Connectivity
Connectivity and managing Your Comcast Business network
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quetek
Frequent Contributor

How to access computers with private IP from a computer with static IP.

I have a number of computers connected to a CG3000DCR.  Some with private IP (10.1.10.x from DCHP), and some with static IP (50.254.x.y).  What do I need to do so computers from one network can see those from the other.

My current firewall settings are:

 

Firewall options

  (not checked) Disable Firewall for True Static IP Subnet Only
  (not checked) Disable Gateway Smart Packet Detection
  (not checked) Disable Ping on WAN Interface
  (not checked) Disable IPv6 Firewall

 

Port Configuration

  True Static IP Port Management

    http (allowed)

    https (allowed)

    ...

 

Everything else use the defaults.

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2 REPLIES 2
Trusted Forum Contributor

Re: How to access computers with private IP from a computer with static IP.

Hello quetek and welcome,

 

Please see my comments/questions below. Thanks.

 

have a number of computers connected to a CG3000DCR.  Some with private IP (10.1.10.x from DCHP), and some with static IP (50.254.x.y).  What do I need to do so computers from one network can see those from the other.

 

Could you please share with the community which of the following you need to do:

 

1.  share application ports between same or different applications on staticIP and DHCP IP devices?

2. control (or trigger) applcations between staticIP and DHCP IP devices?

3. provide data between staticIP and DHCP IP devices?

 

There is a 1-1 NAT facility that you should check out by clicking Firewall, then 1-1 NAT Tab on top right, when you are in here just click on the left side help button and it will provide modal specific more detail info about this faciliity.

 

My current firewall settings are:

 

Firewall options

  (not checked) Disable Firewall for True Static IP Subnet Only (DFfTSIPSO)
  (not checked) Disable Gateway Smart Packet Detection

 

The above two settings should always be check to make sure there is not firewall up for any StaticIP device. The ONLY time you would not have DFfTSIPSO checked is to insure highest security to ONLY have specific application ports open on a StaticIP device.


  (not checked) Disable Ping on WAN Interface
  (not checked) Disable IPv6 Firewall

 

Port Configuration

  True Static IP Port Management (TSIPM)

    http (allowed)

    https (allowed)

    ...

 I am not aware of any TSIPM http or https allowed parameters. Could you please provide a snapshot as to where you are seegin these in the GUI?

 

Look for to hearing from you.

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quetek
Frequent Contributor

Re: How to access computers with private IP from a computer with static IP.

When we get service from comcast, we have two networks.

- One with the static IPs.

- One with the private IPs.

 

We are running a Microsoft network.  Basically, we need to do something like this

 

From a computer with a static IP (for example 50.254.101.100), connect to a share (MyShare) on a computer with a private IP (10.1.10.10):

net use x: \\10.1.10.10\FileShare1

 

The problem is "50.254.101.100" cannot see "10.1.10.10".

 

I try to setup "static rounting" but run into another problem.

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