How to Check if Telnet Is Running on a Server如何檢查,如果Telnet是運行在服務器上
Telnet (TELecommunication NETwork) is a unsecured network protocol used on the Internet or local area network (LAN) connections popularly to remotely access a server from client.遠程登錄(電信網)是一個不安全的網絡使用的通訊協定,在互聯網上或局域網( LAN )連接普及到遠程訪問服務器從客戶端。 The problem with Telnet is that the session is unencrypted with user name and password transmit across network in plain text, greatly increase security risk.問題與Telnet是,這次會議是加密與使用者名稱和密碼,傳輸網絡,在全國純文本,大大增加了安全風險。
If you want to identify and check if the Telnet service is running on your server, especially on web server or web host which exposes to worldwide attacks, here’s an easy way to perform the verification on Telnet process.如果您想要以查明和檢查,如果Telnet服務是運行在您的服務器上,尤其是對Web服務器或網頁主機,這暴露了全世界的攻擊,在這裡一種簡單的方法來執行驗證,對Telnet工作進程。
The easiest way to check if the Telnet process is running or not on the server is by using ps command that displays the currently running processes.最簡單的方式檢查,如果Telnet工作進程正在運行或不能在服務器上是使用的PS命令顯示目前正在運行的進程。 To check for any running Telnet process, login to the server via SSH (or physically using console, if you can Telnet into the server, obviously the Telnet service is running), and run the following command:檢查所有正在運行的Telnet進程,登錄到服務器通過SSH (或身體使用控制台,如果你能進入的Telnet服務器,很明顯, Telnet服務正在運行) ,並運行以下命令:
ps -aux | grep telnet的PS -輔助| grep的Telnet
If the result returns any other processes other than “grep telnet” line means that some Telnet process is running or session is opened.如果結果傳回任何其他程序以外的其他“ grep的Telnet ”路線,是指一些的Telnet進程正在運行或會議是開。
Alternatively, scan your server for open port 23, which Telnet normally uses to connect to.另外,掃描您的服務器的開放端口23 ,通常使用的Telnet連接到。 If the port 23 is not closed, mean Telnet service may be running.如果端口23是沒有關閉,意味著Telnet服務可能正在運行。 To check if port 23 is closed or opened, you need to have nmap installed on server.若要檢查端口23是封閉或開放,您需要有nmap安裝在服務器上。 The command to use is:該命令以使用是:
nmap -sT -O localhost nmap -聖- O的本地
IMPORTANT : This is a machine translated page which is provided "as is" without warranty. 重要說明 :這是一個機器翻譯網頁是“按原樣”提供的擔保。 Machine translation may be difficult to understand.機器翻譯可能很難理解。 Please refer to請參閱 original English article原來的英語文章 whenever possible.只要有可能。
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August 19th, 2007 22:19 2007年8月19日22時19分
[...] some web hosting providers has Telnet disabled by default. [ … … ]有些網站託管服務提供商的Telnet已默認情況下禁用。 Webmasters or system administrators can verify if the Telnet service is turned off.網站管理員或系統管理員可以驗證,如果Telnet服務是關閉的。 If it’s still running, the following guide will provide steps to disable and turn off Telnet [...]如果它還是在運行,以下指南將提供的步驟,禁用和關閉的Telnet [ … … ]