[
Date Prev][
Date Next][
Thread Prev][
Thread Next][
Date Index][
Thread Index]
[
List Home]
|
RE: [dsdp-tm-dev] RLogin Shell Service
|
Ah, yes... now I remember :)
rlogin works from java only if the super-user (root) runs
the Java program.
For normal users, all you can do is launch the operating
system's rlogin executable.
That executable is built with setuid bit so it will run
with root privileges.
We've been doing this commercially, so I know it's doable
and I don't think there is any other way around it.
On Windows, I'm not quite sure ... the privileged ports
below 1024 may be accessible on Windows, you'd need to try it out or google the
web if there is a chance for this to work. Otherwise, you need an rlogin.exe on
Windows.
BTW, if you write your program to launch the external
rlogin exe and communicate through it, this has more advantages: your solution
becomes very flexible, since users can replace rlogin.exe by any other exe they
like. We've had existing requests to do this for ssh (i.e. use external ssh.exe)
because such external ssh programs support more configuration options than
internal Java ssh client. There should be a related bug in bugzilla (something
about ssh config, I'm sure you find it when running bugzilla
search).
Cheers,
--
Martin Oberhuber, Senior Member of Technical
Staff, Wind River
Target Management Project
Lead, DSDP PMC Member
Hi everybody,
I'm currently working on an RLogin shell
service, adapting the work done for telnet.
I'm facing a major problem :
for security reasons, when a user wants to access a remote system, the "source
port" for the rlogin command must be in the range 0-1023. As i'm accessing it
through Eclipse, this condition is not respected and the authentification
failed miserably ("java.net.BindException: All ports in use or insufficient
permssion").
Do I have to modify the Apache Commons Net sources to bypass
this restriction (dirty) or is there a another solution ?
Thank you for
your attention
Florian
