Is this a known attack type?

I have since yesterday afternoon been getting strange scan.
One IP is trying to connect to my port 712. As you can see in the picture it is trying every port on the remote machine.
I guess the remote machine is infected with something. Anyone know what malware tries to connect to port 712? And tries every port on the infected machine?

While I am at it I´d like to know if anyone knows what the port 520 (router) scan is. I have had these entries from the same IP for a couple of months now.
Both IP´s in the pic are from the same network (same ISP, fiber connection) as I am. My IP starts with 85.226.113.xxx too. The "attack" continues even if I change IP adress on my machine.

And yes I am aware that I have nothing to worry about since my firewall (Tiny firewall) blocks the connection, I am just curious coz I have never seen such persistent connection attempts before or usually they dissapear when I change IP adress.

 

Hi, sukarof

Port 520 relates to RIP

(RIP) Route Info Protocol.

Used between routing hosts to advertise route table. Security Concerns: Vul to malicious route updates, which provides several attack possibilities: -- DOS network w/ bad updates. -- Route traffic to you for exploit. -- Route your attack pkts around network defenses.

More info here and here

Also you can find a list of ports Here

 

Thanks for for the links