Working in networked environment

Presentation from IT CAMP-09 Network Architecture

Presentation from IT CAMP-09 Login to your machine The desktop machine types – Linux/Solaris/Windows Unix Logins – single login across the network in NIS environment – Distributed file systems – ie all machines act as NFS server and client – home directory /u/ when you login from any machine

Presentation from IT CAMP-09 Common software area Unix Common area – all software's are installed at /software/ / / – Releases are kept at /software/RELEASE – Documents are located at /software/Documents – /software/BACKUP How to know Unix machine type – uname –a – cat /etc/issue for Linux

Presentation from IT CAMP-09 Why login to other machines ? Faster machines for regressions Porting machines with required environments Running mozilla and other software Always make sure that you are authorized to login to that machine. Check back with systems or your manager

Presentation from IT CAMP-09 Remote Login & File Transfer Client rsh & rcp telnet & ftp ssh & scp Server rshd telnetd & ftpd sshd Commands rshd, telnetd, ftpd, sshd are server program and provide similar services, remote login & file transfer. The major difference is security level. rshd < telnetd + ftpd < sshd

Presentation from IT CAMP-09 Remote Login & File Transfer Remote login & file transfer system are based on server and client model. client program on your machine ask sever program certain service remote machine. For example, telnet server provides remote login service. ftp server provides file transfer service. Sample client programs; WS FTPFTP client Internet ExplororHTTP client EudoraPOP, SMTP client

Presentation from IT CAMP-09 Executing commands remotely : rsh rsh command lets user execute a single command on a remote machine without having to login formally To execute a command on a remote computer rsh User can open a single shell to connect to remote computer also with rsh rsh RSH

Presentation from IT CAMP-09 It allows a user to login to any reachable system on which the user has an account, both Unix and non-Unix systems. telnet tulip Trying Connected to tulip. Escape character is '^]'. SunOS 5.7 login: biswadip Password: Last login: Thu Jul 7 15:38:11 from uranus Sun Microsystems Inc. SunOS 5.7 Generic October 1998 SunOS 5.7 TELNET

Presentation from IT CAMP-09 ftp allows users to copy files between the local system and any reachable system Usage – To transfer files ftp / – enter login & password – commands bin, get, put, mget, mput, prompt, bye, lcd, hash, close FTP

Presentation from IT CAMP-09 ONE FTP SESSION ftp ftp.cal.interrasystems.com Connected to ftp.cal.interrasystems.com. 220 FTP server ready. Name (ftp.cal.interrasystems.com:biswadip): biswadip 331 Password required for biswadip. Password: 230 User biswadip logged in. ftp> lcd /u/biswadip/Xtra Local directory now /net/luann/luann1/users/Xtra ftp> hash Hash mark printing on (8192 bytes/hash mark). ftp> bin 200 Type set to I. mget * mget Training.doc? y 200 PORT command successful. 150 Opening BINARY mode data connection for Training.doc (79872 bytes). ##### 226 Transfer complete. local: Training.doc remote: Training.doc bytes received in 0.12 seconds ( Kbytes/s) ftp>

Presentation from IT CAMP-09 Setting display to your machine In your machine provide xhost + command rlogin to other machine and in that terminal set the display like setenv DISPLAY yourhost:0.0

Presentation from IT CAMP-09 Login to Unix from Windows command line telnet Using VNC starting vnc in unix machine – start vncserver look at the log to see where it is started, typically at :1, :2 – on windows start vncviewer and give ip:port – give passwd – to change passwd give vncpasswd

Presentation from IT CAMP-09 Backup services by IT IT/Systems takes care of backing up important data and files Backups are done daily, weekly and monthly basis Unix users – Backup of Backup of home area and mail Any other requested folders – No Backup of Links from home.o,.obj, *.mp3, *.jpg PC Users – Backup of the requested folder and mail

Presentation from IT CAMP-09 Accessing office network from Outside From Home and outside home VPN(Requires Managers approval) From Other Interra offices Already connected by VPN The following servers are always available from outside – Webmail, MAIL, Intranet ( limited version), VPN, JIRA

Presentation from IT CAMP-09 Conventions and Systems procedures …DOs DOs 1. Take care of systems, use them gently. 2. Change your login password periodically (preferably 1 month). 3. Switch OFF monitors before leaving. 4. Report problems immediately. 5. Maintain low noise.

Presentation from IT CAMP-09 DO NOT's 1. Never switch OFF any machine. 2. Never move hardware without prior approval. 3. Never share your password with anybody 4. Avoid unnecessary downloads (e.g songs, movie clip, any software not used for official purpose) 5. Never install any software in system. 6. Don't login or fire processes in machines which are not allocated to your group. 7. Try to avoid editing files or debugging codes in regression machines.

Presentation from IT CAMP-09 DO NOT's 8. Always keep your home directory clean. Delete any unnecessary files from your area. 9. No snacks/foods inside the Engineering area. 10. Don't keep junk stuff in home directory. 11. Don't play songs/movies online. 12. Don't print more than 25page at a time. If require pls. contact systems group. 13. Don't open mails with unknown attachment. It may contain viruses.

Presentation from IT CAMP-09 HELP Systems Kolkata : Systems Noida : Systems Bangalore : Contact FAQ Intranet/Systems/Kolkata/FAQ