pve5to6 fails with "Unsupported SSH Cipher configured for root in /root/.ssh/config: 3des"

ropiecin

Member
May 7, 2015
9
0
21
trying to upgrade from version 5. 4-2 to 6, using pve5to6 script fail returning error: "Unsupported SSH Cipher configured for root in /root/.ssh/config: 3des"

cat /root/.ssh/config
Ciphers blowfish-cbc,aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc

thanks in advance for help
 

fabian

Proxmox Staff Member
Staff member
Jan 7, 2016
7,691
1,450
164
remove the file (to use the built-in default of openssh) or replace it with more modern ciphers
 
  • Like
Reactions: linkstat

sg90

Active Member
Sep 21, 2018
284
42
33
32
Hallo @fabian
i had the same error and only removed the last part ,3des-cbc
then i had a problem with arcfour

so you mean to remove the hole file ?

have a nice day
vinc

No not the file just the cipher list line so it will use defaults, or also remove arcfour

The issue is due to them being removed in Debian10
 

About

The Proxmox community has been around for many years and offers help and support for Proxmox VE, Proxmox Backup Server, and Proxmox Mail Gateway.
We think our community is one of the best thanks to people like you!

Get your subscription!

The Proxmox team works very hard to make sure you are running the best software and getting stable updates and security enhancements, as well as quick enterprise support. Tens of thousands of happy customers have a Proxmox subscription. Get your own in 60 seconds.

Buy now!