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ÀÎÅÍ³Ý Á¢¼Ó (1, ±Û 3)
À¥ ¼­¹ö(web, httpd, apache) (48, ±Û 42, ÀÚ·á 31)
¸ÞÀÏ ¼­¹ö(mail) (31, ±Û 42, ÀÚ·á 23)
³×ÀÓ¼­¹ö(name server, dns, bind) (15, ±Û 18, ÀÚ·á 4)
FTP ¼­¹ö / rsync / ¹Ì·¯¸µ / CVSup (12, ±Û 13, ÀÚ·á 9)
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»ï¹Ù (samba) (4, ±Û 1, ÀÚ·á 5)
ÇÁ¶ô½Ã ¼­¹ö(ÇÁ·Ï½Ã, proxy server) (6, ±Û 3, ÀÚ·á 2)
³×Æ®¿öÅ© Åø (15, ±Û 1, ÀÚ·á 11)
Ŭ·¯½ºÅ͸µ(cluster) (6, ÀÚ·á 1)
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IRC (Internet Relay Chat) / ¸Þ½ÅÀú (6)
ssh / telnet (10, ±Û 3, ÀÚ·á 2)
NFS / SHFS (5, ÀÚ·á 2)
VPN ¼­¹ö, FreeS/WAN (4)
DHCP (1, ÀÚ·á 1)
LDAP (3, ÀÚ·á 1)
SAN / NAS / ½ºÅ丮Áö (4, ±Û 2, ÀÚ·á 6)
À½¾Ç¹æ¼Û / icecast (3, ±Û 1)

  ³×Æ®¿öÅ©³»ÀÇ ¸ðµç Àåºñ/PC ·£Ä«µå ÁÖ¼Ò ¾Ë¾Æ³»±â ÀÛ¼ºÀÏ : 2003/09/21 01:22
 
  • ±Û¾´ÀÌ : ÁÁÀºÁøÈ£ ( http://coffeenix.net/ )
  • Á¶È¸¼ö : 11750
          [ ÀÌÀüÈ­¸é / ¼öÁ¤ ]   ºñ¹Ð¹øÈ£ :     Àμâ¿ë È­¸é
      ÀÛ¼ºÀÚ : ÁÁÀºÁøÈ£(truefeel, http://coffeenix.net/ )
    ÀÛ¼ºÀÏ : 2003.2
    Á¤¸®ÀÏ : 2003.9.21(ÀÏ)

    ³»ºÎ ³×Æ®¿÷ÀÇ ¼­¹ö¿Í PC, ³×Æ®¿öÅ© ÀåºñÀÇ ¸ðµç ·£Ä«µå ¹°¸®ÁÖ¼Ò(MAC Address)¸¦ ¾Ë¾Æ³»´Â ¹æ¹ýÀº
    ¹¹°¡ ÀÖÀ»±î?

    °¡Àå ¾È ÁÁÀº ¹æ¹ýÀº °¢ PC ÄÉÀ̽º¸¦ ¿­¾î ·£Ä«µå¿¡ ½áÁø °ÍÀ» º¸°í È®ÀÎÇÏ´Â °Í.
    ÀÏ¹Ý PC´Â ±¦Âú°ÚÁö¸¸ ¾îµð ¼­¹ö³ª ³×Æ®¿öÅ© Àåºñ´Â ±×¸® ½±°Ô ÇÒ ¼ö ÀÖ³ª.

    1) arp¸¦ ÀÌ¿ëÇÏ´Â ¹æ¹ýÀÌ ÀÖÀ» °ÍÀÌ´Ù.

    ¹æÈ­º®À̳ª ³»ºÎ ¼­¹ö Áß¿¡ »ç³» Á÷¿øÀÌ °¡Àå ¸¹ÀÌ Á¢±ÙÇÏ´Â ¼­¹ö¿¡¼­ arp ¸í·ÉÀ» ³»¸®´Â °ÍÀÌ´Ù.
    ¾Æ´Ï¸é '¸ðµÎ ÀÌÂÊ ¼­¹ö¿¡ Á¢¼ÓÇϼ¼¿ä'¶ó°í °øÁö¸¦ ³»¸° ÈÄ È®ÀÎÇÏ¸é ¸ðµç PCÀÇ ·£Ä«µå ¹°¸®ÁÖ¼Ò´Â
    ¾Ë¾Æ³»´Â °ÍÀº ±Ý¹æÀÌ´Ù.


