# Kernel sysctl configuration file for Red Hat Linux
#
# For binary values, 0 is disabled, 1 is enabled.  See sysctl(8) and
# sysctl.conf(5) for more details.

# Controls IP packet forwarding
net.ipv4.ip_forward = 0
net.ipv4.tcp_wmem = 4096 65536 16777216
net.ipv4.tcp_rmem = 4096 87380 16777216
net.core.wmem_default = 2097152
net.core.wmem_max = 16777216
net.core.rmem_max = 16777216
net.core.rmem_default = 2097152
net.core.wmem_default = 2097152
net.ipv4.tcp_mem= 8388608 8388608 8388608

# Controls source route verification
net.ipv4.conf.default.rp_filter = 1
net.ipv4.conf.all.rp_filter = 1
# Do not accept source routing
net.ipv4.conf.default.accept_source_route = 0
net.ipv4.tcp_fin_timeout = 15
net.ipv4.tcp_keepalive_time = 1800
net.ipv4.tcp_window_scaling = 1
net.ipv4.tcp_sack = 1
net.ipv4.tcp_timestamps = 1
net.ipv4.tcp_max_syn_backlog = 2048
# Controls the System Request debugging functionality of the kernel
kernel.sysrq = 0
net.ipv4.tcp_max_orphans = 131072
# Controls whether core dumps will append the PID to the core filename
# Useful for debugging multi-threaded applications
kernel.core_uses_pid = 1

# Controls the use of TCP syncookies
net.ipv4.tcp_syncookies = 1

# Controls the maximum size of a message, in bytes
kernel.msgmnb = 65536

# Controls the default maxmimum size of a mesage queue
kernel.msgmax = 65536

# Controls the maximum shared segment size, in bytes
kernel.shmmax = 4294967295

# Controls the maximum number of shared memory segments, in pages
kernel.shmall = 268435456
net.ipv4.netfilter.ip_conntrack_tcp_timeout_syn_recv = 30
net.ipv4.netfilter.ip_conntrack_tcp_timeout_time_wait = 30
net.ipv4.netfilter.ip_conntrack_tcp_timeout_fin_wait = 30
net.ipv4.netfilter.ip_conntrack_tcp_timeout_close_wait = 30
kernel.panic=5
net.ipv4.tcp_max_syn_backlog = 2048
net.netfilter.nf_conntrack_max = 50485760
net.nf_conntrack_max = 50485760
net.ipv4.netfilter.ip_conntrack_max = 50485760
net.ipv4.ip_conntrack_max = 262144