2 IP addresses to one Cable Modem

[Burban]

I have a few questions;

1) Is it possible to have 2 IP addresses coming into a single Cable modem? I have a CGN2-ROG Hitron Tech unit.

2) If yes to question 1 then how can I configure the modem?

Issue: I have two people working remotely from the same home location and were told that they will not be able to sign into the office VPN at the same time. A) Is this a valid statement? B) If the statement is true therefore the questions about multiple IP addresses to a single modem.

 

[COLGeek]

Your cable modem will only have a single, external IP address. That being said, you should still be able to have more than one VPN connection at a time. What VPN application are you using?

 

[dextermat]

Hi,

The best thing to do is buy a router.
You won't get a headache that way

 

[COLGeek]

I assumed the OP has a router. If not, dextermat is spot on. You really must install a router to protect your network and handle these chores for you.

 

[Burban]

Hi,

The best thing to do is buy a router.
You won't get a headache that way

Thanks. The CGN2 provides:
Internet connection to cable modem service via CABLE port (F-type RF connector)
Local Area Network connection via four 10/100/1000 Mbps (megabits per second) Ethernet ports
Dynamic Host Configuration Protocol (DHCP) for devices on the LAN
LAN troubleshooting tools (Ping and Traceroute)
IEEE 802.11b/g/n wireless MIMO (Multiple-In, Multiple-Out) networking, allowing speeds of up to 300Mbps
Wireless security: WEP, WPA-PSK and WPA2-PSK encryption, Wifi Protected Setup (WPS) push-button and PIN configuration, MAC filtering.

With the above info can I assume that that router is within the Cable modem?

 

[COLGeek]

The cable model also serves as a router/firewall as well. That being said, you still only have a single external IP address. What is your up-stream and down-stream bandwidth levels and what VPN product are you using?

 

[Alabalcho]

In order to have more than one real IP addresses, you have to ask your cable company for that. Comcast here can provide a block of 8 (actually, five) external IP addresses. It is then up to your router to configure these addresses and route them to internal host / port.

 

[COLGeek]

With Comcast, doesn't that require "business class" service?

 

[ex_bubblehead]

Bear in mind that a good deal of the consumer level equipment only supports a single VPN channel, no matter how many IP addresses may be assigned.

 

[Burban]

The cable model also serves as a router/firewall as well. That being said, you still only have a single external IP address. What is your up-stream and down-stream bandwidth levels and what VPN product are you using?

Download speed average: 65 Mbps
Upload speed: 3 Mbps
VPN software: Avaya NetDirect.

 

[Burban]

Bear in mind that a good deal of the consumer level equipment only supports a single VPN channel, no matter how many IP addresses may be assigned.

Your statement is a little confusing since my wife & I work remotely (home office) for two different companies and we both sign into a VPN to reach our companies servers. Therefore I know you can have more than one VPN connection through consumer level equipment. The original question is can you have two VPN connections to the same company from the same remote office (i.e. behind the same IP address)? If not will a 2nd IP address to the cable modem fix this issue?

 

[Alabalcho]

@Burban, in your case VPN is done on client level - you run VPN client on your desktop / laptop. In that case, the router even does not care.

What OP is probably looking after is something running at router level - that is, a router with several (internal) IP networks, with some of them VPN-ed.

 

[wacabletech]

I have a few questions;

1) Is it possible to have 2 IP addresses coming into a single Cable modem? I have a CGN2-ROG Hitron Tech unit.

2) If yes to question 1 then how can I configure the modem?

Issue: I have two people working remotely from the same home location and were told that they will not be able to sign into the office VPN at the same time. A) Is this a valid statement? B) If the statement is true therefore the questions about multiple IP addresses to a single modem.

It depends on the ISP, I work for comcast and we used to offer multiple IP's over a modem we no longer do this.