LinuxÄں˲ÎÊýµ÷ÓÅ
1. ²é¿´socket״̬
server1:~ # netstat -n | awk '/^tcp/ {++S[$NF]} END {for(a in S) print a, S[a]}'
TIME_WAIT 257
CLOSE_WAIT 117
FIN_WAIT2 2
ESTABLISHED 228
2. #vi /etc/sysctl.conf
3. Ôö¼Ó
net.ipv4.tcp_keepalive_time = 120
net.ipv4.tcp_keepalive_probes = 2
net.ipv4.tcp_keepalive_intvl = 75
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_fin_timeout = 30
net.ipv4.ip_local_port_range = 1024 65000
4. ±£´æ£¬Ö´ÐÐ#sysctl –pÉúЧ
Ïà¹ØÎĵµ£º
×ÜÀÀ
ÓÃiptables -ADC À´Ö¸¶¨Á´µÄ¹æ
Ôò
£¬-AÌí¼Ó -Dɾ³ý -C ÐÞ¸Ä
iptables - [RI] chain rule num rule-specification[option]
ÓÃiptables - RI ͨ¹ý¹æÔòµÄ˳ÐòÖ¸¶¨
iptables -D chain rule num[option]
ɾ³ýÖ¸¶¨¹æÔò
iptables -[LFZ] [chain][option]
ÓÃiptables -LFZ Á´Ãû [Ñ¡Ïî]
iptables -[NX] chain
ÓÃ -NX ......
1.
linux
ÃüÁîµÄµ÷ÊÔʹÓÃ
ÒÔÏÂÊÇ´ÓÍøÉϲéÕÒÀ´µÄ
linux
ÃüÁî
zip
µÄʹÓ÷½·¨¡£Èç¹ûÓв»ÖªµÀÃüÁîÈçºÎʹÓÃÄã¿ÉÒÔ
man+[
ÃüÁî
]
»òÕßÊÇ
[
ÃüÁî
]+
“
-h
”£¬À´²é¿´ÃüÁîµÄʹÓ÷½·¨¡£
zip
¹¦ÄÜ˵Ã÷£ºÑ¹ËõÎļþ¡£
Óï¡¡¡¡·¨£º
zip
[-AcdDfFghj ......
ÎÒÃÇÔÚ¸ãÐÔÄܲâÊÔµÄʱºò£¬¶Ôºǫ́·þÎñÆ÷µÄCPUÀûÓÃÂʼà¿ØÊÇÒ»¸ö³£ÓõÄÊֶΡ£·þÎñÆ÷µÄCPUÀûÓÃÂʸߣ¬Ôò±íÃ÷·þÎñÆ÷ºÜ·±Ã¦¡£Èç¹ûǰ̨ÏìӦʱ¼äÔ½À´Ô½´ó£¬¶øºǫ́CPUÀûÓÃÂÊʼÖÕÉϲ»È¥£¬ËµÃ÷ÔÚij¸öµØ·½ÓÐÆ¿¾±ÁË£¬ÏµÍ³ÐèÒªµ÷ÓÅ¡£Õâ¸öÊǼ´Ê¹²»¶®¼¼ÊõµÄÈ˶¼ÈÝÒ×Àí½âµÄÊÂÇé¡£
ÉÏÃæÀí½â¶ÔÂð£¿ÎÒ¸öÈ˾õµÃ²»Ê®·Ö× ......
#!/bin/sh
/sbin/modprobe ip_conntrack_ftp
CONNECTION_TRACKING="1"
ACCEPT_AUTH="0"
DHCP_CLIENT="0"
IPT="/sbin/iptables" # Location of iptables on your system
INTERNET="eth0" # Internet-connected interface
LO ......
Ubuntu10.04¾µÏñ»á³öÏÖÎÞ·¨Ê¶±ð¼üÅÌÊäÈë¡£ÔڵǼ»Ãæʱ£¬²»ÄÜÊäÈëÃÜÂ룬ÎÞ·¨Õý³£½øÈëϵͳ¡£ ½â¾ö°ì·¨£º £¨1£© ¿ª»§ÆÁÄ»¼üÅ̹¦ÄÜ ÔÚÉÏͼ¿ª»ú½çÃæÔÚÓÒϽǵ¥»÷СÈËͼ°¸£¬ÔÙµ¥»÷“Universal Access Perferences”£¬³ö»÷“Universal Access Perferences”¶Ô»°¿ò£¬ÔÚ¶Ô»°¿òÖÐÑ¡ÖГUse on-screen keybo ......