This article describes a sniffer for Windows. WinSniff is an application for capturing packets on the network. It displays all the packets that are transmitted on the local network and gives detailed information about each header in the packet. In order to keep it simple, I am not dealing with application level protocols. If you are interested, you can add features to support various application level protocols such as SMTP, FTP, NetBIOS etc
一個簡單的端口掃描程序：
addstr = "發現端口" & Str(port) & "打開" & Space(5) Select Case port Case 7 plus = "ECHO服務" Case 21 plus = "FTP服務★★★★★" Case 25 plus = "SMTP服務★★" Case 43 plus = "Whois服務" Case 53 plus = "DNS服務☆" Case 80 plus = "HTTP服務★★★★★" Case 81 plus = "HOSTS2名稱服務" Case 99 plus = "NCX99后門★★★★★" Case 110 plus = "POP3服務★★★★★" Case 111 plus = "Sun RPC服務★★" Case 135 plus = "本地服務" Case 137 plus = "NetBIOS 名稱服務/流影POP" Case 138 plus = "NetBIOS 數據存儲服務" Case 139 plus = "NetBIOS 會議服務★★★" Case 119 plus = "NNTP虛擬服務" Case 163 plus = "SNMP服務" Case 443 plus = "https服務" Case 512 plus = "遠程執行服務" Case 513 plus = "login, remote login" Case 514 plus = "cmd, exec with auto auth." Case 600 plus = "Sun IPC服務器" Case 1080 plus = "SOCKS代理服務★★★" Case 1433 plus = "SQL服務器★★★" Case 3128 plus = "HTTP代理服務" Case 7626 plus = "木馬冰河★★★★★" Case 8080 plus = "HTTP代理服務" Case Else plus = "未知服務!"
