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• DD-WRT with both https and sshd running in port 443

  - by Bruno

  I have a buffalo router with dd-wrt v24 SP2. After setting up the basic stuff, I enabled the https access to the admin page. Several days later, while setting up remote ssh, I changed the default port from 22 to 443. And now..well :) You got the picture :) I can ssh the router but I have no web access to it's admin page. Before rushing to a cold-hearted configuration reset, is there any way to change the ssh port from a shell? Or make dd-wrt accessible thru basic http?

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• How to run a process and completely detach it of its parent shell

  - by Bicou

  I'm running a program on a linux server that will take days to complete. I'm launching it from my workstation from an SSH terminal, as this program is command-line only. I want to be able to do all of these : launch that program, redirect standard outputs to files, exit my SSH session without making this terminate the process. I thought about $ ./MyProg.csh -params -foo -bar </dev/null 1>~/out.log 2>~/err.log & However, the process is terminated the moment I close my SSH session. My workstation is running Windows XP, and I cannot guarantee its uptime over several days, which is required for the processing of my data on the Linux server. As you may have noted, my program requires to be launched from CSH. Is it possible to do this ? Thanks.

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• Preventing - Large Number of Failed Login Attempts from IP

  - by Silver89

  I'm running a CentOS 6.3 server and currently receive emails entitled "Large Number of Failed Login Attempts from IP" from my server every 15 minutes or so. Surely with the below configured it should mean only the person using the (my static ip) should be able to even try and log in? If that's the case where are these remote unknown users trying to log into which is generating these emails? Current Security Steps: root login is only allowed without-password StrictModes yes SSH password login is disabled - PasswordAuthentication no SSH public keys are used SSH port has been changed to a number greater than 40k cPHulk is configured and running Logins limited to specific ip address cPanel and WHM limited to my static ip only hosts.allow sshd: (my static ip) vsftpd: (my static ip) whostmgrd: (my static ip) hosts.deny ALL : ALL

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• Cannot connect via OpenSSH and FTP to my ubuntu server

  - by budde

  Hello I have installed a webserver (ubuntu server 10.04) and it is connected to the internet. I can tell because the apache server apparently is working. But i can't get SSH or FTP to work. When I try to login from my laptop (SSH user@my-ip) ,SSH asks for my password, and when i give it, it does nothing! Also when I give the wrong password, it tells me that the password is incorrect. I'm also receiving an error while trying to connect by FTP. Sorry could not display all the contents of "/ on [my-ip]": DBus error

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• Most secure way to access my home Linux server while I am on the road? Specialized solution wanted

  - by Ace Paus

  I think many people may be in my situation. I travel on business with a laptop. And I need secure access to files from the office (which in my case is my home). The short version of my question: How can I make SSH/SFTP really secure when only one person needs to connect to the server from one laptop? In this situation, what special steps would make it almost impossible for anyone else to get online access to the server? A lot more details: I use Ubuntu Linux on both my laptop (KDE) and my home/office server. Connectivity is not a problem. I can tether to my phone's connection if needed. I need access to a large number of files (around 300 GB). I don't need all of them at once, but I don't know in advance which files I might need. These files contain confidential client info and personal info such as credit card numbers, so they must be secure. Given this, I don't want store all these files on Dropbox or Amazon AWS, or similar. I couldn't justify that cost anyway (Dropbox don't even publish prices for plans above 100 GB, and security is a concern). However, I am willing to spend some money on a proper solution. A VPN service, for example, might be part of the solution? Or other commercial services? I've heard about PogoPlug, but I don't know if there is a similar service that might address my security concerns? I could copy all my files to my laptop because it has the space. But then I have to sync between my home computer and my laptop and I found in the past that I'm not very good about doing this. And if my laptop is lost or stolen, my data would be on it. The laptop drive is an SSD and encryption solutions for SSD drives are not good. Therefore, it seems best to keep all my data on my Linux file server (which is safe at home). Is that a reasonable conclusion, or is anything connected to the Internet such a risk that I should just copy the data to the laptop (and maybe replace the SSD with an HDD, which reduces battery life and performance)? I view the risks of losing a laptop to be higher. I am not an obvious hacking target online. My home broadband is cable Internet, and it seems very reliable. So I want to know the best (reasonable) way to securely access my data (from my laptop) while on the road. I only need to access it from this one computer, although I may connect from either my phone's 3G/4G or via WiFi or some client's broadband, etc. So I won't know in advance which IP address I'll have. I am leaning toward a solution based on SSH and SFTP (or similar). SSH/SFTP would provided about all the functionality I anticipate needing. I would like to use SFTP and Dolphin to browse and download files. I'll use SSH and the terminal for anything else. My Linux file server is set up with OpenSSH. I think I have SSH relatively secured. I'm using Denyhosts too. But I want to go several steps further. I want to get the chances that anyone can get into my server as close to zero as possible while still allowing me to get access from the road. I'm not a sysadmin or programmer or real "superuser". I have to spend most of my time doing other things. I've heard about "port knocking" but I have never used it and I don't know how to implement it (although I'm willing to learn). I have already read a number of articles with titles such as: Top 20 OpenSSH Server Best Security Practices 20 Linux Server Hardening Security Tips Debian Linux Stop SSH User Hacking / Cracking Attacks with DenyHosts Software more... I have not implemented every single thing I've read about. I probably can't do that. But maybe there is something even better I can do in my situation because I only need access from a single laptop. I'm just one user. My server does not need to be accessible to the general public. Given all these facts, I'm hoping I can get some suggestions here that are within my capability to implement and that leverage these facts to create a great deal better security than general purpose suggestions in the articles above.

