(semi-urgent) RVS4000 and multiple (same port) NAT'ing

Hello -
I have a client who has one Internet connection and 2 different internal SMTP servers. Is there a way to NAT public mail/SMTP to each one? We have two public IPs.
Thanks

Hello Jeff,
Unfortunately the RVS4000 does not support One to One NAT. This restricts the router to only being able to use one of the IP addresses you have.
If you are intrested in a router that supports this feature, I recommend one of the following:
RV042
RV120W
RV220W

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Urgent: Tuxedo and multiple Resource Managers

Hello,
I have a tuxedo service which updates Oracle tables and also updates
queues of MQ-Series. Is it possible for this Tuxedo service to
control the commit and rollback for both Oracle and MQ-Series??
Will tpbegin, tpcommit and tpabort control the commit and rollback
of both Oracle and MQ-Series?? If yes, do I have to build the tuxedo
service in the following manner:
buildserver -r Oracle_XA -r MQSeries_XA_RMI -f ...
What else do I need to do to make sure the transaction covers both
Oracle and MQ-Series in the tuxedo service???
Thanks a lot in advance.. Please do let me know any information
regarding this.. I would highly appreciate any help in this regards...
Vipul

Hello Vipul,
Resource Managers are assigned at Tuxedo Server Group level using
OPENINFO and all Tuxedo Servers belonging to a group can access
only this Resource Manager.
So we can have only one resource manager connection from a Tuxedo
server.
But there is an exception to this rule:
You can have more than one RM connections provided u don't want
the XA features (Global Transactions). U can connect to one RM
using XA (tpopen) and rest of the RMs using native interface or
non-XA interface (EXEC SQL CONNECT....). But here, u will be able
to do Global Transaction only using XA connections. Non-XA connections
do not participate in Global Transactions and hence cannot be rolled
back incase of failure...
Now, coming back to ur requirement:
1. Create a Tuxedo Server Group for RM Oracle
2. Create another Tuxedo Server Group for RM MQ-Series
3. Build a Tuxedo server for RM Oracle operations and put into
group using RM Oracle. (use -r Oracle for buildserver)
4. Build another Tuxedo server for RM MQ-Series operations and
put into group using RM MQ-Series. (use -r MQ-Series for buildserver)
5. Now create a service that calls Services from these Tuxedo servers
in a Global Transaction. (this can be built without -r RMNAME incase
it does not interact with RM directly)
HTH
regards
MS
"Vipul" <[email protected]> wrote:
>
Hello,
I have a tuxedo service which updates Oracle tables and
also updates
queues of MQ-Series. Is it possible for this Tuxedo service
to
control the commit and rollback for both Oracle and MQ-Series??
Will tpbegin, tpcommit and tpabort control the commit
and rollback
of both Oracle and MQ-Series?? If yes, do I have to build
the tuxedo
service in the following manner:
buildserver -r Oracle_XA -r MQSeries_XA_RMI -f ...
What else do I need to do to make sure the transaction
covers both
Oracle and MQ-Series in the tuxedo service???
Thanks a lot in advance.. Please do let me know any information
regarding this.. I would highly appreciate any help in
this regards...
Vipul

Allow Multiple Computers Access To The Same Port

I just received my AEBS in the mail this afternoon & set it up in no time. My college house has two Xbox 360s connected to the AEBS & I would like to open the NAT ports on both. I'm able to successfully forward the ports to allow an open NAT for one Xbox, but the Airport utility doesn't allow me to open the same ports for the other Xbox.
Is there a way to open a port to everyone connected to the router, or maybe a way to open a specific port used by multiple Private IP Addresses?

Sorry, but no. Port mapping forwards inbound a single, or range, of ports (in one definition) to one single machine only. So, for example, you could not map port 25 to multiple email servers on your LAN. However, you could map port 25 (for email) and port 80 (for web) to a single device.

How do I open the same ports on an Airport Extreme Base Station for multiple computers at the same time?

