[PVE-User] Proxmox disable TLS 1

Uwe Sauter uwe.sauter.de at gmail.com
Thu Jul 26 11:23:18 CEST 2018


Am 26.07.2018 um 11:22 schrieb Thomas Lamprecht:
> Hi,
> 
> Am 07/26/2018 um 11:05 AM schrieb Brent Clark:
>> Good day Guys
>>
>> I did a sslscan on my proxmox host, and I got the following:
>>
>> snippet:
>> Preferred TLSv1.0  256 bits  ECDHE-RSA-AES256-SHA          Curve P-256 DHE 256
>> Accepted  TLSv1.0  256 bits  DHE-RSA-AES256-SHA            DHE 2048 bits
>> Accepted  TLSv1.0  256 bits  DHE-RSA-CAMELLIA256-SHA       DHE 2048 bits
>> Accepted  TLSv1.0  256 bits  AES256-SHA
>> Accepted  TLSv1.0  256 bits  CAMELLIA256-SHA
>> Accepted  TLSv1.0  128 bits  ECDHE-RSA-AES128-SHA          Curve P-256 DHE 256
>> Accepted  TLSv1.0  128 bits  DHE-RSA-AES128-SHA            DHE 2048 bits
>> Accepted  TLSv1.0  128 bits  DHE-RSA-SEED-SHA              DHE 2048 bits
>> Accepted  TLSv1.0  128 bits  DHE-RSA-CAMELLIA128-SHA       DHE 2048 bits
>> Accepted  TLSv1.0  128 bits  AES128-SHA
>> Accepted  TLSv1.0  128 bits  SEED-SHA
>> Accepted  TLSv1.0  128 bits  CAMELLIA128-SHA
>>
>> I need to remove / disable TLSv1.0. Google has not been able to be of much help, for I get suggestions to edit
>> /usr/bin/pveproxy and /etc/default/pveproxy and the list goes on.
>>
>> Can someone suggest how to fix this issue.
> 
> Ah yes, I posted a possible quick solution for this in the forum a bit
> ago [0].
> 
> Edit /etc/default/pveproxy to have a line with:
> 
> CIPHERS="HIGH:!TLSv1:!SSLv3:!aNULL:!MD5"

Or you are a bit more selective:

CIPHERS="ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256"



> 
> then
> systemctl restart pveproxy
> 
> and you should be good to go :-)
> 
> cheers,
> Thomas
> 
> [0]: https://forum.proxmox.com/threads/disabling-tls-1-0-and-1-1-in-proxmox.35814/#post-175643
> 
> 
> 
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