We have netkit-telnet-0.17 and it works fine but we use it, through a tuntap
interface.
The package comes from
ftp://ftp.uk.linux.org/pub/linux/Networking/netkit
David
On Wed, Aug 20, 2008 at 1:56 AM, Gordon Russell <[EMAIL PROTECTED]>wrote:
> I am wondering if anyone could offer me some advice on telnet access
> to the UML console.
> I run linuxzoo.net, which has very poor console access for users right
> now (it relies on network logins direct to the guests).
> Im trying to fix that...
>
> I am using something like "con1=port:5800". I have in.telnetd from a
> fedora install. I have port-helper.
>
> My problem is that the console connection seems unreliable in two ways.
>
> Firstly:
> If I connect and login, then press CTRL-D before terminating telnet,
> it works fine when I telnet in again.
> If I connect and login, but terminate telnet before CTRL-D, then when
> I telnet in again I get the login prompt but the keymapping seems
> broken. Key codes are either corrupt or the characters invisible. I
> cannot find any way to recover from this except a reboot of the guest.
> It is almost like the guest OS fails to reset the console line, or it
> is stuck in raw mode, or there is a process left from the last session
> messing the connection up...
>
> Secondly:
> I have an intermittent rare problem where sometimes I cannot connect
> after disconnecting. I get console messages "no one waiting for port".
> I may also be left with one in.telnetd zombie. The result is that
> sometimes I can never get in again. It is like the port helper thread
> has became 1 connection out of sync.
>
> I am using a guest based on 2.6.18. I was using 2.6.8 previously, and
> this has the same problem. I dont see anything in the uml changelog
> which would suggest a more modern kernel is a solution to this, but I
> could be wrong.
>
> All advice appreciated. Happy to try anything. I have been
> investigating this for a few months and I cannot come up with a good
> solution. I could drop back to fd consoles and writing my own telnetd
> server to access the file descriptors, but I would prefer not to
> reinvent the wheel. I know I could use "screen" but for security
> reasons I would prefer not to allow users to log into the host
> machines.
> Perhaps a different in.telnetd source would help? (any pointers to a
> good version)?
>
> Anyone tried in.telnetd using screen rather than login?
> Would more consoles associated with port:5800 help?
>
> Thanks
> Gordon.
>
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