As the title suggests...
I have a mix of five Mac and PC's at home using an Airport Extreme Base Station as the router.   I need many ports opened on the AEBS for all of the computers- not just one computer. (for example: three people want to play TF2 on Steam at the same time; each machine needs the correct ports open on the router).   Port forwarding only allows me to forward a given port to a single IP, yet I need that port open for five differnt IP's, all at the same time.
How do I do that on an AEBS?
In the same way, I have a small office of four iMacs using an old airport with the same exact issue.   I would like to be able to connect to all of them remotely with Apple Remote Desktop, but the port forwarding on the airport only allows a port to forward to a single IP.   I want to be able to tunnel into the office network and log onto any machine behind the Airport extreme... not just a single IP.    I currently have it set up where I can tunnel into the office from my house, I can find the one machine that the port forwarding has been assigned to, I can log on and everything is just fine... with one machine.    How do I open the firewall for the other machines?
TL,DR version: How do you open ports on an Airport Extreme Base Station instead of forwarding ports?   Forwarding ports doesn't work for multiple IP's.

You can open a single or multiple ports to a single device or different ports to different devices, but you cannot open the same port to multiple devices via the AirPort Utility for the Apple routers.

Static NAT to two servers using same port

I have a small office network with a single public IP address. Currently we have a static nat for port 443 for the VPN. We just received new software that requires the server the software is on to be listening on port 443 across the internet. Thus, essentially I need to do natting (port forwarding) using port 443 to two different servers.
I believe that the usual way to accomplish this would be to have the second natting use a different public facing port, natted to 443 on the inside of the network (like using port 80 and 8080 for http). But, if the software company says that it must use port 443, is there any other way to go about this? If, for example, I know the IP address that the remote server will be connecting to our local server on, is there any way to add the source IP address into the rule? Could it work like, any port 443 traffic also from x.x.x.x, forward to local machine 192.168.0.2. Forward all other port 443 traffic not from x.x.x.x to 192.168.0.3.
Any help would be very much appreciated.
Thanks,
- Mike

Hi,
Using the same public/mapped port on software levels 8.2 and below would be impossible. Only one rule could apply. I think the Cisco FWSM accepts the second command while the ASA to my understanding simply rejects the second "static" statement with ERROR messages.
On the software levels 8.3 and above you have a chance to build a rule for the same public/mapped port WHEN you know where the connections to the other overlapping public/mapped port is coming from. This usually is not the case for public services but in your situation I gather you know the source address where connections to this server are going to come from?
I have not used this in production and would not wish to do so. I have only done a simple test in the past for a CSC user. I tested mapping port TCP/5900 for VNC twice while defining the source addresses the connections would be coming from in the "nat" configuration (8.4 software) and it seemed to work. I am not all that certain is this a stable solution. I would imagine it could not be recomended for a production environment setup.
But nevertheless its a possibility.
So you would need the newer software on your firewall but I am not sure what devce you are using and what software its using.
- Jouni

Is it possible to use both an ILB and an ELB (listening on the same port) in the same Azure cloud service?

I'm building a test Lync deployment on Azure; yes, I know this is not supported, hence "test".
Lync Front-End servers expose two set of web services, one for internal users and one for external ones; they listen on different ports (443 and 4443) on the same servers; when external services are published, you need a reverse proxy or a port forwarding
in order to map port 443 of a public IP address to port 4443 of the Front-End server(s). When you have multiple Front-End servers in a pool, you also need to load-balance them.
So, a typical Lync deployment looks like this:
       Internal users
               |
               443
                  |
          Internal LB
        192.168.0.20
        443         443
          |               |
   Lync FE 1     Lync FE 2
192.168.0.21 192.168.0.22
          |               |
      4443        4443
          External LB
       Public IP Address
                 |
              443
                 |
       External Users
This should be easily replicated in Azure, as it supports both external load balancing and internal load balancing. They are even supported together in the same cloud service, so this configuration should be easy. However, it looks like "should"
is the keyword here.
After creating the external load balanced endpoint (which listens on external port 443 and forwards to port 4443 on the servers), I'm trying to create an internal load balancer and add internal endpoints to is; however, while the ILB can be created successfully,
adding an internal endpoint listening on port 443 and forwarding to port 443 on the servers fails miserably, with an error stating that port 443 is already in use by another endpoint:
Update-AzureVM : BadRequest : Port 443 is already in use by one of the endpoints in this deployment. Ensure that the port numbers are unique across endpoints within a deployment.
For reference, my commands are:
Add-AzureInternalLoadBalancer -InternalLoadBalancerName "LyncILB" -ServiceName "LyncFrontEnd" -SubnetName "LabSubnet" -StaticVNetIPAddress 192.168.0.20
(This completes successfully)
Get-AzureVM LYNCFE1 | Add-AzureEndpoint -Name "Https-Int" -Protocol "tcp" -LocalPort 443 -PublicPort 443 -LBSetName "HttpsIntLB" -DefaultProbe -InternalLoadBalancerName "LyncILB"
(This fails)
The existing external endpoint is configured as such:
Get-AzureVM LYNCFE1 | get-azureendpoint
LBSetName : HttpsExtLB
LocalPort : 4443
Name : HTTPS-Ext
Port : 443
Protocol : tcp
Vip :
ProbePath :
ProbePort : 4443
ProbeProtocol : tcp
ProbeIntervalInSeconds : 15
ProbeTimeoutInSeconds : 31
EnableDirectServerReturn : False
Acl : {}
InternalLoadBalancerName :
IdleTimeoutInMinutes :
LoadBalancerDistribution :
The error doesn't even make a lot of sense; the external load balancer listens on a public IP address, while the internal load balancer listens on a private IP address in the internal network; there
shouldn't be any conflict here... however it looks like there is one instead.
Why doesn't this work? Am I doing something wrong, or is Azure networking just being silly as usual again?

