Tru Huynh wrote:
On Fri, Feb 10, 2017 at 12:26:14PM +0100, Patrick Begou wrote:
Hello
I have more and more troubles using firefox in professional
environment with CentOS6. The latest version is 45.7.0 But I can't
use it anymore to access some old server hardware (IDRAC7 of DELL
C6100) because of "/SSL_ERROR_WEAK_SERVER_CERT_KEY/". I had to
install an old Firefox32 version to administrate these servers.
Can you try: (in Firefox's about:config):
possible workaround for SSL_ERROR_WEAK_SERVER_CERT_KEY
security.ssl3.dhe_rsa_aes_128_sha
security.ssl3.dhe_rsa_aes_256_sha
These are yet set to true.
Today I upgrade the firmware of 2 DELL switch and now Firefox cannot
connect to them anymore saying:
/An error occurred during a connection to xxx.xxx.xxx.xxx. The
server rejected the handshake because the client downgraded to a
lower TLS version than the server supports//
//SSL_ERROR_INAPPROPRIATE_FALLBACK_ALERT
possible workaround for SSL_ERROR_INAPPROPRIATE_FALLBACK_ALERT
security.tls.version.max 3 -> 1
You might want to revert for safer browsing, after.
With this setting I get SSL_ERROR_NO_CYPHER_OVERLAP and I cannot connect to the
switch.
Of course I can re-activate the old firmware version of the switch, but it has a
bug I would like to solve too.....
I know that to remains compatible with old config could have security problems
but all of these devices
use dedicated ports (IDRAC, Out of band port management) on a private network
which could be easily isolated.
The idea is to have a browser dedicated to this administration (instead of
several versions/profiles)
/Is there a CentOS6 recommended web browser allowing continuous
connections to olds and new base level (and local) system
administration services ?
maybe different profiles with differents security setup?
Cheers
Tru
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Thanks all for your suggestion to find a solution or detailing your local work
around....
Patrick
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