I did chmod -R g=rwx on /bin , /sbin
now I can not connect to the machine using root through telnet, ssh, scp, rsh or any means.
I'm a computer technician and I'm interested in learning Linux. I did some research about the different distributions last night decided to try Fedora. I downloaded the latest version of it and installed it onto a brand new machine in my office. Is there a website out there that I can use as a guide for all of the Linux commands. I know that if I wanted to I could just learn my way around the gui, but I want to REALLY learn Linux. I also want to be able to telnet into the machine so that I can access it remotely. How can I set that up? I installed Fedora with all of the default settings and didn't change anything.
View 4 Replies View RelatedI'm trying to make an SSH script for my place of employment. This script, I want to go out to the server hostnames we have specified (in another file) and change a users account password. We use Kerberized telnet, so if telnet root hostname fails, I want it to use ssh username hostname and use the old password (specified). If both fail, I want it to ask the user what the port should be and input the port in the ssh command.
But I'm having a issue having it try telnet root hostname and if it fails then, try to ssh in, I have no clue how to have it proceed. Is it an if statement? Here's the telnet failed message: telnet: Unable to connect to remote host: Connection refused
I am using lxterminal to connect to a telnet session on another *nix box.
After I connect, I always have to enter the command
Code:
export TERM=xterm
is there anyway to automate this?
I've a Windows 7 host OS and I've installed Fedora 11 as a Virtual OS using Virtualbox.I want a friend of mine to connect to my Fedora server using telnet from internet. What I would like to know is how do i configure my Virtualbox to allow my friend to connect to my server. Also, is there any setting I need to change in Fedora to allow this?
View 9 Replies View RelatedI am doing some R&D on 11g RMAN in oracle at home. i have installed oracle enterprise linux and i have installed oracle software. when i am trying to configure listener, it is error-ed out. i have verified that telnet with the port is not working and i am seeing connection refused error.
View 3 Replies View RelatedAs I login as root, the bash is /sbin/sh. So I have problem to run script under /ect/rc3.d/myScript
So I want to change the bash from /sbin/sh to /bin/bash.
Right now I have a machine set up running Fedora. I have configured inittab to accept Console Logins, but I am having problems getting my netbook running PuTTY to connect. How would I go about finding the Host Name and Port to connect to?
View 6 Replies View RelatedWhen I try to issue "su -", I get "su: Authentication failure", and I'm 100% sure password I enter is ok.
I think it started to happen after I issued
chmod +s /usr/bin/screen
chmod 755 /usr/bin/screen
which I believe is unrelated to this problem, and,
chmod -s /bin/su (-s by mistake)
chmod 755 /bin/su
which most probably made the whole mess...
this is not the part of the problem I believe but here's some background why I did that... when trying to make possible for screen sessions to be started automatically on boot under non-root account, I entered something like "su - username -c "/usr/bin/screen -dmS screenname ./executable-file"" in bootmisc.sh, but I was getting "must run suid root for multiuser support", so I tried to fix it, and now I can't login to root account no way.
I'm running a server with CentOS 5 where the software that needs to run on the server uses ifconfig to verify the system IPv4.The problem is that /sbin isn't set for the user that is supposed to run the software (sadmin) which means the software can't execute ifconfig and thus terminates.now the workaround I've been using is simply to input.
View 10 Replies View RelatedI have been searching for the past hour trying to figure out how I can enable telnet on my Ubuntu 10.10 Virtual Machine.I am using VirtualBox to run my VM. I am trying to access that VM using PuTTy but most everything I have seen says I have to enable telnet first.The directions that I have found say to go to System > Administration > Services and enable telnet.I have nothing called Services under Administration.
View 9 Replies View RelatedI am setting up Ubuntu to be a firewall type device for a windows computer. (I later want to use Internet sharing or something like that.) The Ubuntu machine has two NICs. The internet NIC works but one light is always orange (even when there is no patch cable connected to it). I can access the Internet fine from the Ubuntu machine. I have a cross over cable connected to the second NIC. This cable connects to the Windows laptop. The windows laptop can ping the Ubuntu machine. But I cannot ping the windows machine from the Ubuntu machine. When I try to telnet to the Ubuntu machine from the Windows machine (over port 23 or 80) it says "cannot connect."
From the Ubuntu machine I issued this command:
# iptables -A INPUT -p tcp --dport 80 -j ACCEPT
I used ufw status and found that the firewall was not enabled on the Ubuntu machine. The default gateway of the second NIC is the IP address of the Windows machine. The default gateway of the Windows machine is the IP address of the Ubuntu machine.
I want to have two kind of users in a work machine having ubuntu 10.04,
1) He is the admin, have sudo privilages and install, do all types of work, his username is abhilash
2) A user who is normally a IT administrator, who can just install or remove softwares, but cannot access files of abhilash.
I'm trying to do this and my head is going blank, The problem where i'm stuck is, if IT admin can install softwares, then he can become sudo as sudo su, then he can view my files
So here is a small test i did, first with abhilash.
Code:
Now others and group don't have any permissions! But when IT Administrator becomes root, he can see this file
Code:
I have my own 16GB sandisk cruzer flash drive, I've already mounted him and can read on my own user, but I can write on it only using root. how can I give my user Chmod +x on the folder /media/XXX ?
