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I was trying to setup a ssh connection to my pi 2 (model B, i.e., no inbuilt wifi) in headless mode from my ubuntu machine. I do not have a router. After multiple attempts of flashing and tweaking, the following worked,

  1. Add ssh file in /boot
  2. Uncommenting the following lines in /etc/dhcpcd.conf 
profile static_eth0
static ip_address=192.168.1.23/24
static routers=192.168.1.1
static domain_name_servers=192.168.1.1

interface eth0
fallback static_eth0

After this it asks for

pi@192.168.1.23's password:

to which i supplied the default password for rpi

raspberry

but it keeps saying Permission denied, please try again.for three times after which it closes the connection. I tried this and this, but it would not work. Note that I do not have a windows machine or a hdmi-in enabled screen. I don't remember having this problem in earlier versions of raspbian. I am using 2018-11-13-raspbian-stretch-full.img.

REVOLUTION
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  • @Milliways I connected my rpi to my laptop via an ethernet cable after adding the empty ssh file in /boot/. However, I was not able to establish a ssh connection via the command $ssh pi@raspberrypi as it would say Could not resolve hostname raspberrypi: Name or service not known. After making a static IP in /etc/dhcpcd.conf I was able to connect but now I think I am not getting access to the default user, hence it's not accepting the default password. – REVOLUTION Jan 10 '19 at 09:08
  • You do not put ssh in /boot but into the boot partition. You should use raspberrypi.local in most OS. See How to set up networking/WiFi – Milliways Jan 10 '19 at 09:13
  • @Milliways sorry, my bad. I put ssh into the boot partition only after flashing the image file. And I tried both $ssh pi@raspberrypi and $ssh pi@raspberrypi.local. Since this problem did not occur before when I used this with windows + putty, I assumed it has something to do with the DHCP connection on my laptop hence I gave it a static IP. I dont know much about DHCP hence I avoid it :p – REVOLUTION Jan 10 '19 at 09:20
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    try running ssh -vvv as this will give more verbose output which help work out why permission is denied. You can disable passwords in sshd_config. – fcbsd Jan 10 '19 at 09:45
  • @Milliways I reflashed the os added the file and restarted my computer. It worked with $ssh pi@raspberrypi.local and it started working fine with it. I think the problem was with my ubuntu machine dhcp earlier. Thanks! – REVOLUTION Jan 10 '19 at 11:54
  • Does the ssh file get deleted from the first partition? I think I'm right in saying that after the SSH service has been started it should delete the file: the ssh file is a one-time option and is not persistent. I also see to remember reading somewhere recently that it only works on a fresh install as well, try re-writing the card and add your ssh and wpa-supplicant.conf to it before booting. – Roger Jones Jan 10 '19 at 17:12
  • Please make your comment that it worked now an answer. This will finish your question and show other users that it has a solution. – Ingo Jan 10 '19 at 22:30

2 Answers2

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When I did,

$ssh pi@192.168.1.23

after making my IP static, pi gave the following,

pi@192.168.1.23's password:

Which was misleading, as no user 192.168.1.23 exists. Hence it kept showing Permission Denied. It would ask passwords for this user, even when I had disabled passwords.

Finally, after restarting my computer and re-flashing the OS on the SD card, I was able to get it working without static IP. And the standard command worked,

$ssh pi@raspberrypi.local

I figured that DHCP must have been misbehaving on my computer as I kept switching my ethernet port from RPI to LAN. After restarting it must have got reset.

REVOLUTION
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No more default pi user with raspberry password.

https://www.raspberrypi.com/news/raspberry-pi-bullseye-update-april-2022/

Ashot Matevosyan
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