[Xymon] PSclient sending from intranet

Kris Springer kspringer at innovateteam.com
Thu Nov 8 20:03:34 CET 2018


Thanks for the info.  I check the cipher/protocols on the 2008 box and 
they're all the defaults.  I've enabled the latest that match what my 
Xymon server is configured with and now I'm just waiting until after 
hours to reboot my box and hope it connects.

Here's what I use.
https://www.nartac.com/Products/IISCrypto/

Kris Springer


On 11/8/18 11:20 AM, Timothy Williams wrote:
> https://support.microsoft.com/en-us/help/4019276/update-to-add-support-for-tls-1-1-and-tls-1-2-in-windows 
> has instructions to make sure TLS is enabled in Windows. You may have 
> to check Apache settings to see what ciphers and/or protocols are 
> enabled on that end.
>
> */Timothy L. Williams/*
>
> *Operating Systems Analyst*
> Virginia Commonwealth University Computer Center
> 900 East Main St. STE 1141 Richmond VA 23219
> *804-828-0556 <tel:(804)%20828-0556>*
>
> *
> *
>
>
>
>
> On Thu, Nov 8, 2018 at 12:54 PM Kris Springer 
> <kspringer at innovateteam.com <mailto:kspringer at innovateteam.com>> wrote:
>
>     It's confirmed working great on Windows Server 2012, but not
>     2008.  Can you point me in a direction to look for a solution to
>     the cipher issues?  I'm not going to reduce things to port 80, I
>     want to keep things on 443.
>
>     Kris Springer
>
>
>     On 11/8/18 10:23 AM, Timothy Williams wrote:
>>     The red flag that popped out at me was the 2008 R2. Have you
>>     checked the ciphers and protocols? Try port 80 HTTP and see if it
>>     works.
>>
>>
>>
>>     On Thu, Nov 8, 2018 at 12:13 PM Kris Springer
>>     <kspringer at innovateteam.com <mailto:kspringer at innovateteam.com>>
>>     wrote:
>>
>>         I may have spoken too soon.  It's indeed working on box1, but
>>         when I edited the xymonclient_config.xml on box2 and
>>         re-entered the password so box2 would re-encrypt it for it's
>>         connection to the server, it's timing out.  Does each client
>>         need it's own individual user/pass? That seems unnecessary. 
>>         I just tried different credentials and it still timed out. 
>>         The difference between box1 and box2 is the OS.  They're on
>>         the same network and can both reach the server via https so I
>>         don't think it's a networking issue.
>>         box1 = Windows 10 Pro
>>         box2 = Windows Server 2008 R2 Enterprise
>>
>>         Apache logs show nothing unusual.
>>         I've looked at all the logs I can find on the server but I'm
>>         not seeing anything that would tip me off as to the issue.
>>         Ideas?
>>
>>         Kris Springer
>>
>>
>>         On 11/8/18 2:25 AM, Beck, Zak wrote:
>>>
>>>         Hi Kris
>>>
>>>         Yes, I have it working. As you say, the URL needs to include
>>>         the full path to xymoncgimsg.cgi.
>>>
>>>         All xymoncgimsg.cgi does as far as I can tell is relay the
>>>         message(s) received over HTTPS via TCP to localhost port
>>>         1984 (which is what the man page says as well). So you need
>>>         that listening (which by default it will be).
>>>
>>>         I don’t recall making any other config changes to make this
>>>         work (aside from Apache etc to sort out the authentication).
>>>
>>>         I suspect the time out is waiting for the response – when
>>>         you submit data to Xymon, you normally get the client local
>>>         config back from the server. This comes back via the HTTPS
>>>         response. There is a timeout setting – sorry I forgot to
>>>         document it in the table in the Word doc –
>>>         serverHttpTimeoutMs – which defaults to 100000 milliseconds
>>>         – i.e. 100 seconds. This is the time it waits for the
>>>         response from the server. 100 seconds is pretty generous
>>>         unless you’re traversing particularly slow VPNs or saturated
>>>         connections. You can override this in the
>>>         xymonclient_config.xml file.
>>>
>>>         I’m assuming you’re getting this message:
>>>
>>>             "  Connecting to $($url), body length $($body.Length),
>>>         timeout $($script:XymonSettings.serverHttpTimeoutMs)ms"
>>>
>>>         And then this one (with a timeout exception):
>>>
>>>                 "  Exception connecting to $($url):`n$($_)"
>>>
>>>         And not either of these:
>>>
>>>                 "  FAILED, HTTP response code:
>>>         $($response.StatusCode) ($statusCode)"
>>>
>>>         or
>>>
>>>                 "  Received $($output.Length) bytes from server"
>>>
>>>         Zak
>>>
>>>         *From:*Xymon <xymon-bounces at xymon.com>
>>>         <mailto:xymon-bounces at xymon.com> *On Behalf Of
>>>         *kspringer at innovateteam.com <mailto:kspringer at innovateteam.com>
>>>         *Sent:* Thursday, 8 November 2018 08:51
>>>         *To:* Xymon MailingList <xymon at xymon.com>
>>>         <mailto:xymon at xymon.com>
>>>         *Subject:* [External] Re: [Xymon] PSclient sending from intranet
>>>
>>>         Anyone have xymoncgimsg.cgi functioning on their server and
>>>         successfully receiving PSclient data over HTTPS?  The
>>>         documentation for this is vague and doesn't specify how to
>>>         make it work. Any specifics would be greatly appreciated.
>>>
>>>         Thanks,
>>>         Kris Springer
>>>
>>>
>>>         -----Original Message-----
>>>         From: Timothy Williams <tlwilliams4 at vcu.edu
>>>         <mailto:tlwilliams4 at vcu.edu>>
>>>         To: kspringer at innovateteam.com
>>>         <mailto:kspringer at innovateteam.com>
>>>         Cc: xymon at xymon.com <mailto:xymon at xymon.com>
>>>         Sent: Tue, 06 Nov 2018 2:22 PM
>>>         Subject: Re: [Xymon] PSclient sending from intranet
>>>
