Telnet°¡ ¼­¹ö¿¡ ´Þ¸®´ÂÁö °Ë»çÇÏ´Â ¹æ¹ý

Telnet (¿ø°Å¸® Åë½Å¸Á)´Â ¸Ö°Ô Ŭ¶óÀÌ¾ðÆ®¿¡°Ô¼­ ¼­¹ö¿¡ Á¢±ÙÇϱâ À§ÇÏ¿© ´ëÁßÀÇ ÀÎÅÍ³Ý ¶Ç´Â ±Ù°Å¸® ³×Æ®¿÷ (±Ù°Å¸® Åë½Å¸Á) ¿¬°á¿¡ ÀÌ¿ëµÈ ¾ÈÀüÇÏÁö ¾Ê´Â ³×Æ®¿öÅ© ÇÁ·ÎÅäÄÝ ÀÌ´Ù. Telnet¿¡ ´ëÇÑ ¹®Á¦´Â, Áß´ëÇÏ°Ô Áõ°¡ÇÑ´Ù ¾Èº¸ À§ÇùÀ» ȸÀǰ¡ »ç¿ëÀÚ ¸í¿¡ ºñ¾Ïȣȭ ÀÌ°í ¾ÏÈ£°¡ Æò¹®¿¡ ÀÖ´Â ³×Æ®¿öÅ©ÀÇ ¸ÂÀºÆí¿¡ Àü´ÞÇѤ¤´Ù´Â °ÍÀ» ÀÌ´Ù.

Telnet ¼­ºñ½º°¡ ¼¼°èÀûÀÎ °ø°Ý¿¡ µå·¯³»´Â À¥ ¼­¹ö ¶Ç´Â À¥ ÁÖÀο¡ ´ç½ÅÀÇ ¼­¹ö¿¡, ƯÈ÷ ´Þ¸®´ÂÁö ´ç½ÅÀÌ È®ÀÎÇÏ°í °Ë»çÇÏ°í ½ÍÀº °æ¿ì¿¡, Telnet °úÁ¤¿¡ °ËÁõÀ» ½ÇÇàÇÏ´Â ½¬¿î ¹æ¹ýÀº ¿©±â¿¡¼­ ÀÖ´Ù.

¶Ç´Â ¼­¹ö¿¡ ¾Æ´Õ´Ï´Ù Telnet °úÁ¤ÀÌ ´Þ¸®¸é °Ë»çÇÏ´Â ½¬¿î ¹æ¹ýÀº ÇöÀç ´Þ¸®¸¦ °¡°øÇϴ ǥ½ÃÇÏ´Â ps ¸í·ÉÀ» »ç¿ëÇØ¼­ ÀÎÁö. SSH¸¦ ÅëÇØ ¼­¹ö¿¡ ¾î¶² ´Þ¸®±â Telnet °úÁ¤µçÁö¸¦, ·Î±×ÀÎÀº °Ë»çÇϱâ À§ÇÏ¿©´Â (¶Ç´Â ´ç½ÅÀÌ ¼­¹ö·Î Telnet ÇÒ ¼ö ÀÖ´Â °æ¿ì¿¡ À°Ã¼ÀûÀ¸·Î ÀåÄ¡¸¦ »ç¿ëÇÏ¿©, ¸í¹éÇÏ°Ô Telnet ¼­ºñ½º´Â ´Þ¸®°í ÀÖ´Ù), µÚ¿¡ ¿À´Â ¸í·ÉÀ» ´Þ¸°´Ù:

º¸Á¶ ps - | grep telnet

°á°ú°¡ "grep telnet" À̿ܿ¡ ¾Æ¹« ´Ù¸¥ °úÁ¤³ª µ¹·Áº¸³»´Â °æ¿ì¿¡ ¼±Àº ¾î¶² Telnet °úÁ¤ÀÌ ´Þ¸®°Å³ª ȸÀǰ¡ ¿­¸°¤¤´Ù´Â °ÍÀ» ÀǹÌÇÑ´Ù.

¾çÀÚÅÃÀÏ·Î, Telnet°¡ ÀϹÝÀûÀ¸·Î ¿¬°áÇÏ´Â °ÍÀ» »ç¿ëÇÏ´Â ÀÚÀ¯Ç× 23¸¦ À§ÇÑ ´ç½ÅÀÇ ¼­¹ö¸¦ °Ë»çÇϽʽÿÀ. Ç×±¸ 23°¡ ´ÝÈ÷Áö ¾Ê´Â °æ¿ì¿¡, ºñ¿­ÇÑ Telnet ¼­ºñ½º´Â ´Þ¸±Áöµµ ¸ð¸¥´Ù. Ç×±¸ 23°¡ ´ÝÈ÷°í´Â ¶Ç´Â ¿©´Â ÀÎÁö °Ë»çÇϱâ À§ÇÏ¿©´Â, ´ç½ÅÀº ¼­¹ö¿¡ ¼³Ä¡µÈ nmap°¡ ÀÖÀ» Çʿ䰡 ÀÖ´Ù. »ç¿ëÇÏ´Â ¸í·ÉÀº:

nmap - sT - O localhost

Áß¿äÇÑ: À̰ÍÀº º¸Àå ¾øÀÌ "ÀÖ´Â ±×´ë·Î" Á¦°øµÇ´Â ±â°è ¹ø¿ª ÆäÀÌÁöÀÌ´Ù. ±â°è¹ø¿ªÀº ÀÌÇØÇϱ⠰ï¶õÇÒÁöµµ ¸ð¸¥´Ù. Âü°íÇϽʽÿÀ ¿ø·¡ ¿µ±¹ ±â»ç °¡´ÉÇÑ ¾ðÁ¦µçÁö.

°øÀ¯ÇÏ°í °øÇåÇϰųª ±â¼úÁö¿øÀ» ¾ò°í¿¡ µµ¿ì½Ê½Ã¿À ³ªÀÇ µðÁöÅÐ »ýȰ °ø°³Åä·Ð.



One Response to ¡°How to Check if Telnet Is Running on a Server¡±

  1. Disable and Turn Off Telnet in Linux » My Digital Life
    August 19th, 2007 22:19
    1

    [...] some web hosting providers has Telnet disabled by default. Webmasters or system administrators can verify if the Telnet service is turned off. If it¡¯s still running, the following guide will provide steps to disable and turn off Telnet [...]

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