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• How to make all of my IPs works in HyperVM XEN?

  - by user758667

  I've installed HyperVM on CentOS 5.8 final to make XEN VPS. I have 5 IPs, and added them to an IPPool. They are from *.123 to *.126. But when I add Virtual machines, just the first one (which indicate to *.123 ip) works well. I mean I can ssh to it by "works well" and when I want ssh to the other ones ( *.124 *.125 ...) it says : ssh: connect to host *.124 port 22: Connection timed out after a while. I alos set gateway and netmask as it shows in my server IPAdresses for device eth0 (it doesn't make any difference if I set these or not, I get same error). What should I do now? Thanks.

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• Mount remote drive by port forwarding

  - by Anushka

  I have a windows 7 computer at home and a remote windows XP machine with an external USB drive attached to it. I would like to be able to copy files to and from home/the remote USB drive. The problem is that the only way of contacting the work computer is by first sshing into a different remote linux machine as there is a firewall that prevents direct internet connection. I can see two possible solutions but I don't know how to do them. Set up winscp using ssh port forwarding via the linux box so that I can copy to and from the two windows machines. I assume that I would need to run an ssh server on the XP machine as well to do this? Mounting the remote USB drive on the remote windows machine from the home XP machine via ssh port forwarding again via the linux box. Does anyone know how to do either solution?

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• How can I view my remote desktop that is on a subnet

  - by Noremac

  I have my ubuntu machine at work and I'd like to use remote desktop to work from home. However the remote machine is on a subnet and not directly connected to the internet. I am able to remotely connect through ssh to a server, from which I then ssh to my remote machine. This has been beneficial, however I am currently working on a GUI application so just the command line doesn't work so well. Any ideas? I have tried using ssh with the -X flag on both sessions, but this doesn't work. I am trying to connect from Windows Vista through a Mac server (isn't it a great setup?).

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• Where's my tab completion and up-arrow behavior? (Ubuntu 10.04)

  - by pastorius

  I'm new to Linux, trying Ubuntu 10.04, preconfigured by host. When I log in (SSH) using the preconfigured account, the shell prompt is: user@hostname:~$ The up arrow scrolls through the list of recent shell commands, and tab-completion works as expected. However, when I create an account and log in (SSH) using that account, the shell prompt is simply "$", and the up arrow just prints a control character (^[[A). Can anyone tell me how to get my prompt, tab-completion, and up-arrow behavior set up? The fact that I'm getting control characters when I up-arrow makes me think that my account (or session) is in some mode I'm unfamiliar with. I know there is tab-completion code stored in bashrc that I can uncomment, but that doesn't seem to have any effect, even after logging out and logging back in. Am I in some strange mode when I SSH in with the new account, or are there just some session/account settings I need to set up, and can find information for anywhere on the Internet if I just knew what to look for?

