fi
 # default kernel parameters
 rm -f /etc/sysctl.conf.$$
 cat > /etc/sysctl.conf.$$ <<EOF
-kernel.exec-shield=3
 kernel.maps_protect=1
 net.core.rmem_default=1048576
 net.core.wmem_default=1048576
@@ -325,9 +324,8 @@ net.ipv4.icmp_echo_ignore_broadcasts=1
 net.ipv4.icmp_ignore_bogus_error_responses=1
 net.ipv4.ip_forward=0
 net.ipv4.ip_local_port_range=10000 65000
-net.ipv4.tcp_congestion_control=cubic
 net.ipv4.tcp_ecn=0
-net.ipv4.tcp_max_syn_backlog=8192
+net.ipv4.tcp_max_syn_backlog=1024
 net.ipv4.tcp_retries1=2
 net.ipv4.tcp_rfc1337=1
 net.ipv4.tcp_syncookies=1
@@ -336,7 +334,7 @@ EOF
 
 # old kernel params
 if [ -e /etc/sysctl.conf ]; then
-    egrep -v 'net\.core\.(r|w)mem_max|net\.ipv4\.tcp_(r|w)mem|vm\.bdflush|net\.ipv4\.ip_local_port_range|kernel\.rtsig-max|net\.ipv4\.tcp_syncookies' \
+    egrep -v 'net\.core\.(r|w)mem_max|net\.ipv4\.tcp_(r|w)mem|vm\.bdflush|net\.ipv4\.ip_local_port_range|kernel\.rtsig-max|net\.ipv4\.tcp_syncookies|kernel\.exec-shield|net\.ipv4\.tcp_max_syn_backlog|net\.ipv4\.tcp_congestion_control' \
         /etc/sysctl.conf >> /etc/sysctl.conf.$$
 fi