From: Christian Zeng (christian@zengl.net)
Date: Sat Jun 28 2008 - 13:54:29 ART
Hi,
* ccie23 wrote:
> Thanks once again, was just wondering where i could get
> more info. From what i can get from google i only can tell that its
> some kind of serial proxy, so that the system treats the as a tcp
> port.
Ah, I see.
There isn't much to tell about to the program. Like you said, it relays
in- and output between the tcp stream and the serial port - its like
reverse telnet.
At the surface, it does the same what a (cisco) termserv does when you
reverse telnet to an async line, You can either bind the ser2net ports
to localhost only - this compares to gaining an exec on a terminal
server and then rtelnet locally - or bind it to the IP address of your
NIC, so you can access the serial ports over the LAN via telnet.
Because its all tcp/telnet, it is possible to combine this with a
dynamips emulated router that acts as a terminal server for all the
other dynamips routers already. Its all routing and forwarding within
the unix host.
You can take the Internetworkexpert topology .net file. The terminal
servers network interface gets bridged to a host interface (tapX/brX on
linux), so everything that is available on the host operating system is
accessible from that terminal server. From the students perspective, its
completely transparent - its the same experience as with rtelnet to any
dynamips instance (remember, you do telnet to access the console port of
a dynamips router). Your external devices integrate seamless into your
dynamips lab and especially the emulated terminal server.
There is a man page ("man 8 ser2net") that explains the few options
available to you - in addition, the ubuntu package comes with a small
config file (/etc/ser2net.conf) that already has some sample lines as
well as some more descriptive text.
> On a side note i see that ur doing yr security studies. I wish u
> all the best.
Thanks, I already passed the lab last year (#19533), now I slowly moving
forward to the R&S. ;)
Christian
This archive was generated by hypermail 2.1.4 : Tue Jul 01 2008 - 06:23:23 ART