>>>         Alas, I am unable to help further, as my InfoSec allows port
>>>         1984, and not 80 or 443 to Xymon, so I don't have http running.
>>>
>>>         Tim
>>>
>>>         On Tue, Nov 6, 2018 at 3:29 PM Kris Springer
>>>         <kspringer at innovateteam.com
>>>         <mailto:kspringer at innovateteam.com>> wrote:
>>>
>>>             I've configured one of my PSclients to test this HTTPS
>>>             functionality, and it indeed does try to send data over
>>>             port 443.  But the client logs say that my Xymon server
>>>             is timing out.  Is there a specific server url path that
>>>             I need to be using?  The documentation doesn't give any
>>>             example.
>>>
>>>
>>>             Kris Springer
>>>
>>>               
>>>
>>>               
>>>
>>>             On 11/6/18 7:54 AM, Timothy Williams wrote:
>>>
>>>                 The Powershell client can connect to the Xymon
>>>                 server using TCP port 1984 as default, but can also
>>>                 connect using HTTP or HTTPS with/without
>>>                 user/password. You likely have port 80 or 443 open.
>>>                 Here are Word doc details:
>>>
>>>                 HTTP is an alternate method. It can be used if you
>>>                 have xymoncgimsg.cgi running on the web server on
>>>                 your Xymon server – see
>>>                 https://www.xymon.com/help/manpages/man8/xymoncgimsg.cgi.8.html
>>>                 <https://urldefense.proofpoint.com/v2/url?u=https-3A__www.xymon.com_help_manpages_man8_xymoncgimsg.cgi.8.html&d=DwMGaQ&c=eIGjsITfXP_y-DLLX0uEHXJvU8nOHrUK8IrwNKOtkVU&r=S-aLwpx-PHBTBMIG_c2JczRC0SfuZCmsiH9Iams25FI&m=-OwMT0n637myRsiGrh2Ey_FyOjBckX9cnzeXB9ID_dw&s=nwg-TdqZw8dbasxkybIMrt8HKpuV-U4Z2HpC5Rbr1BM&e=>.
>>>                 The web server running the CGI can be configured for
>>>                 SSL (i.e. HTTPS) and / or authentication –
>>>                 XymonPSClient supports basic authentication and SSL.
>>>                 If you require authentication, the
>>>                 <serverHttpUsername> and <serverHttpPassword>
>>>                 elements should be configured.
>>>
>>>                 If you are using HTTP and transmitting over unsecure
>>>                 networks (e.g. the internet), it is strongly
>>>                 recommended to enable SSL, authentication and
>>>                 disallow HTTP connections.
>>>
>>>                 ServerHttpPassword encryption
>>>
>>>                 If <serverHttpPassword> is set, the Xymon client
>>>                 will encrypt the password if it is not encrypted and
>>>                 remove the plain text password from the
>>>                 configuration file, overwriting with the encrypted
>>>                 password. The Xymon client will prefix the encrypted
>>>                 password with ‘{SecureString}’, so it is easy to
>>>                 tell if the client has attempted to encrypt the
>>>                 password or not.
>>>
>>>                 This is done using the .NET SecureString functions,
>>>                 which means that the encryption is unique to the
>>>                 server and user. This means that once the password
>>>                 has been encrypted, you cannot use the same
>>>                 xymonclient_config.xml on another server. It also
>>>                 means that if you have been testing by running
>>>                 XymonPSClient from a command prompt, and this
>>>                 encrypts the password, when you run XymonPSClient as
>>>                 a service it will not be able to decrypt the
>>>                 password unless the service is running as the same user.
>>>
>>>                 In both scenarios, replacing the encrypted password
>>>                 with the plain text password and re-starting Xymon
>>>                 will cause the password to be re-encypted.
>>>
>>>                 Tim Williams
>>>
>>>                 On Tue, Nov 6, 2018 at 9:37 AM Rolf Schrittenlocher
>>>                 <schritte at ub.uni-frankfurt.de
>>>                 <mailto:schritte at ub.uni-frankfurt.de>> wrote:
>>>
>>>                     any possibility to send something from intranet
>>>                     to the world outside?
>>>                     creating webpage, send by sftp or scp? This
>>>                     could be done by cron and
>>>                     xymon could analyze this data then.
>>>                     > Anyone have an idea about how to collect
>>>                     client server stats using the
>>>                     > Powershell client on machines that are on an
>>>                     intranet that blocks port
>>>                     > 1984, and send it out to our external xymon
>>>                     server located in a
>>>                     > different part of the country?  The intranet
>>>                     network doesn't want to
>>>                     > open any additional ports to allow the traffic
>>>                     out.
>>>                     >
>>>
>>>                     -- 
>>>                     Mit freundlichen Grüßen
>>>                     Rolf Schrittenlocher
>>>
>>>                     Lokales Bibliothekssystem Frankfurt
>>>                     Bockenheimer Landstr. 134-138, 60325 Frankfurt
>>>                     Tel LBS: (49) 69 - 798 28830
>>>                     Tel persönlich: (49) 69 - 798 28908
>>>                     LBS: lbs at ub.uni-frankfurt.de
>>>                     <mailto:lbs at ub.uni-frankfurt.de>
>>>                     Persönlich: schritte at ub.uni-frankfurt.de
>>>                     <mailto:schritte at ub.uni-frankfurt.de>
>>>
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>>>
>>>
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>>
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