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Windows & DOS: Issues & Discussions
UDP/ tunnel
Post 302355083 by upengan78 on Monday 21st of September 2009 11:39:35 AM
09-21-2009
UDP/ tunnel
Hi,
I know tcp port tunneling can be done using ssh/putty. how about udp?
I have a scenario where a license server handsout licenses to machines in that network ONLY. I have a windows machine in a different subnet and even though the client software can see license server, while using the software the lic. server denies the permission because the windows machine is not in the same subnet as that of license server.
The license server here is windows. The service runs on port_a ( I think this should be 2047 UDP for opnet)
There are solaris / linux machines in the same network as that of license server which can be used for tcp/udp tunneling but I don;t know how I should make use of that. I do have account on those unix/linux machines and tcp forwarding/gateway ports is enabled in sshservers.
Is there anyway from client(windows), I can specify " localhost : port_a "as license server and so software will query to localhost:2047(udp). Can we forwards 2047 UDP to localhost:2047(tcp)?
Then do ssh tcp forwarding to linux machine for tcp port 2047. Then on remote linux machine forward tcp 2047 to localhost:2047(udp) and forward that udp 2047 to license server 2047 (udp)?
Is this technically possible? May be using nc(netcat) or udp_redirect?
or if there is any other way to let such users use the lic. servers successfully?
Please help..
Thanks in advance!
I know tcp port tunneling can be done using ssh/putty. how about udp?
I have a scenario where a license server handsout licenses to machines in that network ONLY. I have a windows machine in a different subnet and even though the client software can see license server, while using the software the lic. server denies the permission because the windows machine is not in the same subnet as that of license server.
The license server here is windows. The service runs on port_a ( I think this should be 2047 UDP for opnet)
There are solaris / linux machines in the same network as that of license server which can be used for tcp/udp tunneling but I don;t know how I should make use of that. I do have account on those unix/linux machines and tcp forwarding/gateway ports is enabled in sshservers.
Is there anyway from client(windows), I can specify " localhost : port_a "as license server and so software will query to localhost:2047(udp). Can we forwards 2047 UDP to localhost:2047(tcp)?
Then do ssh tcp forwarding to linux machine for tcp port 2047. Then on remote linux machine forward tcp 2047 to localhost:2047(udp) and forward that udp 2047 to license server 2047 (udp)?
Is this technically possible? May be using nc(netcat) or udp_redirect?
or if there is any other way to let such users use the lic. servers successfully?
Please help..
Thanks in advance!
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LEARN ABOUT MOJAVE
net::time
Net::Time(3pm) Perl Programmers Reference Guide Net::Time(3pm) NAME
Net::Time - time and daytime network client interface SYNOPSIS
use Net::Time qw(inet_time inet_daytime); print inet_time(); # use default host from Net::Config print inet_time('localhost'); print inet_time('localhost', 'tcp'); print inet_daytime(); # use default host from Net::Config print inet_daytime('localhost'); print inet_daytime('localhost', 'tcp'); DESCRIPTION
"Net::Time" provides subroutines that obtain the time on a remote machine. inet_time ( [HOST [, PROTOCOL [, TIMEOUT]]]) Obtain the time on "HOST", or some default host if "HOST" is not given or not defined, using the protocol as defined in RFC868. The optional argument "PROTOCOL" should define the protocol to use, either "tcp" or "udp". The result will be a time value in the same units as returned by time() or undef upon failure. inet_daytime ( [HOST [, PROTOCOL [, TIMEOUT]]]) Obtain the time on "HOST", or some default host if "HOST" is not given or not defined, using the protocol as defined in RFC867. The optional argument "PROTOCOL" should define the protocol to use, either "tcp" or "udp". The result will be an ASCII string or undef upon failure. AUTHOR
Graham Barr <gbarr@pobox.com> COPYRIGHT
Copyright (c) 1995-2004 Graham Barr. All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.18.2 2013-11-04 Net::Time(3pm)