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Ports responding on WAN side


biob
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So recently my home router keeps being port scanned from IP’s in China. Today I shields up to check my router and found ports 135,139 and 445 were responding that the ports exist. Can someone more than myself please advise?

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if you have ports open, especially ports 1-1000 then it will attract a lot of attention from bots and other port scans. Close them.

Port info

138

https://www.speedguide.net/port.php?port=138

139

https://www.speedguide.net/port.php?port=139

445

https://www.speedguide.net/port.php?port=445

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Hi Just_a_user,

I have upnp turned off on my router, so I’m unsure how they got opened. I knew anything to do with SMB is bad on my WAN side :-)

 I have a Netgear router and have very little control over open ports:-( have been playing with the idea of installing ddwrt. What are your thoughts on this?

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2 hours ago, biob said:

I have a Netgear router and have very little control over open ports:-( have been playing with the idea of installing ddwrt. What are your thoughts on this?

dd-wrt version 3.0 is currently in beta but maybe your router isn't available https://www.dd-wrt.com/site/support/other-downloads?path=betas%2F2017%2F11-16-2017-r33772%2F  Its also worth checking Tomato and gargoyle to see if they have firmware's for your device  http://www.polarcloud.com/tomato   & https://www.gargoyle-router.com/  or even   https://wiki.openwrt.org/toh/start?dataflt[Brand*~]=netgear  or  https://lede-project.org/

 

Edited by Just_a_User
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Thank you for advice.

Issue has now been resolved. Turns out my ISP is actively blocking these ports, hence open|filtered result. It totally threw me out when I changed my router and I was getting the same results. Spent all day on it before I found the answer.:grin:

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