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Regarding the issue of ZD1200 TLS SSL

lanwei
New Contributor

My model is ZD1200
I have upgraded to version 10.5.1.0 duild 282
Have the following issues been resolved in this version
Question 1 "Disable FTP plaintext authentication"
Question 2: Disable SSLv2, SSLv3, and TLS 1.0. Enable TLS 1.2 "
Question 3 "Disable any weak KBC algorithm in TLS configuration"
What command should I use to check that these issues have been fixed?
Alternatively, you can provide me with an official explanation that these issues have been fixed since 10.5.1.0.

6 REPLIES 6

ms264556
Contributor III

Question 1:
https://support.ruckuswireless.com/documents/5698: "FTP will be disabled after upgrading to ZoneDirector 10.5.1.0.279, regardless of whether it was enabled or disabled prior to the upgrade"
You can check for yourself with e.g. nmap.

$ nmap -sV -p 21 192.168.0.2

PORT   STATE  SERVICE VERSION
21/tcp closed ftp

Question 2:
From the ZoneDirector CLI:-

ruckus> enable
ruckus# debug
ruckus(debug)# no support-tls 1.0-1.1
Are you sure you want to change whether support TLSv1.0 and TLSv1.1, If yes, it will reboot ZoneDirector.[Y/n]
ruckus(debug)#

After a reboot you will have only TLSv1.2.
You can check this yourself with e.g. nmap.

$ nmap --script ssl-enum-ciphers -p 443 192.168.0.2

PORT      STATE SERVICE
443/tcp   open  https
| ssl-enum-ciphers:
|   TLSv1.2:
|     ciphers:
|       TLS_RSA_WITH_AES_128_GCM_SHA256 (rsa 2048) - A
|       TLS_RSA_WITH_AES_128_CBC_SHA256 (rsa 2048) - A
|       TLS_RSA_WITH_AES_128_CBC_SHA (rsa 2048) - A
|       TLS_RSA_WITH_AES_256_GCM_SHA384 (rsa 2048) - A
|       TLS_RSA_WITH_AES_256_CBC_SHA256 (rsa 2048) - A
|       TLS_RSA_WITH_AES_256_CBC_SHA (rsa 2048) - A
|     compressors:
|       NULL
|     cipher preference: server
|     warnings:
|       Forward Secrecy not supported by any cipher
|_  least strength: A

(I don't show it, but you can also check ports 9998 and 11443 & see they also support only TLSv1.2).

Question 3:
You're out of luck here. You can see in the nmap output from Q2: "warnings: Forward Secrecy not supported by any cipher". This means it is impossible to disable weak KBC algorithms and still use the ZoneDirector.

tkank you 

I checked from the CLI that my firmware does not have TLS1.2, only 1.0 and 1.1, so I turned off 1.0. Can the problem be solved by only turning on 1.1 or above.

ruckus(debug)#show tls

TLs= Support Ts 1.0 and Ts 1.1

ruckus(debug)#no support-tls 1.0Are you sure you want to change whether support TLSv1.0,If yes, it will reboot &oneDirector.[Y/n]

ruckus (debug)#

 

thanks

Assuming you're on 10.5.1 then the syntax I gave you is correct & will result in TLSv1.2 being the only supported cipher

I use CLI, why can't I see that my firmware supports TLS 1.2 in show tls? Only 1.0 and 1.1.