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• PDAnet on Android IP on PC is not public IP. Where does the NAT take place, PDAnet or Verizon?

  - by lcbrevard

  When using PDAnet on a PC (Win7 ultimate) to USB tether a Motorola Droid on Verizon 3G the IP address of the PC appears to be public - 64.245.171.115 (64-245-171-115.pools.spcsdns.net) - but connections show as coming from another public IP - 97.14.69.212 (212-sub-97.14.69.myvzw.com). Someone is performing Network Address Translation - either PDAnet or within the Verizon 3G network. Can someone tell me who is doing the NAT? Is it PDAnet or is it at Verizon? Is there any possibility of setting up port forwarding, such that connections to the public IP 97.14.69.212 (212-sub-97.14.69.myvzw.com) are forward to the PC? We are testing a network protocol that requires either a true public IP or forwarding a range of ports from the public Internet to the system on which the software runs (actually Linux hosted by VMware Player or Workstation on a PC running Windows).

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• PDAnet on Android IP on PC is not public IP. Where does the NAT take place, PDAnet or Verizon?

  - by lcbrevard

  When using PDAnet on a PC (Win7 ultimate) to USB tether a Motorola Droid on Verizon 3G the IP address of the PC appears to be public - 64.245.171.115 (64-245-171-115.pools.spcsdns.net) - but connections show as coming from another public IP - 97.14.69.212 (212-sub-97.14.69.myvzw.com). Someone is performing Network Address Translation - either PDAnet or within the Verizon 3G network. Can someone tell me who is doing the NAT? Is it PDAnet or is it at Verizon? Is there any possibility of setting up port forwarding, such that connections to the public IP 97.14.69.212 (212-sub-97.14.69.myvzw.com) are forward to the PC? We are testing a network protocol that requires either a true public IP or forwarding a range of ports from the public Internet to the system on which the software runs (actually Linux hosted by VMware Player or Workstation on a PC running Windows).

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• Why does HP Update at remote system trigger RDP printing at local system?

  - by lcbrevard

  This is obscure. When connected with RDP to another system that has HP Update installed on it, either directly running the HP Update or having the notification pop up to ask if you want to run HP Update causes the local system to try to print something to peculiarly-chosen-local-printer. Case 1: Desktop Win 7 Ult system RDP connected to HP Laptop Win 7 Ult system. When HP Update runs on the laptop a dialog for XPS Writer Save As... appears on Desktop system. Even if you put in a name, nothing gets generated and the dialog repeats. And repeats. Until you (a) close the RDP connection and (b) clean out the queued entries. If the HP Update pops up the request to run the update and you are not at the desk when this happens, there can be dozens of queued requests for this bogus printing. NOTE: the XPS Writer is not selected as a default printer on either system. Case 2: (Different) HP Laptop Win 7 Ult system RDP connected to XP Pro "brand X" desktop system but with HP printer drivers installed. If the request to run HP Update notification pops on the XP system, dozens of attempts to print, in this case to a Versa Check Printer driver, are queued. Dismissing the HP request, closing RDP, and cleaning out the queue are required to stop this. NOTE: the Versa Check Writer is not selected as a default printer on either system. THE QUESTION: What the heck is going on here? Some kind of scripting or COM activity that is misdirected?

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• What router hardware or software should be used when multiple public IPs are routed into the same LAN?

  - by lcbrevard

  I am looking for recommendations to replace a set of consumer grade (Linksys, Netgear, Belkin) routers with something that can handle more traffic while routing more than one static public IP into the same LAN address space. We have a block of static public IPs, 5 usable, with Comcast Business. Currently four of them are in use for: General office access Web server Mail and DNS servers Download and backup web server for separate business All systems (a mixture of physical and virtual) are in the same LAN address space (10.x.y.0/24) to enable easy access between them inside the office. There are 30 or more systems in use depending on which virtual machines are currently active. We have a mixture of Windows, Linux, FreeBSD, and Solaris. Currently a separate consumer grade router is used for each of the four static addresses, with its WAN address set to the specific static address and a different gateway address for each: uses 10.x.y.1 - various ports are forwarded to various LAN IPs on systems with gateway 10.x.y.1 uses 10.x.y.254 - port 80 is forwarded to a server with gateway 10.x.y.254 uses 10.x.y.253 - ports for mail and dns are forwarded to a server with gateway 10.x.y.253 uses 10.x.y.252 - ports as needed are forwarded to server with gateway 10.x.y.252 Only router 1. is allowed to serve DHCP and address reservation based on the MAC is used for most of the internal "server" IP addresses so they are at fixed values. [Some are set static due to limitations in the address reservation capabilities of router 1.] And, yes, this really does work! But... I am looking for: better DHCP with more capable address reservation higher capacity so I don't have to periodically power cycle the routers One obvious improvement would be to have a real DHCP server and not use a consumer grade router for that purpose. I am torn between buying a "professional" router such as Cisco or Juniper or Sonic Wall verus learning to configure some spare hardware to perform this function. The price goes up extremely rapidly with capabilities for commercial routers! Worse, some routers require licensing based on the number of clients - a disaster in our environment with so many virtual machines. Sorry for such a long posting but I am getting tired of having to power cycle routers and deal with shifting IP addresses afterwards!

