Re: [ts-7000] telnet from a different network blocked ?

[Dave Cramer <>]

There is a route for this, as I said, telnet is the only protocol which is not returning a connection.

I can get connections to other ports. which is why I asked if telnetd specifically blocked.

In fact I just enabled ssh and it works fine, but telnet doesn't ????

So to answer other questions. The board is not using inetd for telnet, it is using busybox's built in telnet

Dave

On 18-Apr-07, at 7:38 AM, David wrote:

telnetd does not block the network however you must have a gateway set so
it can find the return path. 
in simple terms-  the TS will receive a request from a remote IP if it does not find the IP
on its local network it will sent it to the gateway.  The gateway normally is a router that will forward it
back to the remote host.  If you type "route" you should see something like this:
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.1.0     *               255.255.255.0        U       0        0        0     eth0
default         192.168.1.254     0.0.0.0            UG      0        0        0    eth0

which says if the request is from 192.168.1.XXX return it locally else send it to
192.168.1.254 which is my router to the world.

you can find the gateway and dns from any machine on the same network with
ipconfig for windows and /sbin/ifconfig for linux.  route works on both.
 Program that info in the TS board and you should be good to go.

Hope that helps.
David
 


Dave Cramer wrote:

Let me explain.

from computes on the same class C I can connect, from computers on a different class C I can't connect.

telnetd is listening on port 23

what I want to know is does telnetd block connections from a different network ?

Dave

On 17-Apr-07, at 7:06 PM, Alvaro Aguirre wrote:

Ok, do you have any aplication *listening* on the 23 port?
If not, you can use the tcputils utilities (tcplisten in this case)

On 17 Apr 2007 13:40:57 -0700, Dave Cramer <m("visible-assets.com","davec");">assets.com> wrote:

Yes, there is a gateway, however only certain ports are blocked.

Dave

On 17-Apr-07, at 4:13 PM, Alvaro Aguirre wrote:

Do you have a gateway betwen the two networks?

On 17 Apr 2007 12:35:48 -0700, Dave Cramer < m("visible-assets.com","davec");" target="_blank"> assets.com> wrote:

Is there some code in the telnetd which blocks connections from a
different network ?

I am using openvpn

I want all my "real" computers to be on 172.16.73.0/24, and all my
7250's to be on 172.16.72.0/ 24

wierdly enough I can't connect to port 23 from the real computers to
the 7250 ??

But I can connect to other ports, so the network is fine.

Anyone ?

Dave

--
David.......... You have been on the computer to long when, You start tilting your head sideways to smile :-)

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