General :: Security - Allow Anonymous Ssh Login To A Box And Only Run One Program?
Feb 25, 2011
I have a text based game installed on a Linux server, and I would like to allow logins on that server via SSH, but with restrictions.The login should go directly to the game which reads keyboard input from stdin. If the game quits the user should be immediately disconnected from the server. Alternately, if the user logs in there should only be one command available to the user, the game.I have thought about using a web based interface to the game, but there is something about playing the game in a terminal that just feels right.Please don't reply with "this is a bad idea..." or its variants because that is an easy out. I just want to know if anyone knows of a solution.
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Sep 27, 2010
im using default setting for proftpd and having two major problem for me at least
1. how to disable anonymous login?
2. how to make proftpd login using my default box login?
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Mar 24, 2011
obviously it's at least difficult but I'm interested in knowing if it's theoretically possible to allow anonymous users of vsftpd to upload to the same directory that anon_root is set to. If it's not then it's no big deal, I'm just trying to get a sense of the range of possibilities.
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Feb 2, 2010
Hope you can help me out. I'm trying to setup a "drop-box" on ubuntu 9.10 server with vsftpd. I'm able to login and land in the /home/user directory, however I cannot write anything.
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Mar 21, 2010
I'm trying adjust my proftpd server's settings, that anonymous users could download what they need smoothly.
A small problem made me so bemused:
In the configuration file of proftpd, I place the following setting section in the <anonymous> section,
Code:
After restarting the proftpd server and applying the configuration, I try downloading a file in IE browser. Sometimes, it prompts a saveas dialog, and everything was okay.
However, it occasionally prompts a login form instead of a SaveAs dialog. This makes our customers confused greatly.
So, how could I prevent browser from prompting login form when anonymous users try to download files from our ftp server?
Quote:
OS: CentOS 5.3
Server: ProFTPd 1.3.1
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Feb 5, 2010
I have installed vsftpd by "yum -y install vsftpd",disabled anonymous login and set .When I use a linux client's file browser to login using a user account "ftpacc" by ftp://ip_address, its location is "/" instead of /home/ftpacc".When I use a window client to login, its location is "/home/ftpacc"
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Jun 28, 2010
Where or How do i get the link or program to download personal security manger on my computer ?
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Mar 18, 2011
I'm the only user of my PC and as of upgrading to 10.04, I get a login screen, that requests only a password, when the PC goes idle.
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Apr 5, 2010
I have a habbit of openning a 2 sessions of xwindow (I'm using KDE), one as user to browse the internet and the other as root to do some admin work. But someone told me that login to KDE as root is bad in terms of security. Is this true?
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Jan 19, 2010
ubuntu 9.10 login panel is worse with respect to ubuntu 8 since now all the users with names are shown without a way to hide them!Why don't keep the old way at least as an option?
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Mar 3, 2011
i updated both browsers i have and lost my secure log-in pages (no padlocks showing ) concerning different Web mail accounts.Just before i did these updates i checked an unrelated thing on-line regarding my sound card of which i kept a copy of and got this message below :
!!ALSA/HDA dmesg
!!------------------
[ 12.762633] cfg80211: Calling CRDA for country: AM
[code]....
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Dec 14, 2010
I'm seeing really bad user login format under a standard installation and am wondering why ubuntu does this as default. I have noticed that the graphical login for gnome sizes itself to accommodate a user's exact password length. This indicates to me that somewhere on the unencrypted part of a standard installation with user encryption contains at least some indication of the content of the password length which seems a security flaw even if not a complete hole, it majorly reduces the number of attempts a cracker would have to cycle through.
And that's assuming that *only* the length is contained. Furthermore it seems that it would be MUCH better to simply display the number of characters entered into the pw field and allowing the gui to expand itself from an fixed size as the field is filled out so the the user still receives visual feedback for entering characters. Either a simple character count display should be entered into the field or a 10 dot to new line so that one can visually quickly count the number enter by multiplying from a 10base graphical observation.
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Aug 27, 2010
just migrated to Lucid from Jaunty and noticed that the login startup screen looks more like windoze (shows all authorized users).One of the endearing security checks with Unix was that if you had access to a console you had guess both userid AND password - the system wouldn't tell you which was wrong.I feel that we have lowered security by making the list of authorized users visible on a console. Is there any way to turn it off and force users to enter both userid and password?
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Sep 8, 2010
Whenever I login as root, an e-mail with the subject "Security information" is sent outwhere the e-mail address for this message is configured? I need to change it (or perhaps disable it).
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Feb 9, 2011
I have the following inside /etc/security/limits.conf(I have specified root separately because * will not include it.)
user2 - core unlimited
* - core 0
root - core 0
[code]....
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May 27, 2011
I want to set up a special user, when this user login in locally or remotely, a special program will get run for him. ter this program exist normally or not, the telnet connection should close
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Sep 8, 2010
I like the asterisks appearing when I key in my password when logging in.
