Add the following entry to /etc/rc.local
echo 30 > /proc/sys/net/ipv4/tcp_fin_timeout echo 60000 > /proc/sys/net/ipv4/tcp_keepalive_time echo 15000 > /proc/sys/net/ipv4/tcp_keepalive_intvl echo 0 > /proc/sys/net/ipv4/tcp_window_scaling |
Add the following to /etc/sysctl.conf
# Disables packet forwarding net.ipv4.ip_forward = 0 # Enables source route verification net.ipv4.conf.default.rp_filter = 1 # Disables the magic-sysrq key kernel.sysrq = 0 net.ipv4.ip_local_port_range = 1204 65000 net.core.rmem_max = 262140 net.core.rmem_default = 262140 net.ipv4.tcp_rmem = 4096 131072 262140 net.ipv4.tcp_wmem = 4096 131072 262140 net.ipv4.tcp_sack = 0 net.ipv4.tcp_timestamps = 0 net.ipv4.tcp_window_scaling = 0 net.ipv4.tcp_keepalive_time = 60 net.ipv4.tcp_keepalive_intvl = 15 net.ipv4.tcp_fin_timeout = 30 |
Add the following as the last entry in /etc/rc.local
sysctl -p /etc/sysctl.conf |
Reboot the system.
Use this command to increase the size of the transmit buffer:
tcp_recv_hiwat ndd /dev/tcp 8129 32768 |