How to Transfer Files from One Linux Server to Another. In a multiserver Linux environment, many tasks involve moving one or more files from one server to another. Im trying to write a bash script that uploads a file to a server. How can I achieve this Is a bash script the right thing to use for this The DroboPix app backs up your photos and videos on your Android or iOS device by automatically uploading the files to your network attached Drobo the 5N2 or B810n. A list of 3. 5 Useful SSH Commands. If you are running your own VPS chances are this list of SSH commands could come in handy. Heres the deal When I first started configuring my server I didnt know much about well anything. So I had to learn a few things about servers Linux, Ubuntu and especially a few SSH commands. SessionJobBreakaway-BvRun.png' alt='Ssh Move Files To Server' title='Ssh Move Files To Server' />I actually wrote a step by step guide on how to set up a Digital. Ocean droplet with Server. Pilot and Word. Press. If you are on a PC and want to use this list of SSH commands you will need a terminal emulator such as Pu. TTy to connect to your server. What Is Pu. TTy Simply put Pu. TTy is an open source SSH client used to connect to a remote server. Its basically a terminal emulator for Windows based operating systems. A terminal emulatorMany thanks to Jon Lee at jonlee. SSH and puTTY. exe terminal emulator. Secure Shell SSH is a set of network protocols for securing connections between computers, as well as the utility suite that implements these protocols. The SSH. What is Subversions clientserver interoperability policy The client and server are designed to work as long as they arent more than one major release version. How to mange and configure Linux internet security. Secure a Linux server against network attacks and test the effectiveness of the configuration. Learn how to connect to your Web server via SSH, and issue some basic UNIX commands. I know that you can use sshkeygen to generate a publicprivate key pair. Then you can install the public key on a remote server. You can then login without supplying. My next plan I will post other articles of basic guides how to do things in your server via SSH. Browse it all here. Requirements To SSH. A working SSH client like. Ssh Move Files To Server' title='Ssh Move Files To Server' />What is that To understand this you must first understand how Linux servers work. Say you have a server set up. Now To connect to your server from your PC you can use Pu. TTy and type simple SSH commands to perform different basic actions such as creating folders, copying them and so on. Linux already has a terminal. So if you are running Linux as your desktop OS you dont need a ssh client because you can use the already build in terminal. Connecting to server using SSH from a Linux terminal. But if you are on a Windows machine, that s where Pu. TTy comes in handy. It enables you to connect to your Linux server via SSH. It sounds quite complicated but in reality it really isnt. Ssh Move Files To Server' title='Ssh Move Files To Server' />How To Use Pu. TTy To Login To Your Server. As I previously mentioned Pu. TTy is used to connect to your Linux server from a Windows based machine. What you will need A Linux based server. Pu. TTy installed on your computer. The servers IP address. Username. Password. Usually all the information you need is emailed to you by your cloud hosting provider automatically when you create a new server. Once you have all the necessary information you can proceed connecting to your VPS using Pu. TTy. Heres how Download Pu. TTy and save it on your desktop. Screenshot-199.png' alt='Ssh Move Files To Server' title='Ssh Move Files To Server' />You dont have to install it just click on it and it will run out of the box. When you first open the program you will see something like this Out of all those options we are interested in welljust one and thats the Host Name fieldthe IP address. Thats where you will need to input your own servers IP address in order to connect to it. Just enter the IP address making sure the connection type SSH is checked and port is 2. Hit open. You will be presented with a black screen like this I remember first when I saw this I freaked out but instinctively I knew I had to login first. Just enter your username and then your password. To copy paste in Pu. TTy just right click and it will automatically paste. Note Ubuntu does NOT show passwords not even asterisks so dont worry when you are typing your passwords and nothing shows on the screen. And tadaaa Youve successfully logged on to your server. Useful SSH Commands. Now that you know how to use a SSH client we can take a look at a few useful ssh command lines and what they do. Ive compiled this list of SSH commands for anyone who struggles to managed their Linux servers. Basic Navigation. How to find out where you are pwd. Type pwd to see where on the server you are. For example if I type pwd in Pu. TTy it returns root. Navigate to cd The cd command also known change directory is used to navigate into a specified directory on your server. Such as cd home moves you into the home folderExample or. Say I want to navigate to the etc directory. All I have to do is type cd