Hello Massimo Pascucci,
The issue that you are facing when creating an endpoint with internal loadbalancer is the limitation of not allowing same ports to be listening under a single cloud service. This reason for this is that there is a limitation of only one private IP (Also
known as the Internal load balanced IP) per cloud service.
There is also a limitation on the Internal load balancer more than one port to be published per load balancer:
You can leave your feedback by following the link below:
https://social.msdn.microsoft.com/Forums/en-US/1805c5a0-3906-4cd6-8561-9802d77e0ae5/is-it-possible-to-use-both-an-ilb-and-an-elb-listening-on-the-same-port-in-the-same-azure-cloud?forum=WAVirtualMachinesVirtualNetwork
Refer to this article for more information on Internal load balancer:
http://azure.microsoft.com/blog/2014/05/20/internal-load-balancing/
Thanks,
Syed Irfan Hussain

How to set up NAT for two servers using same port with ASDM ASA 5505

Hi there,
We have a new installation of a ASA 5505 and are trying to get some NAT issues straightened out. Here is the scenario: On our internal network, we have two servers running Filemaker Server, a relational database server that clients connect with using port 5003. Our goal is to be able to allow users from the outside to access either of these servers as needed. I know how to set up a simple static NAT rule and matching Access rule in ASDM which would be fine for a case in which only one server using a given port is running on a network, but for simple static rules I seem to be blocked from entering a different translated port number from the orginal port number, which becomes a problem when two servers we need to access from the outside are running software using the same port number.
What is the simplest way to address this need? I am guessing that I need to set up a scenario like this, where port 5004 (or any arbitrarily choosen unused port, can be used to access the second server:
Outside user enters FQDN:5004 and this translates to Database server # 1 as 192.168.1.40:5003
and
Outside user enters FQDN:5003 and this translates to Database server # 1 as 192.168.1.38:5003
If so, what is the easist way to get this done? Or is there a better what to handle this scenario?
Thanks in advance,
James

I would create two objects and use object NAT
object network Obj_5004
host 192.168.1.40
object network Obj_5004
nat (inside,outside) static service tcp 5003 5004
object network Obj_5003
host 192.168.1.38
object network Obj_5003
nat (inside,outside) static service tcp 5003 5003
Of course you will need to open your outside interface for tcp ports 5003 and 5004 to make this happen

Mulitple controllers and multiple tracks at the same time

I have multiple keyboard controllers and rack modules. I would like to have each of them individually control their own midi tracks(connected to external rack modules) at the same time, so I can record live performances. Right now I create a track set the port and channel and I can play the desired external module one track at a time, but the second I try to use more than one controller they all play the same module.
I come from Pro Tools.... and in that program for each channel I am able to select an input port/channel and an output port/channel and it works fine, but in logic I can't seem to select an Input port/channel for the individual tracks, they all seem to be the same. Where or how would I do this so I can streamline my setup?

http://discussions.apple.com/thread.jspa?messageID=8065879&#8065879
Eddie

How to forward the same ports for multiple IPs?

