Glibc free()error sysctl configuration

How to configure is explain below:-

1>

Turn off the tcp_sack.
net.ipv4.tcp_sack = 0

 2>

Turn off the tcp_timestamps.
net.ipv4.tcp_timestamps = 0

 3>

Enable TCP SYN Cookie Protection.
net.ipv4.tcp_syncookies = 1

 4>

Enable ignoring broadcasts request.
net.ipv4.icmp_echo_ignore_broadcasts = 1

 5>

Enable bad error message Protection.
net.ipv4.icmp_ignore_bogus_error_responses = 1

 6>

Log Spoofed Packets, Source Routed Packets, Redirect Packets.
net.ipv4.conf.all.log_martians = 1

 7>

Increases the size of the socket queue (effectively, q0),
net.ipv4.tcp_max_syn_backlog = 1024

 8>

Increase the tcp-time-wait buckets pool size.
net.ipv4.tcp_max_tw_buckets = 1440000

 9>

Allowed local port range.
net.ipv4.ip_local_port_range = 16384 65536

10>

After you make the changes to the file you need to run .
Quote
/sbin/sysctl -p
and
Quote
sysctl -w net.ipv4.route.flush=1
to enable the changes without a reboot.