||Sysctl variable ||Default 2.6 ||Suggested||
||net.ipv4.conf.all.arp_filter ||0 ||1||
||net.ipv4.conf.all.rp_filter ||0 ||1||
||net.ipv4.tcp_max_syn_backlog ||1024 ||4096||
||net.ipv4.ipfrag_low_thresh ||196608 ||262144||
||net.ipv4.ipfrag_high_thresh ||262144 ||393216||
||net.core.netdev_max_backlog ||300 ||2000||
||net.core.rmem_default ||135168 ||262144||
||net.core.rmem_max ||131071 ||8388608||
||net.core.wmem_default ||135168 ||262144||
||net.core.wmem_max ||131071 ||8388608||
||net.ipv4.ip_local_port_range ||32768 61000 ||1024 65535||
||net.ipv4.ip_no_pmtu_disc ||0 ||0||
||net.ipv4.tcp_rmem ||4096 87380 174760 ||8192 262144 4194304||
||net.ipv4.tcp_sack ||1 ||0||
||net.ipv4.tcp_syncookies ||1 ||0||
||net.ipv4.tcp_timestamps ||1 ||0||
||net.ipv4.tcp_window_scaling ||1 ||1||
||net.ipv4.tcp_wmem ||4096 16384 131072 ||8192 262144 4194304||