Hi John,
Typically, you'd do this:
1) Assign a separate IP address to each network interface. For example,
you might give 192.168.0.1 to one of them, and 192.168.0.2 to another.
2) In your DNS server, set up a name like 'telnet.example.com' (or
ftp.example.com for FTP, or www.example.com for Web.) Or if you have
more than one server, you might have telnetProd.example.com,
telnetTest.example.com or whatever makes sense. Anyway... have this
DNS entry point to the proper IP address... such as 192.168.0.1
3) Configure all of your telnet clients (Client Access, Mochasoft,
whatever) to connect to 'telnet.example.com'. Presto... all telnet is
now going to the 192.168.0.1 network interface!
4) If you ever want to change it, just change 'telnet.example.com' to
point to 192.168.0.2 instead.
If you don't want to do the above, and you're asking "I must always use
IP address 192.168.0.1, but I want incoming telnet to use a different
interface with the same IP address", then no, I don't think it's
possible. The system won't know if the connection is telnet or not
until it has received at least a packet or two off the network... and
the packet has to be received via one or the other network interface...
I suppose you could do it by putting a NAT gateway or load balancer in
front of the machine. Some different appliance that changes the packet
to go to the right IP address based on it's port number. So I guess
that's an alternative, if the users aren't connecting from within the
same subnet.
On 4/8/2011 9:57 AM, John Allen wrote:
I have two NIC cards.
I need to direct a telnet session to use a specific card (it needs to go out
from a specific IP address)
Is this possible and if so what do I need to do?
Thanks in advance
John
midrange.com
