关于scapy
Scapy的是一个强大的交互式数据包处理程序(使用python编写)。它能够伪造或者解码大量的网络协议数据包,能够发送、捕捉、匹配请求和回复包等等。它可以很容易地处理一些典型操作,比如端口扫描,tracerouting,探测,单元测试,攻击或网络发现(可替代hping,NMAP,arpspoof,ARP-SK,arping,tcpdump,tethereal,P0F等)。最重要的他还有很多更优秀的特性——发送无效数据帧、注入修改的802.11数据帧、在WEP上解码加密通道(VOIP)、ARP缓存攻击(VLAN)等,这也是其他工具无法处理完成的。
安装:
sudo apt-get install scapy
测试:
安装barefoot修改过的scapy(支持vxlan)
barefoot ReadMe
Barefoot modified scapy, which supports VXLAN. Waiting for VXLAN support to be
added to the main scapy repo.
This modified repo now also supports a ERSPAN-like header.
To install:
sudo python setup.py install
To check that the modifications work, open a scapy CLI (just type 'scapy' in a
terminal) and type the following:
Welcome to Scapy (2.2.0-dev)
>>> load_contrib('vxlan')
>>> Ether()/IP()/UDP()/VXLAN()/Ether()/IP()/TCP()
<Ether type=0x800 |<IP frag=0 proto=udp |<UDP dport=4789 |<VXLAN |<Ether
type=0x800 |<IP frag=0 proto=tcp |<TCP |>>>>>>>
>>> load_contrib('erspan')
>>> Ether()/IP()/GRE()/ERSPAN()/Ether()/IP()/TCP()
<Ether type=0x800 |<IP frag=0 proto=gre |<GRE proto=0x22eb |<ERSPAN |<Ether
type=0x800 |<IP frag=0 proto=tcp |<TCP |>>>>>>>
>>>
Note how the UDP dport and the GRE proto number are updated automatically.