View 7 Replies View RelatedWhy am I not able to telnet to a Windows server machine? Is it because the telnet server is not running there? A remote desktop connection works though.
Does a telnet server run by default on a Unix machine?
I have been trying to shutdown a remote XP machine but cannot get it to budge. I did the following on the Windows box:
Ensured no firewall
Started Remote Registry Editing service
Shared a network drive (to enable file sharing?)
Created a user 'shutdown' specifically for shutting down
Added 'shutdown' to Administrators group
Added 'shutdown' to the list of allowed shutdown users in gpedit.msc
Here's what I have tried:
From Windows 7 box:
shutdown -m computer (Access denied message)
psshutdown -m computer (Access denied message)
runas /user:computershutdown "cmd /K shutdown -m computer (access denied)
runas /user:shutdown "cmd /K shutdown -m computer (access denied)
From Linux box:
net rpc shutdown -I computer -U user%password (says shutdown succeeded) rpcclient -I x.x.x.x -c shutdown -U user (gives usage message)
there are many telnet sessions with same login. somebody is always broadcasting message how to know the ipaddress of that machine.
View 1 Replies View RelatedI have a task I need to enable root telnet on SLES 11.I know about security hole, it is a must requirement accordingly to executing some scripts.Telnet works for the other user , but not for rootSSH work properly.Added pts/0 .. pts/24 to the /etc/securetty
View 5 Replies View Relateda user called, cannot login - forgot the password - common case ( 200 user system )- but this one seems to be a bit different:
user tries to log in via ssh - login/passwd incorrect,
via telnet - no problem
tried a few different users on ssh - no problem... It seems the access denied applies to just a single, standard user account - only via ssh, all other users are able to login... tried also to change the passwd, no difference. beside re-creating the account, can you think about anything else? system: RHEL AS3, 2.4.21-51ELsmp
not able to Login as a root in my fedora 11 machine , but I can login with other user.when I login with as a root user the error occurred "user authentication failed ". After login with user account when I open Terminal and try to login with same username = root and Password= admin then I can login .
View 3 Replies View RelatedI would like to make a telnet connection to one server. I can't do this at first beceause i necesary to connect to another server. I use the program putty and this is the command to connect to my first machine:
[Code]....
How to eneble telnet in linux based os?
I'd tried this command:
telnet my pc ip & name
every time I try to connect to the ftp server I setup i am recieving this error Response:*** buffer overflow detected ***: /usr/sbin/vsftpd terminated Error:Could not connect to server
View 1 Replies View RelatedI accidentally did a 'chmod +x foo' when i meant to do a 'chmod a+r foo'.
-rw-r--r-- 1 casper trad 53 Jul 17 22:41 filegore
-rw-r--r-- 1 casper trad 13 Jul 17 22:41 filelemme
-rw-r--r-- 1 casper trad 24 Jul 17 22:41 nix
[code]....
I'm using something like telnet [URL] 25 and it comes back as not being able to connect to host on port 25. I don't have port 25 blocked anywhere. I turned off the firewall and even opened up port 25 on the hardware firewall router. If I ping it I can connect.
View 2 Replies View RelatedI setup my mail system on a clean install of Postfix and Dovecot from URl...on the:URL... part everything checks out yet when i input the details into Apple Mail it tells me That it Can't connect.I can Connect via Squirrelmail and telnet but not through mail.also my /var/log/mail.log s not recording anything and my mail.log.1 only goes up to april 6
View 2 Replies View RelatedI have a customer who is complaining that they can connect to prt y on IP x with telnet. They are seeing the following:
telnet x.x.x.x y
Trying x.x.x.x...
Connected to x.x.x.x.
Escape character is '^]'.
after some time the connection of course times out. Connection closed by foreign host. There is no telnet service running on this port so they cannot do anything, but they are complaining tht the fact that telnet "connects" is a security risk. I am having difficulty explaining why they are able to connect with telnet. I know it has to do with the socket layer API in Linux but I am having difficulty explaining this sufficiently. I also can't just say "this is the way linux works" to them. I am looking through "UNIX Network Programming" by W.
I am facing an error when I run the following command telnet localhost 7777
Trying ::1...
telnet: connect to address ::1: Connection refused
Trying 127.0.0.1...
telnet: connect to address 127.0.0.1: Connection refused
I want to create script wherein it will check the application if its running. The command that I'll be using to check the application is telnet (if you can recommend others, that's ok). I've an application and it is listening to port 1808. If I do telnet localhost 1808, the response is :
Code:
[root@test ~]# telnet localhost 1808
Trying 127.0.0.1...
telnet: connect to address 127.0.0.1: Connection refused
What I want to happen is if the response is like to code above, it will execute a commands. Obviously, above code knows that the application is not working so I need to execute a commands. I created a script before using expect but I don't think it will work because I haven't establish a shell yet unlike successful telnet I could spawn expect.
I installed samba and samba-client (sudo yum install samba samba-client) but I still cannot connect to this Windows machine.I installed samba, started the samba services (although that may only by necessary to connect into Fedora?), and even restarted the computer and I still cannot do this, I have been googling like crazy and only se articles on how to make Fedora a samba server...
View 3 Replies View Related