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• SSHing into EC2 instance fails - -v details below!

  - by ming yeow

  Hi folks! I created a new ec2 instance, but i am unable to ssh in with the key i normally use with my other instances. The -v details are below. Thanks! debug1: Host 'dbl01' is known and matches the RSA host key. debug1: Found key in /Users/mingyeow/.ssh/known_hosts:26 debug1: ssh_rsa_verify: signature correct debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: SSH2_MSG_SERVICE_REQUEST sent debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey debug1: Next authentication method: publickey debug1: Offering public key: /Users/mingyeow/.ssh/id_rsa debug1: Authentications that can continue: publickey debug1: Trying private key: /Users/mingyeow/.ssh/identity debug1: Trying private key: /Users/mingyeow/.ssh/id_dsa debug1: No more authentication methods to try. Permission denied (publickey).

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• How To Get SSH Command-Line Access to Windows 7 Using Cygwin

  - by YatriTrivedi

  Are you comfortable with Linux/Unix and want SSH access to your Windows 7 machine? Cygwin provides this functionality and gives you a familiar environment to work with in a few simple steps. We’re assuming you’ve got Cygwin installed and configured. If not, check out our article, How To Use Linux Commands in Windows with Cygwin to get started Latest Features How-To Geek ETC How To Create Your Own Custom ASCII Art from Any Image How To Process Camera Raw Without Paying for Adobe Photoshop How Do You Block Annoying Text Message (SMS) Spam? How to Use and Master the Notoriously Difficult Pen Tool in Photoshop HTG Explains: What Are the Differences Between All Those Audio Formats? How To Use Layer Masks and Vector Masks to Remove Complex Backgrounds in Photoshop Bring Summer Back to Your Desktop with the LandscapeTheme for Chrome and Iron The Prospector – Home Dash Extension Creates a Whole New Browsing Experience in Firefox KinEmote Links Kinect to Windows Why Nobody Reads Web Site Privacy Policies [Infographic] Asian Temple in the Snow Wallpaper 10 Weird Gaming Records from the Guinness Book

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• Text Editor with SSH/Terminal/FTP/Putty combo for develeping in Rails on Windows

  - by Panoy

  I plan to learn Ruby on Rails and would like to code in my development box which runs on Windows XP. I have Ubuntu Server (forgot the version ;p) running as my web server with Rails installed on it. I have been considering using Vim as my text editor of choice in XP but would like to know any text editor and accompanying shell/FTP/Putty/SSH (or whatever you may call it) program that can access those files in my Ubuntu server. It is better if the shell can be called or is bundled inside the text editor. I would like to know your combinations (text editor + shell) and your experiences on it when you were able to develop your Rails projects on that combination. Cheers!

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• Sound notification over SSH

  - by Lekensteyn

  I just switched from the Konversation IRC client to the terminal based IRSSI. I'm starting IRSSI on a remote machine using GNU screen + SSH. I do not get any sound notification on new messages, which means that I've to check out IRSSI once in a while for new messages. That's not really productive, so I'm looking for an application / script that plays a sound (preferably /usr/share/sounds/KDE-Im-Irc-Event.ogg and not the annoying beep) on my machine if there is any activity. It would be great if I can disable the notification for certain channels. Or, if that's not possible, some sort of notification via libnotify, thus making it available to GNOME and KDE.

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• Keyboard layout issues using Ubuntu 12.04 in ssh via X11 for mac

  - by LostInTranslation

  I just upgraded from 10.04 LTS to 12.04 LTS on my server (DELL Intel XEON). By SSH login from my mac (OS X Lion) everything is fine (no issues with command lines) but when I open a window through X11, the keyboard layout is now completely messed up. As an owner of a french mac keyboard, I got used to such issues and could deal by guessing the "QUERTY" keys, but this time it's worse. To fix it, I tried: 1/ sudo dpkg-reconfigure keyboard-configuration = no effect 2/ sudo gnome-control-center then change the keyboard settings, however adding a couple of keyboard layouts did not change anything. I feel there is something to do with the X11 forwarding. Any hints? Thanks

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• Use ini/appconfig file or sql server file to store user config?

