OpenSSH Windows 7 and Windows 8

Secure SHell (SSH) is the most popular remote management application that’s both available to enterprise and end users. By default, the daemon listens on port 22. You can change it to listen on an unprivileged port, but port 22 is the default. But did you know how that came to be?

Tatu Ylonen, the guy who wrote the protocol, told the story in a very short blog post. The story, er.. blog post begins…

I wrote the initial version of SSH in Spring 1995. It was a time when telnet and FTP were widely used.

Anyway, I designed SSH to replace both telnet (port 23) and ftp (port 21). Port 22 was free. It was conveniently between the ports for telnet and ftp. I figured having that port number might be one of those small things that would give some aura of credibility. But how could I get that port number? I had never allocated one, but I knew somebody who had allocated a port.

The basic process for port allocation was fairly simple at that time. Internet was smaller and we were in very early stages of the Internet boom. Port numbers were allocated by IANA (Internet Assigned Numbers Authority). At the time, that meant an esteemed Internet pioneer called Jon Postel and Joyce K. Reynolds. Among other things, Jon had been the editor of such minor protocol standards as IP (RFC 791), ICMP (RFC 792), and TCP (RFC 793). Some of you may have heard of them.

To me Jon felt outright scary, having authored all the main Internet RFCs!

Anyway, just before announcing ssh-1.0 in July 1995, I sent this e-mail to IANA: Continue reading

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155 Responses

  1. Hi, I have installed kali successfully but my problem am unable to boot kali. It says “Oh no! Something has gone wrong. A problem has occurred and the system can’t recover. Please contact admin”.. what should I do? Thanks

  2. i have also download linux latest iso file and make booteble using power iso then process installation , i have done finish installation without any error , then login page not show display .
    please help me what I do and how.

  3. Hi. I have downloaded the 64 bit version of the Kali Linux ISO image and stored it in a flashdrive and set it as priority when booting. I get an error saying ‘BOOTMGR is missing Press Ctrl + Alt + Del to restart’. I know it should’ve booted to the installation menu when I run it but unfortunately that’s not the case. Please help.

  4. I know this thread is a little old, but I’m trying to dual boot kali and win 7, I don’t have a flash drive or a disk drive, so I’m using WinISO to mount the iso file and I’m obviously running into the issue of not having the files during installation. Is there a work around for this?

  5. I am using a dual boot system, after installing the Kali linux, i was able to use it well that i could access my hard disk which are in three partitions and could access then all. on the third boot on kali linux, i access my file and this is what appears:
    Error mounting /dev/sda6 at /media/root/LIMIT: Command-line `mount -t “ntfs” -o “uhelper=udisks2,nodev,nosuid,uid=0,gid=0,dmask=0077,fmask=0177” “/dev/sda6” “/media/root/LIMIT”‘ exited with non-zero exit status 14: The disk contains an unclean file system (0, 0).
    Metadata kept in Windows cache, refused to mount.
    Failed to mount ‘/dev/sda6’: Operation not permitted
    The NTFS partition is in an unsafe state. Please resume and shutdown
    Windows fully (no hibernation or fast restarting), or mount the volume
    read-only with the ‘ro’ mount option.

    what should i do help me.

    1. As the message indicates, that can be caused when windows was in hibernate or suspend state, or when faststarting is enabled before you booted into Linux. So log back into Windows, shut it down correctly and make sure that fastboot is disabled (I think that’s in the BIOS).

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