Hi all, I just bought a Linksys WRT54GS router and I would like to forward the same set of ports for two different computers on my network (192.168.1.101 and 192.168.1.3) however when I try to, I get a "Port Overlap" error. Is there another way I can do this? I am trying to set up Age of Empires II. Thanks for any help!

No. You cannot forward the same port to two different computers (or IP addresses).
Here's the reason why:
You and your friend are both playing the game online. You score 1000 points. Your friend scores 10 points. The signal to increase your score 1000 points arrives on port 3078. Which computer is the router supposed to send this signal to? Both computers?   No way!
Most online games have a way to assign different ports to different computers. For example, you might use ports 3075 thru 3078, while your friend uses ports 3175 thru 3178. If your game is setup this way, it should work.
Also, you will want to forward ports to a fixed LAN IP address. In your WRT54GS, note that any fixed LAN IP address must be outside the DHCP server range, and it cannot end in 0, 1, or 255.   So the 192.168.1.101 address is probably an illegal fixed LAN IP address.
Here are all the Linksys rules for using fixed LAN IP addresses:
With Linksys routers, a fixed (static) LAN IP addresses must be assigned in the device that is using the address. So you need to enter the fixed address in the computer or printer, not in the router.
When using a Linksys router, any fixed LAN IP address must be outside the DHCP server range (typically 192.168.1.100 thru 192.168.1.149), and it cannot end in 0, 1, or 255.
Therefore any fixed LAN IP address would normally need to be in the range of
192.168.1.2 thru 192.168.1.99 or
192.168.1.150 thru 192.168.1.254
assuming you are still using the default DHCP server range.
Also, in the computer, when you set up a static LAN IP address, you would need to set the "Subnet mask" to 255.255.255.0 and the "Default Gateway" to 192.168.1.1 and "DNS server" to 192.168.1.1
It is also important that no two devices on your network be set to the same static LAN IP address.
Typically, when I setup gamers, I put thier fixed addresses all together at 192.168.1.21 , 192.168.1.22, etc.   But you can use any legal fixed addresses that you want.

I have two macs at my house, and multiple iPhones. I want to keep the same apple id as everyone else, but i want to put my own music only on my iPhone. I want to do this with my laptop which is not the family's main iTune's computer.

I have two macs at my house, and multiple iPhones. I want to keep the same apple id as everyone else, but i want to put my own music only on my iPhone. I want to do this with my laptop which is not the family's main iTune's computer.

If you use the same Apple ID for iCloud on each device, yes. However, you can use the same Apple ID for iTunes content on each device, but different Apple ID's for iCloud, iMessage, FaceTime, etc., on each device. That way, you can have whatever iTunes content you want on each phone, but keep all of the other data separate. You can create another Apple ID here:
https://appleid.apple.com/cgi-bin/WebObjects/MyAppleId.woa/wa/createAppleId?loca lang=en_US
Must be a verified email address.

How to send to multiple people using same port?

I am trying to have one person send TWO audio sources to 10 others using same port- lets say 12345. I get "Can't open local data port:" error. The first audio is fine since I just use .addTarget(). Is there a way i can do the same for the 2nd audio source still using the same port? thanks!

As far as I know, you should transmit using even-numbered ports, eg. 22222 and 22224.
I think a port numbered 22223 and 22225 are opened respectively to handle control information.
Could be wrong, but try it anyway!
StHogan

Broadcast and point to point server in the same port

I'm trying to set up a system where I can send point to point messages via sockets to certain ips, send broadcast messages to every pc in the network, and also be able to listen for point to point messages and broadcast messages, all in the same port. I've been able to establish a point to point connection using the Socket class to send the message, and using the ServerSocket class to listen for messages, but I can't seem to get broadcasting to work.
I read somewhere that for broadcasting one should use the DatagramSocket class. The problem is i'm not sure which ip i'm supposed to specify when I send the message. Also, do I need a special listener to listen for broadcast messages, or will the ServerSocket listener work for that?
This is what I have for the broadcasting part:
String msg = myId;
DatagramSocket sendSocket;
sendSocket = new DatagramSocket(Constants.COM_PORT); // 4567
InetAddress group = InetAddress.getByName(Constants.BROADCAST_ADDR); // "192.168.1.1"
DatagramPacket dp = new DatagramPacket(msg.getBytes(), msg.getBytes().length, group, Constants.COM_PORT);
sendSocket.send(dp);
sendSocket.close();
Thanks in advance
Diego

