日期:2014-05-16  浏览次数:20599 次

我使用过的Linux命令之arp - 操作ARP缓存

我使用过的Linux命令之arp - 操作ARP缓存

本文链接:http://codingstandards.iteye.com/blog/774573 ?? (转载请注明出处)

用途说明

显示和修改地址解析协议(ARP)使用的“IP 到物理”地址转换表。手册页上的说法是“操作系统ARP缓存”,manipulate the system ARP cache。

常用参数

arp 显示当前的ARP缓存列表。

arp -s ip mac 添加静态ARP记录,如果需要永久保存,应该编辑/etc/ethers文件。

arp -f 使/etc/ethers中的静态ARP记录生效。

使用示例

示例一

[root@rhel55 src]# arp
Address????????????????? HWtype? HWaddress?????????? Flags Mask??????????? Iface
192.168.6.106??????????? ether?? 70:1A:04:CC:2B:21?? C???????????????????? eth0

[root@rhel55 src]# ping 192.168.6.1
PING 192.168.6.1 (192.168.6.1) 56(84) bytes of data.
64 bytes from 192.168.6.1: icmp_seq=1 ttl=64 time=1.65 ms
64 bytes from 192.168.6.1: icmp_seq=2 ttl=64 time=0.888 ms
Ctrl+C
--- 192.168.6.1 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 999ms
rtt min/avg/max/mdev = 0.888/1.270/1.653/0.384 ms
[root@rhel55 src]# arp
Address????????????????? HWtype? HWaddress?????????? Flags Mask??????????? Iface
192.168.6.1????????????? ether?? 00:22:6B:8C:70:3D?? C???????????????????? eth0
192.168.6.106??????????? ether?? 70:1A:04:CC:2B:21?? C???????????????????? eth0

[root@rhel55 src]# vi /etc/ethers

192.168.6.1???? 00:22:6B:8C:70:3D

[root@rhel55 src]# arp -f
[root@rhel55 src]# arp
Address????????????????? HWtype? HWaddress?????????? Flags Mask??????????? Iface
192.168.6.1????????????? ether?? 00:22:6B:8C:70:3D?? CM ??????????????????? eth0
192.168.6.106??????????? ether?? 70:1A:04:CC:2B:21?? C???????????????????? eth0

?

Flags Mask,C表示arp cache中的内容,M表示是静态ARP entry。

示例二

[root@web ~]# arp
Address????????????????? HWtype? HWaddress?????????? Flags Mask??????????? Iface
218.23.142.41??????????? ether?? 00:05:DC:E3:1F:BC?? C???????????????????? eth1
192.168.6.12???????????? ether?? 00:19:0F:03:37:D3?? C???????????????????? eth0
218.23.142.42??????????? ether?? 00:15:E9:47:AE:74?? C???????????????????? eth1

问题思考

相关资料

【1】Guide to IP Layer Network Administration with Linux Address Resolution Protocol (ARP)

【2】百度空间 Linux Arp命令列表简单介绍

【3】51CTO.COM linux下防范arp欺骗攻击

【4】百度空间yk linux下arp攻击的解决方案[原]

【5】百度空间yk linux下arp攻击的解决方案续(完美解决版)[原]

【6】Guide to IP Layer Network Administration with Linux B.1. arp

?

返回 我使用过的Linux命令系列总目录

?