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Install
Works with every agent the skills CLI supports.
npx skills add https://github.com/chaterm/terminal-skills --skill tcp-ip- 01
Install
Run the command in your project. The CLI asks which agents to install for.
- 02
Describe the task
Ask your agent for something this skill covers. It loads tcp-ip automatically when relevant.
- 03
Review the result
The agent follows the SKILL.md steps, scripts and references bundled with the skill.
SKILL.md
The instructions your agent reads when the skill is triggered.
TCP/IP 网络诊断
概述
TCP/IP 协议栈相关的网络诊断、连通性测试、端口排查等技能。
连通性测试
# Ping 测试
ping -c 4 hostname
ping -i 0.2 hostname # 间隔 0.2 秒
# 路由追踪
traceroute hostname
traceroute -n hostname # 不解析域名
mtr hostname # 实时追踪
# 端口连通性
telnet hostname 80
nc -zv hostname 80
nc -zv hostname 80-100 # 端口范围
网络配置
# 查看网络接口
ip addr
ip link show
ifconfig # 传统命令
# 查看路由表
ip route
route -n
netstat -rn
# 查看 ARP 表
ip neigh
arp -a
# DNS 查询
nslookup hostname
dig hostname
dig +short hostname
host hostname
端口与连接
# 查看监听端口
ss -tlnp # TCP 监听
ss -ulnp # UDP 监听
netstat -tlnp
# 查看所有连接
ss -tanp
netstat -anp
# 查看特定端口
ss -tlnp | grep :80
lsof -i :80
# 连接统计
ss -s
netstat -s
抓包分析
# tcpdump 基础
tcpdump -i eth0
tcpdump -i any port 80
tcpdump -i eth0 host 192.168.1.1
tcpdump -i eth0 -w capture.pcap
# 常用过滤
tcpdump -i eth0 'tcp port 80'
tcpdump -i eth0 'host 10.0.0.1 and port 443'
tcpdump -i eth0 'tcp[tcpflags] & tcp-syn != 0'
# 读取抓包文件
tcpdump -r capture.pcap
tcpdump -r capture.pcap -A # 显示 ASCII
常见场景
场景 1：排查网络不通
# 1. 检查本地网络
ip addr
ip route
# 2. 测试网关连通性
ping gateway_ip
# 3. 测试目标连通性
ping target_ip
traceroute target_ip
# 4. 检查 DNS
nslookup target_hostname
场景 2：排查端口不通
# 1. 检查服务是否监听
ss -tlnp | grep :port
# 2. 检查防火墙
iptables -L -n
firewall-cmd --list-all
# 3. 从远程测试
nc -zv target_ip port
场景 3：排查连接超时
# 1. 检查网络延迟
ping -c 10 target
# 2. 检查路由
mtr target
# 3. 抓包分析
tcpdump -i eth0 host target -w debug.pcap
故障排查
| 问题 | 排查方法 |
|---|---|
| 网络不通 | ping, traceroute, 检查路由 |
| DNS 解析失败 | nslookup, dig, 检查 /etc/resolv.conf |
| 端口不通 | ss -tlnp, 检查防火墙 |
| 连接超时 | mtr, tcpdump 抓包分析 |
| 连接被拒绝 | 检查服务状态、端口监听 |
FAQ
What does the tcp-ip skill do?
TCP/IP 网络诊断与排查
How do I install tcp-ip?
Run npx skills add https://github.com/chaterm/terminal-skills --skill tcp-ip in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/tcp-ip/ (personal) or .claude/skills/tcp-ip/ (project).
Which AI agents can use tcp-ip?
Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.
Is tcp-ip safe to install?
No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.
Who maintains tcp-ip?
It is published by chaterm in chaterm/terminal-skills. It has 126 recorded installs.
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