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DebianϵÁÐ - É趨 TCP/IP ÍøÂç


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ÈÏʶ /proc Îļþϵͳ

/proc ÎļþϵͳҲ¿É³ÆÎª procfs £¬¿ÉÒÔ¸øÓ¦ÓóÌÐòÌṩÄں˵ÄʵʱÔË×÷״̬¡£procfs ÔÚ¿ª»úÆÚ¼ä»á±»¹ÒÔØµ½/procĿ¼£¬ÄãµÄ /etc/fstab ¿ÉÒÔÕÒµ½£º

# <file system> <mount point> <type> <options> <dump> <pass> 
proc /proc proc defaults 0 0

µ±¶ÁÈ¡ /proc Ŀ¼ÏµÄÎļþʱ£¬Äں˻áʵʱÌṩ¸ÃÎļþËùÏóÕ÷µÄһЩÐÅÏ¢¡£±ÈÈçÎÒÃÇÏëÖªµÀÄÚ´æºÍ½»»»¿Õ¼äµÄÓÃÁ¿£º

~cat /proc/meminfo MemTotal: 126052 kB MemFree: 81164 kB Buffers: 3908 kB Cached: 26352 kB SwapCached: 0 kB Active: 25816 kB Inactive: 9484 kB HighTotal: 0 kB HighFree: 0 kB LowTotal: 126052 kB LowFree: 81164 kB SwapTotal: 369452 kB SwapFree: 369452 kB Dirty: 40 kB Writeback: 0 kB Mapped: 8240 kB Slab: 6412 kB CommitLimit: 432476 kB Committed_AS: 12512 kB PageTables: 304 kB VmallocTotal: 905208 kB VmallocUsed: 2628 kB VmallocChunk: 902536 kB

ÄÚºËÀïµÄijЩ×ÓϵͳÔÚ /proc ϶¼ÓÐ×Ô¼º×¨ÊôµÄĿ¼¡£±ÈÈçÍøÂç×Óϵͳ¶ÔÓ¦µÄĿ¼Ϊ /proc/net/¡£Äã¿ÉÒÔÕÒµ½ARP±í¡¢TCPÁ¬½Ó״̬¡¢ÒÔ¼°Â·ÓÉ±í¡£

/proc ϵĴó¶àÊýÎļþ¶¼ÊÇÖ»¶ÁµÄ£¬Ö»ÓÐÉÙÊýÎļþ¿É¶Á¿Éд£¬Èç¹ûÄãÏëÒªÔÊÐí°ü´Óij½Ó¿ÚÁ÷µ½ÁíÒ»½Ó¿Ú£º

# echo 1 > /proc/sys/net/ipv4/ip_forward

É趨Ö÷»úÃû³Æ

´ó¼Ò¶¼ÓÐÊôÓÚ×Ô¼ºµÄÃû×Ö£¬Ö÷»úÔÚÍøÂçÉÏÒ²ÐèÒªÒ»¸öÄܹ»Ê¶±ðµÄÃû³Æ²ÅÐС£É趨Ö÷»úÃû³ÆµÄÃüÁîΪ:

# hostname Ö÷»úÃû

Èç¹ûÒªÉèÖÃËùÊôÓÚµÄÓò£¬ÔòʹÓãº

# domainname ÓòÃû³Æ

ʹÓà --fqdn ¿ÉÏÔʾÍêÕûµÄÏÞ¶¨ÓòÃû (fully qualified domain name,FQDN)

DHCP ·þÎñ

DHCP (Dynamic Host Configuration Protocol, ¶¯Ì¬Ö÷»úÅäÖÃЭÒé)¡£Ëü¾­³£±»ÓÃÀ´¶¯Ì¬µÄ·ÖÅäIPµØÖ·¸ø¾ÖÓòÍøÉϵÄÖ÷»ú¡£¹ÜÀíÔ±ÊÂÏÈÔÚDHCP·þÎñÆ÷ÉÏÉèÖÃÒÍ×åIPµØÖ··¶Î§ÒÔ¼°Ïà¹ØµÄIP²ÎÊý£¨Íø¹ØµØÖ·£¬DNS·þÎñÆ÷µØÖ·£¬Ö÷»úÃû³Æ£¬ÑÚÂëµÈ£©£¬ÈþÖÓòÍøÉϵļÆËã»ú¿ª»úûÓлñµÃIPµØÖ·Ç°¿É¶Ô¾ÖÓòÍø¹ã²¥Ò»¸öDHCPµÄÇëÇó£¬DHCP·þÎñÆ÷ÊÕµ½ºó»á·ÖÅäÒ»¸ö´øÓÐÓÐЧÆÚÏÞµÄIPµØÖ·ÒÔ¼°²Ù×÷²ÎÊý¡£µ±µ½ÁËÓÐЧÆÚÏÞʱ¼äµÄÒ»°ëʱ¿ÉÒÔÐøÔ¼¡£ÏÖÔÚµÄLinuxϵͳ¼¸ºõ¶¼ÓÐDHCPÇëÇóµÄ¹¦ÄÜ¡£ÏëҪͨ¹ýDHCP»ñµÃIPµØÖ·µÄÃüÁîºÜ¼òµ¥£º

