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- # 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
- # Controls source route verification
- net.ipv4.conf.default.rp_filter = 1
- # Do not accept source routing
- net.ipv4.conf.default.accept_source_route = 0
- # Controls the System Request debugging functionality of the kernel
- kernel.sysrq = 1
- # 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 = 68719476736
- # Controls the maximum number of shared memory segments, in pages
- kernel.shmall = 4294967296
- net.ipv4.conf.all.send_redirects = 0
- net.ipv4.conf.default.send_redirects = 0
- net.ipv4.tcp_max_syn_backlog = 1280
- net.ipv4.icmp_echo_ignore_broadcasts = 1
- net.ipv4.conf.all.accept_source_route = 0
- net.ipv4.conf.all.accept_redirects = 0
- net.ipv4.conf.all.secure_redirects = 0
- net.ipv4.conf.all.log_martians = 1
- net.ipv4.conf.default.accept_redirects = 0
- net.ipv4.conf.default.secure_redirects = 0
- net.ipv4.icmp_echo_ignore_broadcasts = 1
- net.ipv4.icmp_ignore_bogus_error_responses = 1
- net.ipv4.conf.default.rp_filter = 1
- net.ipv4.tcp_timestamps = 0
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