i added some port to block i dont know if i did right or not i attached screenhot , and those port i found in my modem log was from dos attack i thought i can block them or what i should do to stop this attacks
> [...] those port i found in my modem log was from dos attack [...]
What, exactly, was in your log? Copy+paste is your friend.
> [...] i thought i can block them or what i should do to stop this > attacks
"ADVANCED > Security > Block Services" stops users on your LAN from accessing services on the Internet. It does nothing about external access to devices on your LAN.
Without seeing the messages from your log, it's hard to be sure, but I'd guess that your router is already blocking the "attack" (if it's not just a false alarm).
Other than the annoying messages in the log, are you seeing any actual problems?
> How do I know if they already in my modem and that make my internet > slow
As suggested before, these log entries do not mean that anyone is getting into your modem. Even if these were real attacks, and not just false alarms, you're seeing less than one per hour. I doubt that they're causing your problem, whatever it is.
Start again. Describe your actual problem. Then both you and your readers can worry about what might be causing it.
Visit http://netgear.com/support , put in your model number, and look for Documentation. Get the User Manual (at least). Read. Look for "Troubleshoot"?
