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27 Ocak 2012 Cuma

ARP (Address Resolution Protocol) Hakkında bakındıklarım

En temiz kaynak tabii ki:

ARP'ın Ön Belleğinin(cache) Görünümü


ARP içine olmayan bir IP adresinin olmayan bir MAC adresi ile kaydı

C:\Users\Administrator>arp -s 192.168.101.101 00-aa-bb-cc-dd-ee
C:\Users\Administrator>arp -a 192.168.101.101

Interface: 10.214.36.74 --- 0xd
  Internet Address      Physical Address      Type
  192.168.101.101       00-aa-bb-cc-dd-ee     static

Netsh kullanımı: technet.microsoft.com

C:\Users\Administrator>

ARP Ön Belleğinin(cache) Silinmesi

Silmeden önce bakalım:

Silme işlemi:

Sildikten sonra:


Bir dizi işlem

  • Ön belleği silelim.
    C:\Users\Administrator>netsh interface ip delete arpcache
    Ok.
    



  • Olmayan IP adresi ile olan bir MAC adresini eşleyerek girelim:
    C:\Users\Administrator>arp -s 192.168.101.101 00-14-a5-76-19-3f
    
    
  • ARP Tablomuzda son duruma bakalım:
    C:\Users\Administrator>arp -a
    
    Interface: 10.214.36.74 --- 0xd
      Internet Address      Physical Address      Type
      10.214.36.3           68-b5-99-9a-6e-c0     dynamic
      10.214.36.255         ff-ff-ff-ff-ff-ff     static
      192.168.101.101       00-14-a5-76-19-3f     static
      255.255.255.255       ff-ff-ff-ff-ff-ff     static
    
    Interface: 192.168.68.1 --- 0x10
      Internet Address      Physical Address      Type
      192.168.68.255        ff-ff-ff-ff-ff-ff     static
    
    Interface: 192.168.198.1 --- 0x11
      Internet Address      Physical Address      Type
      192.168.198.255       ff-ff-ff-ff-ff-ff     static
    
    
  • Bu adresi pingleyelim:
    C:\Users\Administrator>ping 192.168.101.101
    
    Pinging 192.168.101.101 with 32 bytes of data:
    Request timed out.
    Request timed out.
    Request timed out.
    Request timed out.
    
    Ping statistics for 192.168.101.101:
        Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
    
    
  • MAC adresinin gerçek adresini pingleyelim:
    C:\Users\Administrator>ping 10.214.36.246
    
    Pinging 10.214.36.246 with 32 bytes of data:
    Reply from 10.214.36.246: bytes=32 time=7ms TTL=128
    Reply from 10.214.36.246: bytes=32 time=2ms TTL=128
    Reply from 10.214.36.246: bytes=32 time=2ms TTL=128
    Reply from 10.214.36.246: bytes=32 time=2ms TTL=128
    
    Ping statistics for 10.214.36.246:
        Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
    Approximate round trip times in milli-seconds:
        Minimum = 2ms, Maximum = 7ms, Average = 3ms
    
    
  • ARP Tablomuzda son duruma bakalım:
    C:\Users\Administrator>arp -a
    
    Interface: 10.214.36.74 --- 0xd
      Internet Address      Physical Address      Type
      10.214.36.3           68-b5-99-9a-6e-c0     dynamic
      10.214.36.246         00-14-a5-76-19-3f     dynamic
      10.214.36.255         ff-ff-ff-ff-ff-ff     static
      192.168.101.101       00-14-a5-76-19-3f     static
      255.255.255.255       ff-ff-ff-ff-ff-ff     static
    
    Interface: 192.168.68.1 --- 0x10
      Internet Address      Physical Address      Type
      192.168.68.255        ff-ff-ff-ff-ff-ff     static
    
    Interface: 192.168.198.1 --- 0x11
      Internet Address      Physical Address      Type
      192.168.198.255       ff-ff-ff-ff-ff-ff     static
    
    C:\Users\Administrator>
Tüm görünümü:
C:\Users\Administrator>netsh interface ip delete arpcache
Ok.