etc. Example 3. The same directory cd. The cd. command does basically nothing. Using this command you will remain in the same directory you were. Move me up one directory cd. Remember the previous command Well I included it for a reason Add another dotstop to cd. Go to the previous directory cd The cd command is used when you want to go to the previous directory. Go to Home folder cd The cd commands is used when you want to go to the home directory on your server. Go to root cd The cd command is used when you want to jump to root. List Directories and Contents. List files ls usage ls option fileUsing the ls command in a folder will display all its content. Such as ls home. Will return all content of the folder home. Show me all files in a directory ls a 1. Show contents with file size ls h If you wish to see a directorys contents with file sizes just type ls h. How to list sub directories recursively ls r The ls r command is used to list sub directories recursively. How to list files by file size ls is. Use this ssh command to list files by size. List all folders in directory with details ls alh This one is very useful when you want to see more details about certain files. For example you may want to know file permissions of a directory. Copying files. 14. Copying a file cp To copy a file just use the cp ssh command. Example cp filename. Copy a folder with all files cp r This one is used to copy the entire folder with all its contents. Copy and renamecp filename. Moving files. 17. Moving a file mv Example mv page. Move and rename mv page. Move file up one directory mv filename. Creating filesfolders. Create a folder mkdir example mkdir new folder. Create a file touch Use the touch command to create different files and file extensions you can later edit themExample touch index. CompressingDecompressing files. Compressing folders zip r foldername. Example zip r newfolder. Decompressing folders unzip Example unzip newfolder. Compressing folders using tar czvf tar czvf foldername. Example tar czvf wp content. Decompressing folders using tar czvf tar xvf foldername. Example tar xvf wp content. DeleteRemove files. Delete a file rm To delete a file on your server just use the rm command. Example rm index. Delete all files from a directory rm This command is used to delete all contents from a directory. Example rm foldername. Delete a folderdirectory rmdir Use this command to remove directories. Heres how rmdir foldername. File permissions. Change file permissions chmod Example chmod 7. Change permissions of folder and all files inside chmod r This command comes in handy when you want to change file permissions of an entire folder including its contents. Miscellaneous. 31. Memory usage free m Great command to monitor memory usage What user am I whoami If you dont know what user your are just use whoami. Show network connections netstat Displays current networks connections. Monitor CPU, processes and memory top. Type to to monitor CPU usage, processes and RAM. Display sever disk usage df h. If you want to see how much disk is used on your server just type df h. What about you Are there any SSH commands you would like to share Did I forget to include a must know SSH command Just let me know in the comments bellow and I will be more than happy to include it. Linux Internet Server Security and Configuration Tutorial. Basic Security Steps Overview. Perform the following steps to secure your web site. See Distribution erratas and security fixes See Yolinux home page for list. Red Hat Linux ErrataUpdate your system where appropriate. Red HatCent. OS. Print list of packages to be updated. Note that this can be automated using the etcinit. RHELCent. OS 5 or create a cron job etccron. R 1. 20 e 0 d 0 y update yum. R 1. 0 e 0 d 0 y update. UbuntuDebian. apt get updateUpdate package list to the latest version associated with that release of the OS. Reduce the number of network services exposed. These will be started by. See full list of services in etcinit. There may be no need to run sendmail mail server. RPC listener required by NFS. Line printer server daemon. Hackers probe my system for this service all the time. News server, linuxconf etc. For example, sendmail can be removed from the boot process using the command. The service can be terminated using the command etcrc. At the very least one should run the command chkconfig list. Sims 3 Skeleton'>Sims 3 Skeleton. See the Yo. Linux init process tutorial. Verify your configuration. List the open ports and processes which hold them netstat punta Also try netstat nlp. List RPC services root rpcinfo p localhost. Ideally you would NOT be running portmapper so no RPC services. Turn off portmapper service portmap stop or etcinit. Portmap is required by NFS. Anonymous FTP Using wuftpd Last shipped with RH 8. RH 9 and FC use vsftpd. By default Red Hat comes configured for anonymous FTP. This allows users to ftp to your server and log in with the login. If you wish. to turn off this feature edit the file etcftpaccess and change. For more on FTP configuration see Yo. Linux Web server FTP configuration tutorial. Use the find command to locate vulnerabilities find suid and guid files which can execute with root privileges as well as world writable