[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x

SSH / Telnet Software

Telnet is an application layer protocol used on the Internet or local area networks to provide a bidirectional interactive text-oriented communication facility using a virtual terminal connection. SSH was designed as a replacement for Telnet and for unsecured remote shell protocols. The term telnet is also used to refer to the software that implements the client part of the protocol. SSH provides a secure channel over an unsecured network in a client-server architecture, connecting an SSH client application with an SSH server.

Share tech news, updates, or what's on your mind.

Sign up to Post

Hi Experts,
can someone explain the procedure for generating certificates.

I am new to this I want to Generating private key for SFTP connection, i have a file that has a *.asc extension and i want to generate to private key and send it to third party.

Thank you,
0
HTML5 and CSS3 Fundamentals
LVL 12
HTML5 and CSS3 Fundamentals

Build a website from the ground up by first learning the fundamentals of HTML5 and CSS3, the two popular programming languages used to present content online. HTML deals with fonts, colors, graphics, and hyperlinks, while CSS describes how HTML elements are to be displayed.

I have several linux systems. Normally I login on them with my account, and after I login i execute sudo -s, so I can get admin privileges.
Sometimes I need to edit some files or copy some files out of the linux systems and in the past I ofter used the winscp program.
Unfortunately when I login with winscp with my account I don't have admin privileges, and thus I am not able to open and edit needed files, I am not able to copy files out of the system. Can you tell me how to login with winscp with admin privileges
0
My company has setup an Ubuntu 18.04 server, to exchange files with a client, via SFTP.  We need a high level of security.  We're trying to require authentication with SSH key pairs, AND the Linux OS username and password (not the SSH passphrase). We've got the key pairs working, but it doesn't ask for the password. I'm assuming we're just missing something in the sshd_config file. Hopefully we're not trying to do something that's not possible. Any assistance would be much appreciated.

Thanks!
Mark
0
Hi, when I finished installing OpenSSH, I got the following warning:

Permissions 0640 for '/etc/ssh/ssh_host_ecdsa_key' are too open.

Could you please give me the command line to safely change and set the proper permissions for this folder and its files?

Server: Red Hat Enterprise Linux Server 7.5

Thanks

Jorge Batres
0
I am running a Centos 7 linux server, i am runnin open ssh server, and client. I did a recent test to see if the ssh is working correctly, and what i found out was i could only using my internal IP address to access my server from my workstation. I tried to use the public static ip and i get a timed out error. I checked my ports 21,22,  to make sure they are open through port forwarding through my wireless router. They check out to be open, I am using firewalld as a firewall, and i  did notice that my selinux gave me an message basically asking me do i want the sshd server access to a particular file. I am not sure if selinux is the issue. But i want to find out if it is a permission problem, or  selinux issue. The actual sshd server when checked on staus shows it is running fine. Please help
error2.PNG
0
I removed the public SSH key from a server I was managing. THen I generated a new key and overwrote the old one on my laptop. THen I added the key to the server. it added two keys.

I thought it would be best practice to remove the old key and put the new one in. It seems like my old key is still being added to the server. Am I overthinking this?

Does it really not matter and should you not bother with changing SSH keys? I was going to change them by the business quarter.
0
Hi guys

I'm trying to set up an SFTP server for our company to use. I have a Windows 2012 server and have started to go down the open ssh route etc.

Do you guys have any guides one could follow or recommendations you would make?

If people think Linux would be a better route, then I can go down that route too. I need something that will be stable and not lose/drop connectivity because of some sort of service that needs restarting all of the time etc.

And I have to do this within the next 3hrs:).


Thanks for helping
Yash
0
Would someone have an explanation for this?

Both times I have run this script.

vmkfstools -i "/vmfs/volumes/Date-2016/00 - DNS Server/00 - DNS Server.vmdk" -d thin "/vmfs/volumes/DES Lessons/00-DNS-Serve
r/00 - DNS Server.vmdk"

Open in new window


It gets to around 45%, and then jumps to 100%


Destination disk format: VMFS thin-provisioned
Cloning disk '/vmfs/volumes/Date-2016/00 - DNS Server/00 - DNS Server.vmdk'...
Clone: 100% done.

However, the actual size is 50GB
But the file transferred is only 16GB


00 - DNS Server.vmdk
16.53 GB
Sunday, May 20, 2018, 12:48:59 -0400

This is the actual size


00 - DNS Server.vmdk
50 GB
Saturday, April 28, 2018, 08:23:53 -0400

I have 7 VMs that need to be moved to a new drive, and this is causing some major slowing down issues.
Any ideas?

Also, if using the vmkfstools GUI is a better route to go, that would complete this without this issue.
Then please, tell me how to use the GUI, as I cannot find any information on using it.

Carrzkiss
0
Hello All;

I have a 1TB drive of which has 11 VMs on it.
Taking up about 95% of the space.
I purchased some 500GB driver, I am in the process of moving the VMs over.

