Hello, I have D-link router model DIR-300 with the latest firmware. Almost everyday, when I check log of my router I can see: Xmas port scan attack from WAN (ip:172.30.47.106) detected. I use all protection I can - only computers with selected MAC address can access my network, firewall rules are set up, WAN ping is disabled, remote managment is disabled, etc. Although my firewall protects me well, that Xmas attack slows down my router. I can create some firewall rules and deny specific ip address but I do not know how to use them. Image I would like to ask whether I can do something to prevent my router from being attacked all the time. Thank you

Ignore it; it's harmless.

Yep it is, but it often slow down my router cpu and I have big delay.

Well, there's not much you can do about it. Such background static pollutes the Internet, and happens regardless of what you do. If it's crippling your router, I'd suggest buying a better router. Also, sometimes routers just overheat. Have you tried having a fan blow on said router?

All right, I will put the router on a better place. Hope that it will solve my problem :-) By the way, I never thought that router can actually overheat while working in normal conditions.

Any electronic equipment can overheat while working in normal conditions, if it isn't properly cooled.

Have you ever configured your router settings to boost the signal? If so, that can cause the unit to run hotter. If you have, you might want to cut it back. If not, then it must be something else. 1 Corinthians 15:3-4