The new /bin/login program (from the shadow package in a) on SL13.1 no longer accepts the GETPASS_ASTERISKS value in /etc/login.defs.
I want to recompile the old SL13.0 version and replace the new SL13.1 version with the recompiled old SL13.0 version.
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Jan 25, 2011
If this is not the correct place for this question, let me know Basically, I looked on my system and found 2 log files :
hs_err_pid29717.log
hs_err_pid29774.log
I found that they belong to "HotSpot"? But, I never downloaded/installed HotSpot.I did a "last" and saw that only local machines have logged into the one with logs:IP addrsses of 192.168.1.xxx
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Aug 9, 2010
I set up an FTP server with two separate directories. One of them is mine, and the other one is shared (for anonymous ftp). The layout is like this.
/home/hallvor <---- this is my ftp directory where I keep my private files. I am the only user.
/home/ftp <---- this is the shared ftp directory with anonymous login.
Whenever I transfer files from my ftp directory to the public /home/ftp, I would like to: prevent anonymous users from deleting files in /home/ftp or uploading their own files to that directory (read only) What permissions must I set? I think this is all a bit confusing. I tried to chmod /home/ftp to 644 and change ownership to root, but that made it impossible to even log on anonymously.
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Jun 26, 2011
I've managed to set up a ftp server with gadmin-proftpd, i need to access the "Downloads" folder from the "Home Folder" but it won't allow me, I've set up the login fine, I just can't get it to show the directory.
Status: Connecting to
Status: Connection established, waiting for welcome message...
Response: 220 My FTP Server
Command: USER rLLZORS
[Code]....
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Jun 24, 2010
Running Debian 5. I have a small server that needs to provide anonymous ftp service (download only) to the folks in my dept (we have a firewall that will keep outsiders out, so I'm not worried about outside folks getting to the files). The question is: which anonymous ftp server should I install? Something that can be installed via "apt-get install xyzzy", where I can edit the /etc/xyzzy.conf file to point to the /home/ftp directory, and start/stop it with /etc/init.d/xyzzy start|stop|restart command.
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Sep 4, 2010
vsftpd is working fine in my network with anonymous user but i need to access that from out-side all the setting is done on the router. I am getting page to access ftp form out-side but only for ftp users not anonymous user how i will give permeation to access ftp to anonymous user ?
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Jan 19, 2010
Does RHEL install using FTP support username/password without the GUI? I need to secure my RHEL network FTP hosted from Windows 2k3r2 Weird problem happened... maybe my code is wrong in default.cfg:
ks=ftp://usernameCOLONpassword@192.168.0.1:50/rhel32/ks.cfg (more below)
Symptoms:
1) Kickstart found with anonymous ftp using ks=ftp://192.168.0.1:50/rhel32/ks.cfg (with IIS anonymous on)
2) GUI mode works when I select non-anonymous and enter a windows username/password
3) how do i do it using default.cfg instead for the GUI???
OS: RHEL5u4 Client CD over network install using IIS FTP PXELinux: Latest verrsion
[Code]...
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Jul 3, 2010
Fedora 9 used to support a timed login via the gdm program. This feature no longer works with the gdm that comes with Fedora 13 (gdm-2.30.2-1.fc13.i686 ). I made modifications to /etc/gdm/gdm.schema as follows:
[code]...
Is there something else I have to change now?
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Aug 4, 2009
I'm using a program on a group of servers which contact each other using SSH. I've got the authentication keys setup with no password but when one box tries to connect to another it wants the password for the user it's trying to communicate with. So the main problem is there is a lot of communicating within this program so it's important to allow each box communicate with each other without the use of a password. I'm using OpenSSH 4.3 with OpenSSL 0.9.8 on Red Hat Enterprise Linux Server 5.3 (Tikanga). I'm also using SSH on Ubuntu(Intrepid) to connect to these servers at the mo as i don't have direct access to the boxes.
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Jan 27, 2010
How to configure SELinux to open PDF files only by Adobe Reader and other programs can't do that?
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Jun 7, 2010
Certain commands like:
fdisk -l
nmap -sT 192.168.0.1/24
iftop
require administrator privileges to run. A while ago i read a post(forgot where i read it) about being able to let a user run these commands in a script (that contains the desired command) created by the administrator/root without the user having to do a sudo and entering a password. Does anyone know how i can go about doing this?
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Jul 3, 2010
last night when i turned off my comp there was this box saying that "Unknown" program is not responding.i included a screenshot. just wondering if i should be suspicious.
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Nov 8, 2010
im looking for a good brute force program that has i gui. i used to use brutus on windows but now im only running ubuntu so i need to find one.
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Jan 4, 2010
I am trying to learn how a buffer overflow works, but I need to have an executable stack for it to work. How do i enable this for an individual program? I am using Arch linux and X86_64 btw
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