How to block incoming IP address OR How to block SIP Scanners

[sjbifr]

I have a R6400 Wifi Router. I am trying to block an incoming IP address that is inundating my IP Phone with hundreds of calls a day. In every menu I have traversed so far, there is no where to enter the incoming IP address. If someone can please walk me through how to block the incoming IP, I would appreciate it. 

[michaelkenward]

The manual details anything that the R6400 can do:

>>> R6400 | Product | Support | NETGEAR <<<

[sjbifr]

Thank you for your response, unfortunately everything in the manual speaks to blocking "outgoing traffic" and does not address "incoming traffic". 

[michaelkenward]

The manual tells what you can achieve. I have seen no evidence that the router can block incoming traffic, beyond what the built-in rudimentary firewall can handle.

You may need a different tool to handle that.

Perhaps a little more research, and some information here about what this threat really is, would help.

Tell people what this is about:

an incoming IP address that is inundating my IP Phone with hundreds of calls a day

and you might get more informed answers.

Isn't this something that the iPhone should block?

[antinode]

> [...] my IP Phone [...]

> Isn't this something that the iPhone should block?

   "IP Phone" and "iPhone" are spelled differently for a reason.  Of
course, a more detailed description than "my IP Phone" might have
helped a little.

> [...] there is no where to enter the incoming IP address. [...]

   Not a feature I've seen on a Netgear consumer-grade router.

   I wouldn't bet a nickel on it, but you might be able to get some
effect by establishing a static route to nowhere for that offending IP
address: ADVANCED > Advanced Setup > Static Routes.

      Destination IP Address: w.x.y.z  (the offender)
      IP Subnet Mask: 255.255.255.255
      Gateway IP Address: 192.168.1.253  (or any unused address on your LAN subnet)
      Metric: 2  (Uncritical. The smallest accepted value should be fine.)

   The idea is not to block the incoming connection, but to misdirect
any replies (to a dead end).

   I don't know whether such a route would override the usual NAT
processing, but it should be a relatively simple experiment to run.  If
it does work, then I'd reserve that dead-end/unused address (for some
nonexistent MAC address, like, say, "01:01:01:01:01:01"), to ensure that
it's never issued to some real device.

[IrvSp]

IP Phone?

Clarify please, what exactly is that?

A phone that uses your Internet connection for voice? A phone that uses WiFi to make and receive calls? A phone that uses another device, like Vonage or Ooma?

Big differences and might have other ways to handle it?

I have VOIP phone, but it used an eMTA modem, and that is also the ISP's Internet modem. I don't get calls via my Router. I handle SPAM calls with another device, CallBlocker (check Amazon for info).

When my Cell connects to Wifi my Cell phone allows me to block any specific number.

So what is your 'phone', and how do you know the IP Address of 'what' is calling it?