What I have done.
#1:
Using the datastore, I chose the VMs and I "Moved" them.
It is going to take a few days to move the ones I selected over, about 426GB.

#2: I tried the OpenSSH
Just to move one of the VMs over that is 60GB, will take over 24-hours.

Code for the SSH

[root@localhost:/vmfs/volumes/5b005dd5-2ce20e85-e704-001517fcd2e8] scp -r "00 - DNS Server" root@192.168.2.101:/vmfs/volumes/Date-2016/"00\\-\\DNS\\Server"

Open in new window


How can I make this go faster?
It is only going from one drive to another drive, on the same server.

Thanks
Carrzkiss
0
I have a Dell laptop (running Windows 10) where I'm hosting OpenSuSE Linux (Leap 42.3) in a virtual machine. Although I can ping the virtual machine, I haven't been able to connect to it using the SSH protocol. As far as I can tell, the secure shell demon is running on the Linux system. I've tried a couple of SSH Windows clients – specifically, SecureCRT and SecureFX. Additionally, I've tried running the SSH client from the Windows command prompt. I haven't seen any error messages. Instead, the connection simply times out.

Networking is not my forte, but I'm familiar with SSH. I've configured it on UNIX systems many times, but that was years ago. These days I'm doing so only on rare occasions. Consequently, there's usually some small detail that I overlook. Any assistance would be greatly appreciated!
0
Build an E-Commerce Site with Angular 5
LVL 12
Build an E-Commerce Site with Angular 5

Learn how to build an E-Commerce site with Angular 5, a JavaScript framework used by developers to build web, desktop, and mobile applications.

Unable to access FTP server using local account created.  Ftp server is 2003 and not using IIS, but OpenSSH.
User seems to have all the permissions needed to access through WinSCP, but I keep getting the access denied message when attempting to connect.
I'm not sure whether or not I did not add this user somewhere with permissions, whereas I am not an avid FTP server administrator.
Any help would be appreciated.
0
how can I ssh to a linux box and copy the key to the destination in one command

someone showed me this once it is l or ssh-L or somelike that
0
how to use Haproxy to publish an internal SFTP server.
0
i have sftp install in ubuntu 16.04 hwo to disabled user to has a ssh login. user has only sftp login not ssh login.
0
We have a partner that has a MySQL / Maria DB Master server.  We have a slave and want to replicate against their master.  Some want to use the builtin SSL replication and others want to tunnel via SSH.  Can anyone provide some recommendations or pros and cons of each.  Any security, maintenance issues to consider?  Also, I assume that since we would be replicating against their master, they would have to run with the ssh port listening, not our slave?  Thanks
0
Hey I am changing my SSH key.

How do I remove my old SSH key from my servers trusted keys.
0
Have a new 3650 configured from scratch, I'm trying to get ssh/radius authentication setup.  I went through a guide to setup on switch, I have several others that are working so i know the server is setup correctly, but when i try to use it on the switch, SSh works, and i can log in with local creds, but AD creds don't work. Thinking I'm missing something.  was hoping someone could take a look over my config and see if anything stands out.. Thanks
3650_scrub.txt
0
i install ssh in ubuntu. i start services and it's  runnig. idisabled firewall. i add keygen in authorized_keys.
ssh <ip_host> says  Permission denied (publickey).
0
Hi There,

I had connected to Ubuntu machine in windows through putty's ssh client assume the IP address is

55.170.23.156

I want to clone bit bucket inside this putty

assume the bit bucket url

is http://bitbucket.librariesdsw.net:8080/

assume bit bucket user name is bharath and password is welcome

how to clone this bitbucket inside this putty

please help,  thanks in advance

Kind regards,

Bharath K
0
OWASP: Avoiding Hacker Tricks
LVL 12
OWASP: Avoiding Hacker Tricks

Learn to build secure applications from the mindset of the hacker and avoid being exploited.

I'm trying to follow this guide in order to setup an SSH tunnel for VNC onto an ubuntu desktop from a Windows desktop.

I can connect via SSH but the moment I start the VNC connection to localhost::5902 I immediately get the following message:

"Connection has been gracefully closed".

Any ideas what could be causing this? Is it a bad setting on the Ubuntu computer I'm trying to VNC into? Did I configure PuTTY or TightVNC wrong? Is it because I changed the default SSH port number? Is there something I need to do on my router other than port forward the ssh connection appropriately (which I already did)? Is there an alternate method you would suggest?

Ubuntu 16.04 LTS & Windows 10, both 64 bit.
0
I am not familiar with Linux but have configured a Linux appliance. The box is configured and I can log into it via console. I never use putty and tried to SSH into but get the following below. I know am able to authenticate via console, but not SSH. I was wondering if I need to enable something to allow remote access.  If so, what commands must I put in to enable it? Please advise.

2017-12-13_8-17-22.png
2017-12-13_8-20-44.png
2017-12-13_8-21-27.png
0
I have 1000+ of these - and it appears the parent process for each I have checked is the same command... not sure what is going on... any ideas?