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• How can I fix a date that changes by 4 years and 1 day when pasted between Excel workbooks

  - by lcbrevard

  In Excel dates are represented internally by a floating point number where the integer part is the number of days since "some date" and the fractional part is how far into that day (hence the time). You can see this if you change the format of a date - like 4/10/2009 to a number 39905. But when pasting a date between two different workbooks the date shifts by 4 years and one day!!! In other words "some date" is different between the two workbooks. In one workbook the number 0.0 represents 1/0/1900 and in the other 0.0 represents 1/1/1904. Where is this set and is it controllable? Or does this represent a corrupted file? These workbooks where originally from Excel 2000 but have been worked on now in Excel 2007 and Excel 2003. I can demonstrate the problem between the two workbook files in both 2003 and 2010. The exact history of when they were created or what versions of Excel have been used on each is unknown.

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• On Ubuntu get: "-bash: ./flume No such file or directory" BUT flume is there and executable. Same binary OK on RHEL

  - by lcbrevard

  This is already posted in serverfault - and may be more apprpriate there. Reworked a bit from the orginal posting. We have a product built on CentOS 4 32-bit Linux that runs unmodified on 32- and 64-bit CentOS/RHEL 4 and 5 and SLES 10. It also runs unmodified on SLES 9 64-bit. [SLES 9 32-bit requires a different libstdc++.] The name of the main binary executable is 'flume' Yesterday we tried to put this on 64-bit Ubuntu 10 and, even though the file is there and the right size, we get: -bash: ./flume: No such file or directory 'file flume' shows it to be a 32-bit ELF (can't remember the exact output and the system is on an isolated network) If put into /usr/local/bin, then 'which flume' returns: /usr/local/bin/flume The file is marked as executable (did 'chmod +x flume') and lsattr shows no problems with attribute bits. I was not able to try 'ldd flume' yet. I have also not tried 'strace flume'. Currently I am with an air conditioning failure. [It's been that kind of week!] I now suspect that some library is not there. This is a profoundly unhelpful message and one I have never seen before. Is this peculiar to Ubuntu or perhaps just to this installation. We gave up and moved to a RHEL 4 system and everything is fine. But I sure would like to know what causes this.

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• How many connections are allowed to a Windows 7 Home Premium shared folder or printer?

  - by lcbrevard

  I have a client who runs a small business with 4 desktop systems, two of which are inexpensive [ The XP Pro system is currently being used as a file "server" for time sheets and QuickBooks data. It also shares an HP ink jet printer. The client wishes to decommission this system because (1) it's ugly [it is] and (2) it uses too much power [it does]. If we share a folder on one of the Windows 7 Home Premium systems will there be a problem connecting to it with up to 3 other computers? What about the printer sharing? I vaguely remember seeing that Windows 7 is less usable for "server" purposes and has severe restrictions on the number of clients. But I cannot seem to find those numbers. In my own network (over 12 systems) we have no problem sharing from Windows 7 Ultimate to a few other systems where needed. I am embarrassed that I cannot seem to find the answer to this in a couple of days of searching. I can do an anytime upgrade of one of these systems to Pro if that would improve the ability to share from it. I am not able to convince the client to put a "real server" into their network.

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• How many connections are allowed to a Windows 7 Home Premium shared folder or printer?

  - by lcbrevard

  I have a client who runs a small business with 4 desktop systems, two of which are inexpensive [ The XP Pro system is currently being used as a file "server" for time sheets and QuickBooks data. It also shares an HP ink jet printer. The client wishes to decommission this system because (1) it's ugly [it is] and (2) it uses too much power [it does]. If we share a folder on one of the Windows 7 Home Premium systems will there be a problem connecting to it with up to 3 other computers? What about the printer sharing? I vaguely remember seeing that Windows 7 is less usable for "server" purposes and has severe restrictions on the number of clients. But I cannot seem to find those numbers. In my own network (over 12 systems) we have no problem sharing from Windows 7 Ultimate to a few other systems where needed. I am embarrassed that I cannot seem to find the answer to this in a couple of days of searching. I can do an anytime upgrade of one of these systems to Pro if that would improve the ability to share from it. I am not able to convince the client to put a "real server" into their network.

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