C:\Users\Administrator>arp -s 192.168.101.101 00-14-a5-76-19-3f

C:\Users\Administrator>ping 192.168.101.101

Pinging 192.168.101.101 with 32 bytes of data:
Request timed out.
Request timed out.
Request timed out.
Request timed out.

Ping statistics for 192.168.101.101:
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),

C:\Users\Administrator>arp -a

Interface: 10.214.36.74 --- 0xd
  Internet Address      Physical Address      Type
  10.214.36.3           68-b5-99-9a-6e-c0     dynamic
  10.214.36.255         ff-ff-ff-ff-ff-ff     static
  192.168.101.101       00-14-a5-76-19-3f     static
  255.255.255.255       ff-ff-ff-ff-ff-ff     static

Interface: 192.168.68.1 --- 0x10
  Internet Address      Physical Address      Type
  192.168.68.255        ff-ff-ff-ff-ff-ff     static

Interface: 192.168.198.1 --- 0x11
  Internet Address      Physical Address      Type
  192.168.198.255       ff-ff-ff-ff-ff-ff     static

C:\Users\Administrator>ping 10.214.36.246

Pinging 10.214.36.246 with 32 bytes of data:
Reply from 10.214.36.246: bytes=32 time=7ms TTL=128
Reply from 10.214.36.246: bytes=32 time=2ms TTL=128
Reply from 10.214.36.246: bytes=32 time=2ms TTL=128
Reply from 10.214.36.246: bytes=32 time=2ms TTL=128

Ping statistics for 10.214.36.246:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 2ms, Maximum = 7ms, Average = 3ms

C:\Users\Administrator>arp -a

Interface: 10.214.36.74 --- 0xd
  Internet Address      Physical Address      Type
  10.214.36.3           68-b5-99-9a-6e-c0     dynamic
  10.214.36.246         00-14-a5-76-19-3f     dynamic
  10.214.36.255         ff-ff-ff-ff-ff-ff     static
  192.168.101.101       00-14-a5-76-19-3f     static
  255.255.255.255       ff-ff-ff-ff-ff-ff     static

Interface: 192.168.68.1 --- 0x10
  Internet Address      Physical Address      Type
  192.168.68.255        ff-ff-ff-ff-ff-ff     static

Interface: 192.168.198.1 --- 0x11
  Internet Address      Physical Address      Type
  192.168.198.255       ff-ff-ff-ff-ff-ff     static

C:\Users\Administrator>

Son olarak: ARP'ın kullanımı

C:\Users\Administrator>arp

Displays and modifies the IP-to-Physical address translation tables used by
address resolution protocol (ARP).

ARP -s inet_addr eth_addr [if_addr]
ARP -d inet_addr [if_addr]
ARP -a [inet_addr] [-N if_addr] [-v]

  -a            Displays current ARP entries by interrogating the current
                protocol data.  If inet_addr is specified, the IP and Physical
                addresses for only the specified computer are displayed.  If
                more than one network interface uses ARP, entries for each ARP
                table are displayed.
  -g            Same as -a.
  -v            Displays current ARP entries in verbose mode.  All invalid
                entries and entries on the loop-back interface will be shown.
  inet_addr     Specifies an internet address.
  -N if_addr    Displays the ARP entries for the network interface specified
                by if_addr.
  -d            Deletes the host specified by inet_addr. inet_addr may be
                wildcarded with * to delete all hosts.
  -s            Adds the host and associates the Internet address inet_addr
                with the Physical address eth_addr.  The Physical address is
                given as 6 hexadecimal bytes separated by hyphens. The entry
                is permanent.
  eth_addr      Specifies a physical address.
  if_addr       If present, this specifies the Internet address of the
                interface whose address translation table should be modified.
                If not present, the first applicable interface will be used.
Example:
  > arp -s 157.55.85.212   00-aa-00-62-c6-09  .... Adds a static entry.
  > arp -a                                    .... Displays the arp table.