I am not able to pin point what is missing. I have configured freenx-server (useradd, passwd etc). However, server drops the connection after authentication. Please note my server is ubuntu 10.04 and client recent version.

Below is the error log

NX> 203 NXSSH running with pid: 6016 NX> 285 Enabling check on switch command NX> 285 Enabling skip of SSH config files NX> 285 Setting the preferred NX options NX> 200 Connected to address: 192.168.2.2 on port: 22 NX> 202 Authenticating user: nx NX> 208 Using auth method: publickey HELLO NXSERVER - Version 3.2.0-74-SVN OS (GPL, using backend: 3.5.0) NX> 105 hello NXCLIENT - Version 3.2.0 NX> 134 Accepted protocol: 3.2.0 NX> 105 SET SHELL_MODE SHELL NX> 105 SET AUTH_MODE PASSWORD NX> 105 login NX> 101 User: sandeep NX> 102 Password:  NX> 103 Welcome to: ubuntu user: sandeep NX> 105 listsession --user="sandeep" --status="suspended,running"
--geometry="1366x768x24+render" --type="unix-gnome" NX> 127 Sessions list of user 'sandeep' for reconnect:

Display Type             Session ID                       Options  Depth Screen         Status      Session Name
------- ---------------- -------------------------------- -------- ----- -------------- ----------- ------------------------------


NX> 148 Server capacity: not reached for user: sandeep NX> 105 startsession  --link="lan" --backingstore="1" --encryption="1"
--cache="16M" --images="64M" --shmem="1" --shpix="1" --strict="0" --composite="1" --media="0" --session="t" --type="unix-gnome" --geometry="1366x768" --client="linux" --keyboard="pc105/us" --screeninfo="1366x768x24+render" 

ssh_exchange_identification: Connection closed by remote host NX> 280 Exiting on signal: 15