  - by h2g2java

  I know that the preference for INI or appconfig XML is their human readability. Let's say user preferences stored for my app are hierarchical and numbers about a thousand items and it would be really confusing for a user to edit an INI to change things anyway. I have always been using a combination of INI with appconfig. I am leaning towards using sql server db file, now. Every time the user changes a preference while using the app, it would be stored into the db file - that's my line of thought. I am also thinking that such a config db file could move around with the app too, just like an INI. Before I do that, any advice 1. If there are any disadvantages against using a db file over INI or appconfig. 2. If a shop uses mysql or oracle, do you think your colleagues would lift up their pro-mysql or pro-oracle eyebrow questioning why you would use sql server technology in a mysql or oracle shop? I mean, I am just using it like an INI file or app.config anyway, right?

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• How to increase screen resolution in Hyper-V

  - by Saad

  I am using Ubuntu 12.04 on Hyper-V in windows 8. I want to increase the resolution so that Ubuntu window can occupy my whole screen. Does anyone have any idea of how it can be done ? I found one solution http://nramkumar.org/tech/blog/2013/05/04/ubuntu-under-hyper-v-how-to-overcome-screen-resolution-issue/, I have installed OpenSSH server on Ubuntu and Xming and Putty on windows. I am not sure what hostname to use to connect to Ubuntu (running in Hyper-V), using [email protected] or username@localhost in the hostname field returns error "Network error:connection refused". Can someone help me figure out what i am doing wrong ?

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• Issue with gpg agent in Ubuntu 12.04 after installing gnome3 shell

  - by Jeroen

  I just did a fresh install of Ubuntu 12.04. Initially things were working. But after I installed some software, the 'gpg agent' is unresponsive. I suspect it has something to do with upgrades that I downloaded from the gnome 3 ppa. When I try to sign a package, it terminates with: gpg: problem with the agent - disabling agent use debsign: gpg error occurred! Aborting.... debuild: fatal error at line 1271: running debsign failed The GPG gui tool (called "Passwords and Keys" or seahorse) isn't starting anymore either. When I click it, it tries to start and then gives up and dies after a couple of seconds. I am not sure where to look for log files of gpg agent. The only thing that I see in /var/log is in auth.log that says: May 1 20:04:14 jeroen-ubuntu gnome-keyring-daemon[1997]: couldn't create prompt for gnupg passphrase: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.keyring.SystemPrompter was not provided by any .service files Not sure if it is related, but when I try to start seahorse from the command line, I get: jeroen@jeroen-ubuntu:~$ seahorse (seahorse:4828): GLib-GIO-ERROR **: Settings schema 'org.gnome.crypto.pgp' is not installed Edit: I fixed the seahorse GUI by manually downloading and reinstalling gnome-keyring version from precise instead of the ppa. However, I still cannot sign packages.

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• Cannot write to Folder mounted with SSHFS

  - by JM at Work

  I just created a folder according to SSHFS (Ubuntu Docs) sudo apt-get install sshfs sudo gpasswd -a jm fuse sshfs -o idmap=user [email protected]:/path/to/folder folder Then I found that the folder is mounted, but I cannot write to it. The permissions seems fine http://pastie.org/1969299 But I even tried with chmod -R 777 ./folder Still no go UPDATE: It seems I can't write using NetBeans only. But it works with LeafPad for example

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• New DevExpress Web.Config Settings

  Starting with DXperience v2010.1, were making a small and useful change. Were adding a new section to the web.config file for settings used by DevExpress ASP.NET controls. New Section Heres the default section that youll find at the bottom of a new web project using DXperience v2010.1 release: <devExpress> <compression enableHtmlCompression="false" enableCallbackCompression="true" enableResourceCompression="true" ...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Unmet dependencies when trying to install openssh-server

  - by Sabiya

  I am running sudo-apt get install openssh-server on Ubuntu 12.04 64 bit system. It is giving me the following output. $ sudo apt-get install openssh-server Reading package lists... Done Building dependency tree Reading state information... Done You might want to run 'apt-get -f install' to correct these: The following packages have unmet dependencies: gcc-4.6 : Depends: libgcc1 (>= 1:4.6.3-1ubuntu5) but 1:4.6.2-14ubuntu2 is to be installed libc6 : Depends: libc-bin (= 2.15-0ubuntu10.1) libc6-dev : Depends: libc6 (= 2.15-0ubuntu10) but 2.15-0ubuntu10.1 is to be installed libgcc1 : Depends: gcc-4.6-base (= 4.6.2-14ubuntu2) but 4.6.3-1ubuntu5 is to be installed libxplc0.3.13:i386 : Depends: libc6:i386 (>= 2.5-5) but it is not going to be installed Depends: libgcc1:i386 (>= 1:4.2-20070516) but it is not going to be installed Depends: libstdc++6:i386 (>= 4.2-20070516) but it is not going to be installed E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).

