CentOS 6.6下雙網(wǎng)卡共享上網(wǎng)配置

時(shí)間:2015-10-15 01:03來(lái)源:blog.51cto.com作者:l19891223j 的BLOG 舉報(bào) 點(diǎn)擊:494次

?	實(shí)現(xiàn)方式：通過(guò)設(shè)置iptables的nat規(guī)則，使內(nèi)網(wǎng)服務(wù)器可以訪問(wèn)Internet

1.系統(tǒng)環(huán)境：

[root@MySQL-server?~]#?cat?/etc/redhat-release? CentOS?release?6.6?(Final) [root@MySQL-server?~]#?uname?-r 2.6.32-504.el6.x86_64 [root@MySQL-server?~]#?uname?-m x86_64

2.準(zhǔn)備兩臺(tái)虛擬機(jī)

========================================================================== 主機(jī)名????????????????????????外網(wǎng)??????????內(nèi)網(wǎng) Web-Lnmp02????????????????????eth0：192.168.73.171??eth1:192.168.56.130 MySQL-server?????????????????????eth0：192.168.56.129 DNS：192.168.73.2 注：內(nèi)網(wǎng)使用僅主機(jī)模式連接，手動(dòng)設(shè)置IP ??外網(wǎng)使用NAT模式連接，使用dhcp動(dòng)態(tài)獲取的IP ==========================================================================

3.配置Web-Lnmp02服務(wù)器

?1）開(kāi)啟IP轉(zhuǎn)發(fā)功能

[root@Web-Lnmp02?network-scripts]#?echo?"net.ipv4.ip_forward?=?1">>/etc/sysctl.con? [root@Web-Lnmp02?network-scripts]#?sysctl?-p

?2）配置iptables

[root@Web-Lnmp02?~]#?iptables?-F [root@Web-Lnmp02?~]#?iptables?-P?INPUT?ACCEPT [root@Web-Lnmp02?~]#?iptables?-P?FORWARD?ACCEPT? [root@Web-Lnmp02?~]#?iptables?-t?nat?-A?POSTROUTING?-o?eth0?-j?MASQUERADE 或者 ???????????????????? iptables?-t?nat?-A?POSTROUTING -s ip -o?eth0?-j?MASQUERADE [root@Web-Lnmp02?~]#?/etc/init.d/iptables?save [root@Web-Lnmp02?~]#?/etc/init.d/iptables?restart 說(shuō)明： ??iptables?-F?#清除原有的filter有中的規(guī)則? ??iptables?-t?nat?-F?#清除原有的nat表中的規(guī)則 ??iptables?-P?FORWARD?ACCEPT?#缺省允許IP轉(zhuǎn)發(fā)

4.配置MySQL-server

?1）IP設(shè)置

[root@MySQL-server?~]#?cat?/etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE=eth0 TYPE=Ethernet ONBOOT=yes NM_CONTROLLED=yes BOOTPROTO=none USERCTL=no HWADDR=00:0c:29:e2:0e:85 IPADDR=192.168.56.129 NETMASK=255.255.255.0 GATEWAY=192.168.56.130 IPV6INIT=no

?2）DNS設(shè)置

?	[root@MySQL-server?~]#?cat?/etc/resolv.conf? ;?generated?by?/sbin/dhclient-script search?localdomain nameserver?192.168.73.2

?

5.在MySQL-server上測(cè)試是否能訪問(wèn)internet

[root@MySQL-server?~]#?ping?www.baidu.com PING?www.a.shifen.com?(61.135.169.125)?56(84)?bytes?of?data. 64?bytes?from?61.135.169.125:?icmp_seq=1?ttl=127?time=5.89?ms 64?bytes?from?61.135.169.125:?icmp_seq=2?ttl=127?time=9.49?ms 64?bytes?from?61.135.169.125:?icmp_seq=3?ttl=127?time=6.14?ms

總結(jié)

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