Cable Forum - IPSEC VPN and 120 modem

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Comp2003

29-09-2005 13:25

IPSEC VPN and 120 modem

Hi all

I will shortly need to connect to work from home. I have a 120 cable modem and have been advised to check if this supports IPSEC VPN. Could anyone let me know if this is the case or do I need a later model of modem.

If the 120 is all right will it also support a router for a wireless connection to a laptop.

Thanks in advance for all help.

Comp

Ignition

29-09-2005 13:47

Re: IPSEC VPN and 120 modem

Quote:

Originally Posted by Comp2003

Yes and yes, the modem is a bridge not a router so shouldn't care what the traffic going over it is so long as it's IP.

icanadvise

29-09-2005 17:36

Re: IPSEC VPN and 120 modem

Quote:

Originally Posted by Ignition

Yes and yes, the modem is a bridge not a router so shouldn't care what the traffic going over it is so long as it's IP.

How does NTL do the port blocking?
Is it modem config file based?

rdhw	29-09-2005 17:59

Re: IPSEC VPN and 120 modem

Quote:

Originally Posted by icanadvise

How does NTL do the port blocking?
Is it modem config file based?

Cable modems are designed to be able to do filtering on the basis of TCP/UDP port numbers and also on some aspects of the underlying MAC layer addressing. The cable modems are configured to do this at boot-time by the configuration file they fetch from the ISP.

However, IPSec is not one of the blocked protocols.

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