It worth mentioning that UDP/broadcast and robust do go together easily.
- UDP does not guarantee delivery. i.e. messages can be dropped and you won't be told. Lost packets are not retransmitted either.
- UDP can fragment packets if larger than 532 bytes long.
- UDP packets can arrive out of order (though I have never seen this myself)
If your receiver is under load/busy it can miss many packets if its buffers overflow.

I've bought an USB-to-ethernet-adapter and a minidisplay-port-to-VGA-adapter. But I can't use them at same time. At first, I plugged those two adapters and only the USB-to-ethernet worked. Tried restarting the mac then only VGA adapter worked.

I've bought an USB-to-ethernet-adapter and a minidisplay-port-to-VGA-adapter. But I can't use them at the same time. At first, I plugged those two adapters and only the USB-to-ethernet worked. I tried restarting the mac then only the VGA-adapter worked. I also tried to reinstall the OS.
I'm using new 13-inch MacBook Air early 2015. OS X 10.10.3.

Thanks Malcolm - Do you think it might be worth trying to flash the firmware on these cases - there seem to be updaters available on Prolific's website. Obviously I'd have to do it on a PC. I've emailed Prolific asking them about my problem. No reply as yet, and I'm not holding my breath! Do you know if there are any other posts on these boards relating to Prolific? Stupid question really - I'll just do a search...
Thanks again for your post. Cheers from Bonnie Scotland.

ABAP and Java HTTP Port same - PI 7.1 EHP1

Hi,
I have installed PI 7.1 EHP1 system.
I realize that both ABAP and Java HTTP Ports are same.
Is there any official note reg this or any info from SAP on the change.
icm/server_port_0 = PROT=HTTP,PORT=51500,TIMEOUT=60,PROCTIMEOUT=600
icm/HTTP/j2ee_0 = PREFIX=/,HOST=localhost,CONN=0-500,PORT=5$$00
Thanks,
Tanuj

Hi,
>>I realize that both ABAP and Java HTTP Ports are same.
the changed happened in 7.1 already as far as I remember
but I don't think it's documented anywhere except maybe the installation guide
Regards,
Michal Krawczyk

I have to send messages through UDP multicast and unicast from same port. In Labview I tried that it throws error. I heard it is possible by means of Datagram (UDP unicast and multicast) Port Sharing. How can it be achieved in Labview?

I have to send UDP multicast and Unicast messages to a remote port from a single source/local port. I tried by opening UDP unicast and multicast in the same port and got the expected error. I tried by opening a unicast connection and sending unicast messages.After that when multicast messages has to send I closed unicast and opened multicast in the same port.This is not throwing any error. But my requirenment is to comminicate with another application in C ++ which recieves this data, throwing an error of lost connectivity and both the applications are not abled to communicate properly.
In the other application with C++ this is implemented using port sharing. So how port sharing can be implemented in labview so that I can send both multicast and unicast messages from the same port?
Thanks in advance

UDP is a sessionless protocol, meaning that anyone listening on the specified port CAN receive the data. CAN because as you noted there is no guarantee in the protocol that it will be received. And if you send the data not to a specific address but a multicast address not only one computer can receive it but in fact every computer on the same subnet listening to that multicast address and depending on the TTL of the packet also computers in neighbouring subnets, although that last one is not a very reliable operation since routers can be configured to drop multicast packages anyhow despite of a different TTL saying otherwise.
Accordingly there is no real way to make sure that a receiving UDP port is not already in use, since you don't build up a connection. UDP is more or less analogous to shouting your messages through a megaphone, and anyone listening on the right frequency (port) can hear it. You do bind the sender socket to a specific port number but that makes little difference.
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions

(semi-urgent) RVS4000 and multiple (same port) NAT'ing

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