scapy 构造na报文
时间: 2023-09-12 09:05:22 浏览: 179
scapy document
构造NA(Neighbor Advertisement)报文可以使用Scapy的IPv6和ICMPv6模块。NA报文用于告知邻居节点本机的IPv6地址和MAC地址发生了改变。构造NA报文的步骤如下:
1. 导入必要的模块:
```python
from scapy.all import *
```
2. 构造IPv6报文头:
```python
ipv6 = IPv6()
ipv6.dst = "ff02::1" # 目标地址为广播地址
ipv6.src = "2001:db8::1" # 源地址为本机IPv6地址
ipv6.nh = 58 # 下一跳头为ICMPv6
```
3. 构造ICMPv6报文头:
```python
icmpv6 = ICMPv6ND_NA()
icmpv6.R = 0 # Router标志位,0表示非路由器
icmpv6.S = 1 # Solicited标志位,1表示为请求的NA
icmpv6.O = 1 # Override标志位,1表示覆盖原有缓存项
icmpv6.target = "2001:db8::2" # 目标地址为邻居节点的IPv6地址
icmpv6.ndopt = ICMPv6NDOptDstLLAddr(lladdr="00:11:22:33:44:55") # LLADDR选项为邻居节点的MAC地址
```
4. 构造完整的数据包:
```python
packet = ipv6/icmpv6
```
5. 使用send()函数发送数据包:
```python
send(packet)
```
完整代码示例:
```python
from scapy.all import *
ipv6 = IPv6()
ipv6.dst = "ff02::1" # 目标地址为广播地址
ipv6.src = "2001:db8::1" # 源地址为本机IPv6地址
ipv6.nh = 58 # 下一跳头为ICMPv6
icmpv6 = ICMPv6ND_NA()
icmpv6.R = 0 # Router标志位,0表示非路由器
icmpv6.S = 1 # Solicited标志位,1表示为请求的NA
icmpv6.O = 1 # Override标志位,1表示覆盖原有缓存项
icmpv6.target = "2001:db8::2" # 目标地址为邻居节点的IPv6地址
icmpv6.ndopt = ICMPv6NDOptDstLLAddr(lladdr="00:11:22:33:44:55") # LLADDR选项为邻居节点的MAC地址
packet = ipv6/icmpv6
send(packet)
```
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