# dhcpcd eh0

¼ÜÉè DHCP ·þÎñÆ÷

ÓÐЩ“¶à¹¦ÄÜ”µÄ·ÓÉÆ÷Ò»°ã¶¼ÄÚÖÃÁËDHCP·þÎñµÄ¹¦ÄÜ£¬¶ÔÓÚ¼ÒÍ¥ÍøÂç»òÊÇСÐÍ°ì¹«ÍøÂç¶¼ÊDz»´íµÄÑ¡Ôñ£¬ÕâÑù²»ÐèÒªÓÐ̨¼ÆËã»úÕûÌ쿪»ú¡£È»¶ø¶ÔÓÚÉԾ߹æÄ£µÄÍøÂ绹ÊÇÑ¡ÔñLinux»úÆ÷À´×öDHCP·þÎñÆ÷±È½ÏºÃ¡£Ä¿Ç°³£ÓõÄDHCP·þÎñÈí¼þÊÇISC DHCP server¡£

¶ÔÓÚDHCP·þÎñµÄÅäÖÃÐÅÏ¢¶¼±£´æÔÚdhcpd.confÎļþÀï¡£¾ÙÀý£º

option domain-name "ÓòÃû³Æ";
option domain-name-servers dns·þÎñÆ÷µØÖ·1,dns·þÎñÆ÷µØÖ·2,... ;
#ĬÈÏ×âÓÃʱ¼ä(Ãë)
default-lease-time 1600;
#×âÓÃʱ¼äµÄÉÏÏÞ
max-lease-time 7200;
#¼Ç¼
log-facility local7;

#subnet ÉùÃ÷
subnet 172.16.1.0 netmask 255.255.255.0 {
  range 172.16.1.10 172.16.1.50;
  option routers ·ÓɵØÖ·;
}
ÏÂÃæÒª½¨Á¢Æð×ÓÍø²¢ÔÚ/etc/hosts ºÍ /etc/networks ÎļþÀï×öÏÂÉèÖá£
UbuntuµÄDHCP·þÎñÆ÷ÉèÖÿɲο¼£º
ʹÓà dhcp3 ·þÎñΪ¿Í»§¶ËÀ´·ÖÅä IP µØÖ·¡£
¼ÙÉèÄãµÄ·þÎñÆ÷µÄIPÊÇ 192.168.0.1 £¬Íø¿¨ÊÇ eth0¡£ÄÇôÕû¸öÍøÂçÍø¶ÎΪ 192.168.0.0

1. °²×° dhcp3 ·þÎñÆ÷
¡¡
sudo apt-get install dhcp3-server
2. °²×°Ê±»áѯÎÊÔÚÄÄÒ»¿éÍø¿¨ÉÏʹÓÃdhcpµÄ·ÖÅä·þÎñ£¬ÎÒÃÇÊäÈë eth0 Ò²¾ÍÊDZ¾µØµÄÍø¿¨¡£

3. ÅäÖÃ dhcp3 ·þÎñ
¡¡
sudo gedit /etc/dhcp3/dhcpd.conf
²éÕÒµ½ÕâÁ½´¦£º
¡¡
option domain-name "example.org"; 
option domain-name-servers ns1.example.org, ns2.example.org;
ÐÞ¸ÄΪ£º ¡¡ option domain-name "yourname.3322.org";
option domain-name-servers 202.96.128.86, 202.96.128.143;
ÆäÖÐ domain-name-servers µÄ IP ¿ÉÒÔͨ¹ýÉÏÍøºó£¬²é¿´ /etc/resolv.conf »ñµÃ£º ¡¡ more /etc/resolv.conf ÔÙ²éÕÒµ½£º ¡¡
#subnet 10.254.239.0 netmask 255.255.255.224 {
# range 10.254.239.10 10.254.239.20;
# option routers rtr-239-0-1.example.org, rtr-239-0-2.example.org;
#}

ÐÞ¸ÄΪ£º¡¡

subnet 192.168.0.0 netmask 255.255.255.0 { 
#ÒÔϽ«IP¶Î 192.168.0.10-192.168.1.100 ºÍ 192.168.0.150-192.168.0.250 ×÷Ϊ¶¯Ì¬IP·ÖÅä¡£ range 192.168.0.10 192.168.0.100; range 192.168.0.150 192.168.0.250; 
££Ö¸¶¨¿Í»§¶ËĬÈÏÍø¹ØÎª 192.168.0.1 option routers 192.168.0.1; 
££ÒÔÏÂÊÇÇ¿ÖÆÖ¸¶¨Íø¿¨µØÖ·Îª 00:50:56:c0:0d:01 µÄIPΪ 192.168.0.2 ÆäÖÐ server2 £¬¿ÉÒÔËæ±ãÌîд host server2 { hardware ethernet 00:50:56:c0:0d:01; fixed-address 192.168.0.2; } }

4. ±£´æÅäÖÃÎļþ
5. ÖØÐÂÆô¶¯·þÎñ£º
¡¡
sudo /etc/init.d/dhcp3-server restart

7. Èç¹ûÐèÒª¸ü¸Ä dhcp3 ·þÎñ¼àÌýµÄÍø¿¨£¬¿ÉÒÔÐÞ¸Ä /etc/default/dhcp3-server

sudo gedit /etc/default/dhcp3-server

²éÕÒ£º
INTERFACES="eth0"
ÐÞ¸ÄΪ£º
INTERFACES="eth1"

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