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• Permanent redirect domain to www subdomain without web.config

  - by Lord Simpson

  I've just set up a site via 1and1 and have run into an issue, I want to accomplish the simple task of redirecting the root domain to the www sub domain however due to complications I cant seam to find a way to get it to work. I'm on a Microsoft (asp.net) package so can't use .htaccess, also the IIS server they have doesn't have the URL redirect module installed (so can't use <rewrite> in web.config). They have built in HTTP forwarding options however if I set the root domain to redirect to the www sub domain it just infinitely redirects. Hopefully there is some obvious option/method I've missed during the past two days of searching!

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• Cannot log into Cinnamon after deleting ~/.config

  - by msoa

  After I removed "./.config" from Home folder, I can not log in to the cinnamon session: failed to load session "cinnamon" What do I do? xsession-error: Xsession: X session started for tux at Fri Oct 26 06:35:58 IRST 2012 localuser:tux being added to access control list Setting IM through im-switch for locale=en_US. Start IM through /etc/X11/xinit/xinput.d/all_ALL linked to /etc/X11/xinit/xinput.d/default. Failed to connect to the VirtualBox kernel service Failed to connect to the VirtualBox kernel service Failed to connect to the VirtualBox kernel service Failed to connect to the VirtualBox kernel service I am runing Cinnamon on a local machine, no on Virtualbox. but virtualbox is installed for some usage. !?

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• How to config multiple monitor with optimus?

  - by irrational

  I have an Acer Aspire 8951G running 12.04 Pangolin with bumblebee working beautifully. My problem is that when I connect either the VGA port or the HDMI to my projector there is no way I can see to properly set up the resolutions or colours. The default basic display driver sees the projector correctly, but messes up colours and resolutions (on hdmi) and resolutions on VGA. (Its a 1280 X 720 projector) Am I missing some sort of Xorg configuration? nvidia-xconfig does not seem to exist and running optirun nvidia-settings -c :8 opens the settings, but of course only for the one display. I just want a way to set a default config for my projector via VGA or preferably HDMI. Any help would be wonderful.

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• Encrypting and decrypting single file with master password and passphrase

  - by Iori

  Last night my system shutdown unexpectedly and when i restart it, it gave me superblock error. will then i fixed a little but. i was able to retrive my encrypted files which i encrypted my pgp public key but i was not able to retrive my private key or public key now i have ecrypted file which cannot be open because i have lost my private key. is there any way that i can encrypt my file by providing only master password and passphrase and no physical key or private key and when i am on another computer i can easily open it my same master password and passphrase. Thanks in advance

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• Backup systems config files

  - by David ???

  I'm planning on installing nVidia proprietary drivers on my Ubuntu 10.10. Historically this always ends-up with me being left with no graphical interface. No ability to revert - and reinstalling the whole system. So now, before trying this anew, I wish to backup all relevant config files. I'll try 1 or 2 methods. I'll list each one's commands. I'll appreciate if anyone can tell me how to backup the relevant file, or what's the reverse of this operation. 10x, David Method I - as described here: apt-get --purge remove xserver-xorg-video-nouveau As described in this answer: edit /etc/default/grub and add the line GRUB_CMDLINE_LINUX="nouveau.modeset=0" sudo update-grub Reboot Install original drivers downloaded from nVidia site. Method II - as described here: sudo apt-get purge nvidia* [possibly 'sudo gedit /etc/modprobe.d/blacklist.conf' adding 'vga16fb' 'nouveau' sudo apt-get install nvidia-glx-185 sudo modprobe nvidia sudo lsmod | grep -i nvidia sudo nvidia-xconfig

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