    -------------------------------------------------------------------------------
    # arp -a
    Net to Media Table
    Device   IP Address               Mask      Flags   Phys Addr
    ------ -------------------- --------------- ----- ---------------
    hme0   192.168.92.65        255.255.255.255       00:10:5a:xx:xx:xx
    hme0   e1.xxx.net           255.255.255.255       00:00:0c:xx:xx:xx
    hme0   ns.xxx.net           255.255.255.255       08:00:20:xx:xx:xx
    hme0   infor.xxx.net        255.255.255.255       08:00:20:xx:xx:xx
    hme0   192.168.92.51        255.255.255.255       00:00:0c:xx:xx:xx
    hme0   recycle              255.255.255.255 SP    08:00:20:xx:xx:xx
    ... »ý·« ...
    -------------------------------------------------------------------------------


    2) ¹æÈ­º®À̳ª ¶ó¿ìÅÍ¿¡¼­ snmp¸¦ ÀÌ¿ëÇÏ´Â ¹æ¹ý

    ¹æÈ­º®À̳ª ¶ó¿ìÅÍ¿¡¼­ snmp µ¥¸óÀÌ µ¿ÀÛÇÒ °æ¿ì¿¡ snmpwalk ¸í·ÉÀ¸·Î È®ÀÎÇغ¸ÀÚ.
    snmpwalk¸¦ »ç¿ëÇϱâ À§Çؼ­´Â NET-SNMP ÅøÀÌ ¼³Ä¡µÇ¾î ÀÖ¾î¾ß ÇÑ´Ù.
    NET-SNMP ȨÆäÀÌÁö´Â http://www.net-snmp.org/ ÀÌ´Ù.

    snmpwalk -c < community¸í > < ¹æÈ­º® / ¶ó¿ìÅÍ IP >  at.atTable.atEntry.atPhysAddress


    -------------------------------------------------------------------------------
    # snmpwalk -c ?????? 192.168.92.1 at.atTable.atEntry.atPhysAddress
    at.atTable.atEntry.atPhysAddress.1.1.192.168.92.1 =  Hex: 00 00 0C xx xx xx
    at.atTable.atEntry.atPhysAddress.1.1.192.168.92.2 =  Hex: 08 00 4E xx xx xx
    ... Áß·« ...
    at.atTable.atEntry.atPhysAddress.1.1.192.168.92.9 =  Hex: 00 00 00 00 00 00
    at.atTable.atEntry.atPhysAddress.1.1.192.168.92.10 =  Hex: 08 00 20 xx xx xx
    at.atTable.atEntry.atPhysAddress.1.1.192.168.92.11 =  Hex: 08 00 20 xx xx xx
    at.atTable.atEntry.atPhysAddress.1.1.192.168.92.12 =  Hex: 08 00 20 xx xx xx
    at.atTable.atEntry.atPhysAddress.1.1.192.168.92.13 =  Hex: 08 00 20 xx xx xx
    at.atTable.atEntry.atPhysAddress.1.1.192.168.92.14 =  Hex: 00 00 00 00 00 00
    at.atTable.atEntry.atPhysAddress.1.1.192.168.92.15 =  Hex: 00 00 00 00 00 00
    at.atTable.atEntry.atPhysAddress.1.1.192.168.92.16 =  Hex: 00 40 33 xx xx xx
    at.atTable.atEntry.atPhysAddress.1.1.192.168.92.17 =  Hex: 00 00 00 00 00 00
    ... »ý·« ...
    -------------------------------------------------------------------------------

    ¸¸¾à ´Ù¸¥ IPÀε¥ °°Àº ¹°¸®ÁÖ¼Ò°¡ ³ª¿Â´Ù¸é ¾î´À Çϳª´Â IP aliasµÈ °ÍÀÌ´Ù.

    ÀÌÁ¦ at.atTable.atEntry.atPhysAddress¿¡ ´ëÇؼ­ ¼³¸íÇغ¼±î.

    SNMP ÇÁ·ÎÅäÄÝÀÇ MIB-II ±×·ìÀº °èÃþ±¸Á¶·Î µÇ¾î ÀÖÀ¸¸ç »óÀ§ 10°³ÀÇ ±×·ìÀÌ ÀÖ´Ù.
    system, interfaces, at, ip, .. µî
    ±×Áß¿¡ at ±×·ì IP ÁÖ¼Ò¿¡ ´ëÇÑ Á¤º¸¸¦ °®°í ÀÖ´Â ±×·ìÀÌ´Ù.

    system(1)
    interfaces(2)
    at(3)
      +--- atTable(1)
         +---- atEntery(1)
            +---- atIfIndex(1)
            +---- atPhysaddress(2)
            +---- atNetAddress(3)
    ip(4)
    ...
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