日期:2014-05-16  浏览次数:20729 次

Linux下如何实现不同网段之间的访问

 本实例要说明的是:实现10.0.0.0/24网段与192.168.2.0/24网段相互访问.

  步骤1:查看本机IP地址

  [root@localhost root]# ifconfig

  eth0   Link encap:Ethernet HWaddr 00:0C:29:A7:6E:77

  inet addr:10.0.0.120 Bcast:10.0.0.255 Mask:255.255.255.0

  UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

  RX packets:2418 errors:0 dropped:0 overruns:0 frame:0

  TX packets:1293 errors:0 dropped:0 overruns:0 carrier:0

  collisions:0 txqueuelen:100

  RX bytes:1000347 (976.9 Kb) TX bytes:192592 (188.0 Kb)

  Interrupt:10 Base address:0x2024

  步骤2:添加路由规则

  [root@localhost root]# route add -net 192.168.2.0/24 eth0

  步骤3:查看路由规则

  [root@localhost root]# route

  Kernel IP routing table

  Destination   Gateway     Genmask     Flags Metric Ref  Use Iface

  10.0.0.0    *        255.255.255.0  U   0   0    0 eth0

  192.168.2.0   *        255.255.255.0  U   0   0    0 eth0

  169.254.0.0   *        255.255.0.0   U   0   0    0 eth0

  注:route规则中,必须同时存在两个网段,否则,一个网段的IP地址将无法访问到另一网段的IP地址。

  步骤4:检测本地机(IP:10.0.0.120)与远程机(IP:192.168.2.80)是否可互访.

  [root@localhost root]# ping 192.168.2.80

  PING 192.168.2.80 (192.168.2.80) 56(84) bytes of data.

  64 bytes from 192.168.2.80: icmp_seq=1 ttl=127 time=5.51 ms

  64 bytes from 192.168.2.80: icmp_seq=2 ttl=127 time=3.17 ms

  步骤5:删除路由规则

  [root@localhost root]# route del -net 192.168.2.0/24 eth0