update (Fri Nov 22 07:38:52 PM CST 2024)

Jerry-Terrasse · Nov 22, 2024 · 4e044be · 4e044be
1 parent 6891517
commit 4e044be
Showing 1 changed file with 13 additions and 0 deletions.
diff --git a/docs/2024.md b/docs/2024.md
@@ -42,11 +42,24 @@ PostDown = iptables -t nat -D PREROUTING -p tcp -m tcp --dport <outer_port> -j D
 
 #### 检测客户端连通性
 
+nmap:
+
 ```shell
 nmap -6 -p <端口号> <IPv6地址>
 nmap -p <端口号> <IPv4地址>
 ```
 
+nc:
+
+```shell
+# TCP
+nc -l <port> # server
+nc <addr> <port> # client
+# UDP
+nc -u -l <port> # server
+nc -u <addr> <port> # client
+```
+
 ### 11.14
 
 #### 纯ipv6服务器访问ipv4