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Author Topic: Rigol DS1054z network (LAN) related bugs/issues  (Read 2469 times)

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Offline sequoia

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Rigol DS1054z network (LAN) related bugs/issues
« on: September 27, 2015, 04:22:31 PM »
 I just got new Rigol, and noticed network related issues with it. Are these known issues or is this possibly bad unit (otherwise unit seems to work perfectly, though)? 

1) If trying to access the web interface of the unit (http://x.x.x.x/), web interface and other ports stop responding. Sometimes I get the status page only partially (and network side is frozen) and sometimes it loads ok, but freeze happens when trying to re-load it or access any other pages. Interesting thing is that unit stops completely responding on all (TCP) ports when this happens. Only ping works after the freeze. Only restarting the scope seems to make it recover. However, the network stack "crash" doesn't seem to affect operation of the scope itself.

Accessing port 5555 seems to work fine (doesn't trigger this issue)....

2) DHCP client is very buggy. I observed unit requesting a IP/lease normally when its powered on, but it keeps then renewing the lease every 2-3 minutes, completely ignoring the actual lease time (in my case 24hours or 86400 seconds). Sane behaviour would be to wait at least about half the lease time before checking again with the DHCP server...


I have the latest firmware 00.04.03.SP1 (aka 00.04.03.01.05)


« Last Edit: September 27, 2015, 04:25:22 PM by sequoia »
 

Offline cs.dk

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Re: Rigol DS1054z network (LAN) related bugs/issues
« Reply #1 on: September 27, 2015, 05:04:36 PM »
I have just tested - Mine is doing exactly the same. Freezes up, when trying to access other pages, etc.  The scope UI is responsive though.
 

Offline Karel

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Re: Rigol DS1054z network (LAN) related bugs/issues
« Reply #2 on: September 27, 2015, 06:45:42 PM »
Yep, same here.

Fortunately, the webinterface is useless anyway so nobody cares...

The difference between theory and practice is less in theory than
the difference between theory and practice in practice.
Expensive tools cannot compensate for lack of experience.
 

Offline sequoia

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Re: Rigol DS1054z network (LAN) related bugs/issues
« Reply #3 on: September 27, 2015, 08:39:48 PM »
I guess the "good" news is that this seems like firmware bug and not that my new scope has hardware issue.

But, this points to pretty much non-existent QA process at Rigol if this kind of issues get through to released firmware.

At minimum this is a DoS vulnerability, but on the other hand it might indicate buffer overflow in the unit that might allow clever exploit to be used to gain "root" access to the device...


Another note, there seems to be lot of ports open on these things (and even ancient Portmap/RPCbind service):
Code: [Select]
PORT     STATE SERVICE
80/tcp   open  http
111/tcp  open  rpcbind
617/tcp  open  sco-dtmgr
618/tcp  open  dei-icda
619/tcp  open  compaq-evm
5555/tcp open  freeciv
5566/tcp open  westec-connect
6666/tcp open  irc

Port 80 being the web interface and port 5555 being the "SCPI" command interface. Still lot of (undocumented?) ports open...
« Last Edit: September 27, 2015, 08:41:26 PM by sequoia »
 

Offline rosbuitre

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Re: Rigol DS1054z network (LAN) related bugs/issues
« Reply #4 on: September 27, 2015, 09:09:25 PM »
Yes, the same problem in mine  :-//

Regards
My instruments: DMM Keysight 34461A / Tektronix DMM916 / Fluke 12, Rigol DS1074Z, Deer DE-5000, Siglent SDG805 / SDP3303D, Dayton Dats2
 

Offline CustomEngineerer

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Re: Rigol DS1054z network (LAN) related bugs/issues
« Reply #5 on: September 27, 2015, 10:35:08 PM »
But, this points to pretty much non-existent QA process at Rigol if this kind of issues get through to released firmware.

There are several 30+ page threads on this site that can attest to their level of QA. Granted they do seem to listen and at least try to fix some of the issues, but they tend not to release change logs with the new firmwares, so you can't always be sure what they fixed and what they didn't. Also new undocumented features/bugs show up in them sometimes. You get what you pay for...
 

Offline Karel

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Re: Rigol DS1054z network (LAN) related bugs/issues
« Reply #6 on: September 27, 2015, 11:18:48 PM »
Another note, there seems to be lot of ports open on these things (and even ancient Portmap/RPCbind service):

Don't worry, it's very unlikely that somebody will write an exploit for Rigol scopes.
99.99% of the exploits are written for one and the same OS from redmond (which is not used in Rigol scopes).

Anyway, you should never connect T&M instruments to a normal lan. Only to a lan that can not be accessed by other computers and is not connected to the internet.
Or use it only with computers that are not using an os from redmond.


The difference between theory and practice is less in theory than
the difference between theory and practice in practice.
Expensive tools cannot compensate for lack of experience.
 


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