Windows 7 Forums

Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.


Windows 7: Port exhaustion in Windows 7?

05 Feb 2014   #1
gavin2812

Windows 7 Professional x64
 
 
Port exhaustion in Windows 7?

Hi all,

I am having a problem with my Windows 7 Professional 64 bit install.

Occasionally, more so under heavy file transfer conditions, my PC has the following symptoms:

- DNS failure
- FTP server stops and displays '425 Can't open data connection.'

I don't think it's software specific as it seems to affect a number of applications running on the machine.

Rebooting the machine seems to fix the problems, but again, under heavy load (file transfers) it 'bombs out' and I have to reboot.

I have a fixed IP address to my DSL router (not using DHCP), not sure if this is relevant?

Not sure where to start with it really, I've run a few netstat commands but I cannot see that there are that many ports in use?

I'd appreciate any help on this and a pointer on where to start looking...

Thanks in advance


My System SpecsSystem Spec
.
05 Feb 2014   #2
TanyaC

Linux Mint 17 Cinnamon | Win 7 Ult x64
 
 

Hi,

it is unlikely that you will ever exhaust the ports available. There are 65536 of them. Ports below 1024 are reserved, as are some specific application ports. But there are 10's of thousands of ports available. Also, you can use multiple TCP and UDP connections per port.

This might be a router issue.

As a starting point, Have you tried rebooting the router? Or setting it back to factory defaults and reconfiguring it. It's also possible that you're overloading it.

For example, if you use torrents and you set your various configuration options to high values in attempts to maximize download speeds then you can reasonably expect your router to complain from time to time. Same can happen with http/ftp transfers.

Using a static IP address versus using a DHCP address should not make any difference.

If you have logs of the file transfers (cant tell you what/where because I don't know how you are doing the transfers), then posting relevant sections of that might help people to provide more assistance.

Tanya
My System SpecsSystem Spec
Reply

 Port exhaustion in Windows 7?




Thread Tools Search this Thread
Search this Thread:

Advanced Search




Similar help and support threads
Thread Forum
router not passing port scan after opening port
1. Is this a wired or wireless connection issue? wireless 2. Who is your Internet Service Provider (ISP)? Charter 3. What type of Broadband connection are you using? Cable 4. What is the exact Make and Model of your Modem, Router or Modem/Router Combo Netgear WNDR3800, Cisco DPC3008
Network & Sharing
how to allow only one port on windows
hi, I wanna to block all ports on windows, but allow the 53 UDP port. And the Windows firewall doesn't have this option.
System Security
Port forwarding(redirecting), NOT(!) port opening
Hi. I was tired when 50th result in google named "port forwarding" was actually question how to open port. To be specific, I would like windows 7 to do the same what this program does. Which means forward port... NOT fowarding port on my router NOT opening port(allow connections) in...
Network & Sharing
DVI port on monitor is stuck res of 640x480 VGA port works fine
I have dual monitors......my primary display monitor is a Chimei CMV223D My secondary display monitor is an Acer AL1916W. My graphics card is an HD ATI Radeon 5800. PROBLEM: My primary display monitor which usually has a display resolution of 1680x1050 is currently stuck on 640x480 and...
General Discussion
Redirect sound output port to sound input port
Hi! I broke my Headphones port so I cannot use it anymore. But I'm a musician and need it crucially. So I thought to use one of other two ports (FOR HEADPHONE SOUND OUTPUT SIGNAL) I have left: one for Line in and one for Mic in. My sound card is High Definition Audio (at least I see this in...
Sound & Audio
Can someone port the windows XP icons on to 7?
I longed wanted XP icons to match my luna and royale themes. If anyone can port them to 7, I would really glad! Thanks.:D
Themes and Styles


Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 03:42.

Twitter Facebook Google+



Windows 7 Forums

Seven Forums Android App Seven Forums IOS App