Port Blocking


How to Block Ports in Windows Server 2008 through IPSec?
 
1) Click 'Start' > 'Run' >type 'MMC' press ok.
- In the console click > 'File' > 'Add/Remove Snap in'
- In the 'Standalone Tab' click The 'add' button
- Seclect 'IP Security Policy Managment' > 'ADD' > 'Local Computer' > 'finish' > 'close' > 'ok'
- You should now be back to the console.
- In the left frame right click 'IP security policies on local computer' > 'Create IP security policy'
- Click Next and then name your policy 'Block IP' and type a description.
- Click 'Next' then leave 'activate' ticked then click 'Next'
- leave the 'edit properties ticked and click 'Finish'
- You should now have the properties window open.
- Click 'ADD' then click 'Next' to continue.
- Leave 'This rule does not specify a tunnel' selected and click 'next'
- Leave 'all network connections' selected and click 'next'
 
2) You should now be on the IP filter list. You need to create a new filter, so dont select any of the default ones. Click 'ADD'
 
- Type a Name for your list, call it 'IP block list'.
- Type a description in, can be same as name.
- Click 'ADD' then click 'Next' to continue.
- In the description box type a description. As its the first IP you are blocking call it 'IP1' or 'IP Range 1'.
- Leave ticked the 'Mirrored. Match packets with the exact opposite source and destination addresses'.
- Click 'Next'.
- The 'Source address' should be left as 'My IP address' click 'Next'.
- You can now select 'A Specific IP address' or 'A Specific Subnet' for the Destination address.
- Type in the IP address you want to block and if blocking a subnet type in the subnet block. Click 'next'.
- Leave the protocol type as 'Any' and click 'Next' and then 'Finish'.
 
You have now blocked your first IP or IP range.
 
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