8012     32605  0.0  0.0 110016  1264 ?        S    01:21   0:00 /bin/csh test -d /usr/lib64/qt-3.3
8012     32610  0.0  0.0 110016  1268 ?        S    01:22   0:00 /bin/csh test -d /usr/lib64/qt-3.3
8012     32611  0.0  0.0 110016  1268 ?        S    01:21   0:00 /bin/csh test -d /usr/lib64/qt-3.3
8012     32617  0.0  0.0 110016  1272 ?        S    01:21   0:00 /bin/csh test -d /usr/lib64/qt-3.3
8012     32618  0.0  0.0 110016  1264 ?        S    01:22   0:00 /bin/csh test -d /usr/lib64/qt-3.3
8012     32623  0.0  0.0 110016  1268 ?        S    01:21   0:00 /bin/csh test -d /usr/lib64/qt-3.3
8012     32625  0.0  0.0 110016  1268 ?        S    01:22   0:00 /bin/csh test -d /usr/lib64/qt-3.3
8012     32629  0.0  0.0 110016  1268 ?        S    01:21   0:00 /bin/csh test -d /usr/lib64/qt-3.3
8012     32632  0.0  0.0 110016  1268 ?        S    01:22   0:00 /bin/csh test -d /usr/lib64/qt-3.3
8012     32635  0.0  0.0 110016  1268 ?        S    01:21   0:00 /bin/csh test -d /usr/lib64/qt-3.3
8012     32639  0.0  0.0 110016  1272 ?        S    01:22   0:00 /bin/csh test -d /usr/lib64/qt-3.3
8012     32641  0.0  0.0 110016  1268 ?        S    01:21   0:00 /bin/csh test -d /usr/lib64/qt-3.3
8012     32646  0.0  0.0 110016  1272 ?        S    01:22   0:00 /bin/csh test -d /usr/lib64/qt-3.3
8012     32647  0.0  0.0 110016  1268 ?     

Open in new window

0
Dear Experts,
I have spent so much time trying X11 forwarding but still no success. Can you help me with it?

I have the sudo privilege and my system is Ubuntu 17.10. I try the instruction like
http://laptops.eng.uci.edu/software-installation/using-linux/how-to-configure-xming-putty
But not work. here is my error

hsu@hcavfb11:~$ xclock
Error: Can't open display:
hsu@hcavfb11:~$

Open in new window

0
We have an SFTP setup and have a client that wants to know what protocols/hashing algos/encryption we allow.  I found this info, I'm not sure if this is good... should any of these be disabled?  Any insight would be helpful.

Thanks!

[root@clientsftp ~]# ssh -Q cipher
3des-cbc
blowfish-cbc
cast128-cbc
arcfour
arcfour128
arcfour256
aes128-cbc
aes192-cbc
aes256-cbc
rijndael-cbc@lysator.liu.se
aes128-ctr
aes192-ctr
aes256-ctr
aes128-gcm@openssh.com
aes256-gcm@openssh.com
chacha20-poly1305@openssh.com
[root@clientsftp ~]# ssh -Q mac
hmac-sha1
hmac-sha1-96
hmac-sha2-256
hmac-sha2-512
hmac-md5
hmac-md5-96
hmac-ripemd160
hmac-ripemd160@openssh.com
umac-64@openssh.com
umac-128@openssh.com
hmac-sha1-etm@openssh.com
hmac-sha1-96-etm@openssh.com
hmac-sha2-256-etm@openssh.com
hmac-sha2-512-etm@openssh.com
hmac-md5-etm@openssh.com
hmac-md5-96-etm@openssh.com
hmac-ripemd160-etm@openssh.com
umac-64-etm@openssh.com
umac-128-etm@openssh.com
[root@clientsftp ~]# ssh -Q kex
diffie-hellman-group1-sha1
diffie-hellman-group14-sha1
diffie-hellman-group14-sha256
diffie-hellman-group16-sha512
diffie-hellman-group18-sha512
diffie-hellman-group-exchange-sha1
diffie-hellman-group-exchange-sha256
ecdh-sha2-nistp256
ecdh-sha2-nistp384
ecdh-sha2-nistp521
curve25519-sha256
curve25519-sha256@libssh.org
gss-gex-sha1-
gss-group1-sha1-
gss-group14-sha1-

Open in new window

0
How can I tell if SSH and cypto key is enabled on cisco when I do show run ?
0

SSH / Telnet Software

Telnet is an application layer protocol used on the Internet or local area networks to provide a bidirectional interactive text-oriented communication facility using a virtual terminal connection. SSH was designed as a replacement for Telnet and for unsecured remote shell protocols. The term telnet is also used to refer to the software that implements the client part of the protocol. SSH provides a secure channel over an unsecured network in a client-server architecture, connecting an SSH client application with an SSH server.

Top Experts In
SSH / Telnet Software
<
Monthly
>