计算机网络大作业 NAT部分

git clone https://gitee.com/873314461/nat_stack.git
cd nat_stack
make

# 启动mininet
$ sudo python2 topo/nat_topo.py

# 打开xterm
mininet> xterm h1 h2 n1

# n1中启动NAT服务
./scripts/disable_arp.sh
./scripts/disable_icmp.sh
./scripts/disable_ip_forward.sh # Archlinux中需要将-p ip改成-p ipv4
./scripts/disable_tcp_rst.sh
export LD_LIBRARY_PATH=.;       # 设置lib路径
./nat                           # 启动NAT服务

# 在h2节点启动简易HTTP服务器
./scripts/disable_offloading.sh # 防止协议栈生成错误的checksum
python2 -m SimpleHTTPServer

# 在h1节点启动wget
./scripts/disable_offloading.sh # 防止协议栈生成错误的checksum
wget http://159.226.39.123:8000

tcp_stack
├── example             # 多线程和list例子程序
├── include             # 相关头文件
├── libipstack.so       # IP查找和发送数据包相关函数实现，参见相应头文件
├── main.c
├── Makefile
├──*nat.c               # NAT相关操作
├── nat-reference       # NAT参考实现
├── README.md
├── scripts             # 禁止协议栈脚本
└── topo                # Mininet拓扑文件夹