Disabling RC4 in Windows 2008 SP2 server


hi,

i looking security patch win 2008 sp2 server, didn't find in microsoft download kb center.

is there other way disable rc4 in win 2008 sp2 server?

let me know.

thanks in advance.

regards,

atanu

hi atanu biswas,

it seems can't find kb disable rc4 on 2008 sp2 directly, may change registry keys manually check if work.

to disable rc4, may modify following registry these values:

  • [hkey_local_machine\system\currentcontrolset\control\securityproviders\schannel\ciphers\rc4 128/128]
    "enabled"=dword:00000000
  • [hkey_local_machine\system\currentcontrolset\control\securityproviders\schannel\ciphers\rc4 40/128]
    "enabled"=dword:00000000
  • [hkey_local_machine\system\currentcontrolset\control\securityproviders\schannel\ciphers\rc4 56/128]
    "enabled"=dword:00000000

if can't see registry key, may add them manually.

for precautious, may backup registry key before modify them.

best regards,

anne


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