Actually I didn't need to do that; the HTTPS farm has '+MS RPC extensions
verbs' set under HTTP Verbs Accepted.
What I did was change the L4TXNAT farm to ports 6001,6002,6004 and
everything seems to be working fine.
Now I just need to sort out the http > https redirect (since users always
forget to type that) and another so if they go to webmail.domain.com it
redirects to webmail.domain.com/owa
On Sun, Dec 29, 2013 at 1:24 PM, Emilio Campos <
[email protected]> wrote:
> Dima is right. It is as simple as to change the HTTPS farm (443 Port) by
> a L4 farm or TCP farm. The issue is that the RPC verbs aren't supported by
> HTTPs farm.
>
> Regards
>
>
>
> 2013/12/29 Dima Polyakov <[email protected]>
>
>> There you go! You have few options why it did not work in your original
>> setup:
>>
>> - RPC uses ports (TCP or UDP) that are not forwarded (for
>> example according to http://support.microsoft.com/kb/325930 you need
>> port 139). I guess you can find out if you run a sniffer on your client to
>> see what ports it is trying to connect to.
>>
>> - RPC uses UDP, and you have opened only TCP
>>
>> - There is also ICMP (ping) that might be used somewhere in RPC
>> (doubt, but you can check it as well with a sniffer).
>>
>> By setting * - you just do NAT for everything that comes to that IP. By
>> specifying ports – you basically adding a firewall, do you really need it
>> on a load balancer? In my opinion load balancing should do only LB,
>> firewall should do a dedicated firewall/router like Cisco ASA:
>>
>> ---internet---firewall/router---zlb---servers
>>
>>
>>
>> Dima
>>
>>
>>
>> *From:* Damien Solodow [mailto:[email protected]]
>> *Sent:* Saturday, December 28, 2013 5:55 PM
>>
>> *To:* [email protected]
>> *Subject:* Re: [Zenloadbalancer-support] Issues with Exchange 2010 CAS
>>
>>
>>
>> Setting the port on the l4txnat farm to * and the NAT type to 'NAT' works.
>>
>> So what does that tell us about the issue? Or is it likely that the
>> answers would be in the iptables logs on the Zen box?
>>
>>
>>
>> On Fri, Dec 27, 2013 at 11:41 PM, Dima Polyakov <[email protected]>
>> wrote:
>>
>> hm.. can you leave port empty? Let’s redirect all traffic.
>>
>> You might also want to look at iptables log if packets get dropped there
>> (you will need to login into debian,
>> http://www.thegeekstuff.com/2012/08/iptables-log-packets/).
>>
>>
>>
>> Dima
>>
>>
>>
>>
>>
>> *From:* Damien Solodow [mailto:[email protected]]
>> *Sent:* Friday, December 27, 2013 11:13 PM
>>
>>
>> *To:* [email protected]
>> *Subject:* Re: [Zenloadbalancer-support] Issues with Exchange 2010 CAS
>>
>>
>>
>> I replaced the tcp farm for port 6001 with one using 'l4txnat' and port
>> 6001.
>>
>> The failure was the same.
>>
>>
>>
>> The F5 setup is different from Zen; F5 has an Exchange 2010 template that
>> configures the "farms" for it. The setup is pretty similar though.
>>
>>
>>
>> On Fri, Dec 27, 2013 at 10:46 PM, Dima Polyakov <[email protected]>
>> wrote:
>>
>> Can you make L4 farm as an experiment to see if it works with RPC? (if it
>> works then my initial guess is correct).
>>
>> Also, with what type of farm F5 load balancer is setup? Is it the same
>> configuration as ZLB?
>>
>>
>>
>> And just a wild guess, RPC library can make an initial ping before making
>> actual RPC. There is an utility from MS:
>> http://technet.microsoft.com/en-us/library/hh875578.aspx to do rpcping.
>>
>>
>>
>> Dima
>>
>>
>>
>>
>>
>> *From:* Damien Solodow [mailto:[email protected]]
>> *Sent:* Friday, December 27, 2013 9:36 PM
>> *To:* [email protected]
>> *Subject:* Re: [Zenloadbalancer-support] Issues with Exchange 2010 CAS
>>
>>
>>
>> Doubtful; I think "ping" in the results is a bit of a misnomer as it's
>> likely doing a tcping instead. :)
>>
>> Also I have a similarly configured Exchange array at another client using
>> an F5 load balancer and the "ping" from the Remote Connectivity Analyzer
>> succeeds.
>>
>>
>>
>> On Fri, Dec 27, 2013 at 9:30 PM, Dima Polyakov <[email protected]>
>> wrote:
>>
>> Could it be because ping is ICMP protocol and ZLB is configured for TCP
>> (telnet runs on TCP as well, that can explain why ping fails but telnet is
>> ok).
>>
>>
>>
>> Dima
>>
>>
>>
>>
>>
>> *From:* Damien Solodow [mailto:[email protected]]
>> *Sent:* Friday, December 27, 2013 9:22 PM
>> *To:* [email protected]
>> *Subject:* [Zenloadbalancer-support] Issues with Exchange 2010 CAS
>>
>>
>>
>> Running Zen 3.02 on VMware; 2 Exchange 2010 CAS servers in a CAS array.
>>
>> Zen was configured per the documentation linked on zenloadbalancer.org,
>> including setting static ports and SSL offload on Exchange.
>>
>> I also created farms for ports 6001, 6002, and 6004.
>>
>>
>>
>> Currently all the Exchange related farms only have one backend server
>> listed.
>>
>>
>>
>> Everything seems to work except for Outlook Anywhere.
>>
>>
>>
>> The Remote Connectivity Analyzer shows:
>>
>> Attempting to ping RPC endpoint 6001 (Exchange Information Store) on
>> server outlook.domain.com.
>>
>> The attempt to ping the endpoint failed.
>>
>>
>>
>> Additional Details
>>
>> An RPC error was thrown by the RPC Runtime process. Error 1818
>> CallCancelled
>>
>> Elapsed Time: 33191 ms.
>>
>>
>>
>> I know the error 1818 is a timeout; running a similar test internally
>> shows an error 1722 (RPC_Server_Unavailable).
>>
>>
>>
>> From an internal PC I can successfully telnet to 6001 using the Zen farm
>> IP.
>>
>>
>>
>>
>>
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