files and directories. For example. find xdev perm 4. Remove suid privileges on executable programs with the command chmod s filename find xdev nouser o nogroup print. Find files not owned by a valid user or group. Use the command chattr. Make a file un modifiable chattr i binls. Make directories un modifiable chattr R i bin sbin boot lib. Make a file append only chattr a varlogmessages. Use tripwire. sourceforge tripwire. Tripwire is offered as part of the base Red Hat and Ubuntu distributions. Tripwire configuration is covered below. Watch your log files especially varlogmessages and. Avoid generic account names such as guest. Use PAM network wrapper configurations to disallow passwords which can be. PAM authentication can also disallow root network login access. Default Red Hat configuration. You must login as a regular user and su to obtain root access. This is NOT the default for ssh and must be changed as noted below. See Yo. Linux Network Admin Tutorial on using PAMRemote access should NOT be done with clear text telnet but with an encrypted connection using ssh. Later in this tutorial. Proc file settings for defense against attacks. This includes protective measures against. IP spoofing, SYN flood or syncookie attacks. DDo. S Distributed Denial of Service attacks The only. Lots of processing power or a firewall are useless. Unfortunately the packets are usually spoofed and in my case the FBI. If the server is a remote server, have a dial up modem or. IP address and route for access because the attacked route is. You can also request that your ISP drop ICMP traffic. IP addresses of your servers. UDP if all you are running is a. DNS name servers use UDP. For very interesting reading see The Strange Tale of the GRC. DDo. S attack. Very interesting read about the anatomy of the hacker bot networks. User access can be restricted with the following configuration files. See Yo. Linux Sys. Admin tutorial restrict users. Remove un needed users from the system. See etcpasswd. Red Hat installations have many user accounts created to support. It you do not intend to run these processes, remove. It is best for security reasons that you reduce the number. The more services exposed, the greater your. Reduce the number of network services accessible through. Red Hat 7. 0 and earlier. Comment out un needed services in the etcinitd. Sample FTP is the only service I run. Restart the daemon to apply changes etcrc. Red Hat 7. 1 and later. All network services are turned off by default during an upgrade. Sample file etcxinetd. Default is off. This line controls xinetd service enabled or not. DURATION USERID. logonfailure USERID. Turning onoff an xinetd service. Edit the file etcxinetd. Changing to the line disable yes turns off an xinetd service. Changing to the line disable no turns on an xinetd service. Xinetd configuration must be performed for each and every file in the directory. Restart the daemon to apply changes etcrc. You may also use the command. ORchkconfig wu ftpd off. This will edit the appropriate file etcxinetd. Tip List init settings including all xinetd controlled services chkconfig list. List status of services Red HatFedora Core based systems service status all. Ballad Of Jed Clampett Banjo Tab Pdf more. Kernel Configuration. Use Linux firewall rules to protect against attacks. Access denial rules can also be implemented on the fly by portsentry. Place at the end of etcrc. A INPUT p tcp s 00 d 00 dport 2. DROP Block NFS. Halo 4 Pc Game Full Version. A INPUT p udp s 00 d 00 dport 2. DROP Block NFS. A INPUT p tcp s 00 d 00 dport 6. DROP Block X Windows. A INPUT p tcp s 00 d 00 dport 7. DROP Block X Windows font server. A INPUT p tcp s 00 d 00 dport 5. DROP Block printer port. A INPUT p udp s 00 d 00 dport 5. DROP Block printer port. A INPUT p tcp s 00 d 00 dport 1. DROP Block Sun rpcNFS. A INPUT p udp s 00 d 00 dport 1. DROP Block Sun rpcNFS. A INPUT p all s localhost i eth. DROP Deny outside packets from internet which claim to be from your loopback interface. Allow loopback access. This rule must come before the rules denying port access A INPUT i lo p all j ACCEPT This rule is essential if you want your own computer. A OUTPUT o lo p all j ACCEPT to be able to access itself through the loopback interface. A input p tcp s 00 d 00 2. REJECT Block NFS. A input p udp s 00 d 00 2. REJECT Block NFS. A input p tcp s 00 d 00 6. REJECT Block X Windows. A input p tcp s 00 d 00 7. REJECT Block X Windows font server. A input p tcp s 00 d 00 5. REJECT Block printer port. A input p udp s 00 d 00 5. REJECT Block printer port. A input p tcp s 00 d 00 1. REJECT Block Sun rpcNFS. A input p udp s 00 d 00 1. REJECT Block Sun rpcNFS. A input j REJECT p all s localhost i eth. Deny and log l outside packets from internet which claim to be from your loopback interface. INPUT and ipchains uses the lower case. View rules with iptables L or ipchains L command. When running an internet web server it is best from a security point of. NOT run printing, X Window, NFS or any services which may. Use portsentry to monitor network hacker attacks and dynamically assign firewall rules to thwart attackers. Later in this tutorial. A monolithic and minimal kernel might also provide a small bit of.