Network connection intermittently blocks a port Error 619
I was recently setup on a network whereby 30 other people are setup and have no problems apparently with connecting to it. I remote in from a home office. To the same network and I have constant intermittent connection problems.
I have a
Cisco WRVS4400Nv2 from a Vista 32 bit Business OS Using Windows VPN connecting to a Win 2008 Server
I do get connected at times. Once connected I seem to stay connected. However once I disconnect to check email on that same machine or something like that it could take several minutes to get reconnected. This is not user and password related.
Here is what I get:
It shows that "Verifying user name and password" and it never connects. It stays frozen in that state.
I do not have an internet browser open.
I do not have Microsoft Outlook open.
I have tried both with RDP connecting in from another machine to do this
I have tried sitting at the machine and attempted the same process.
I still get intermittent connections either way. RDP does not seem to matter at all.
I do not get a message identifying a specific port.
Does anyone know what I could check to see what could be causing this. I was told I could have no TCP IP protocols running. How could I check for that if something is running in the background?
I have a client that is very frustrated with me because I cannot do the work they need becuase of this problem. They have tested my connection from a remote connection with my user and password that has worked every time. They have tested more than 50 times all connected? Any help would be greatly appreciated....!
NetworkConnectionError.png
I have a
Cisco WRVS4400Nv2 from a Vista 32 bit Business OS Using Windows VPN connecting to a Win 2008 Server
I do get connected at times. Once connected I seem to stay connected. However once I disconnect to check email on that same machine or something like that it could take several minutes to get reconnected. This is not user and password related.
Here is what I get:
1. symptoms
It shows the IP address that I am connecting to. I am absolutely positively sure I am giving the proper user and password.It shows that "Verifying user name and password" and it never connects. It stays frozen in that state.
I do not have an internet browser open.
I do not have Microsoft Outlook open.
I have tried both with RDP connecting in from another machine to do this
I have tried sitting at the machine and attempted the same process.
I still get intermittent connections either way. RDP does not seem to matter at all.
I do not get a message identifying a specific port.
Does anyone know what I could check to see what could be causing this. I was told I could have no TCP IP protocols running. How could I check for that if something is running in the background?
I have a client that is very frustrated with me because I cannot do the work they need becuase of this problem. They have tested my connection from a remote connection with my user and password that has worked every time. They have tested more than 50 times all connected? Any help would be greatly appreciated....!
NetworkConnectionError.png
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Nenad Rajsic
Do you have ICS (internet Connection Sharing ) enabled on your machine?
ASKER
Firmware is latest 2.0.0.8
All VPN Passthrough settings are enabled
I would not think so since it is an intermittent problem. Honestly I would not know where to look. I have Microsoft Security Essentials on the same machine.
ICS (internet Connection Sharing ) there is no tab for sharing on this Network Connection at all. I also looked for the heck of it at my LAN connection and it does not have one either.
Any thoughts?
All VPN Passthrough settings are enabled
I would not think so since it is an intermittent problem. Honestly I would not know where to look. I have Microsoft Security Essentials on the same machine.
ICS (internet Connection Sharing ) there is no tab for sharing on this Network Connection at all. I also looked for the heck of it at my LAN connection and it does not have one either.
Any thoughts?
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Could a Vonage Device Modem VOIP be causing problems since it is connected to the router directly.
I disabled MSE and tried again and got no change.
I thought about rebooting the router and the machine but don't know if that will do any good?
Consequently the machine I was using to connect to the VPN was on a switch connected to the WRSV4400N. I went from that switch and did a direct connect to the router. I did not reboot but will try that now.
The IT person told me that the connection would be blocked if I have any TCP IP running in the background. Can anyone tell me how I can check that as well?
I disabled MSE and tried again and got no change.
I thought about rebooting the router and the machine but don't know if that will do any good?
Consequently the machine I was using to connect to the VPN was on a switch connected to the WRSV4400N. I went from that switch and did a direct connect to the router. I did not reboot but will try that now.
The IT person told me that the connection would be blocked if I have any TCP IP running in the background. Can anyone tell me how I can check that as well?
ASKER
I disconnected the Vonage VOIP modem and it made no difference. After about 50 attempts I finally got back in then had to disconnect at 10 pm as a backup process starts and it bumps me out anyway. I should be able to get back in in a while after another 50 or so attempts.
I rebooted the router and no change as well.
I rebooted the router and no change as well.
> then had to disconnect at 10 pm as a backup process starts
before you disconnected, your connection was stable all the time for that session??
umm... is it possibly a MTU issue, as the VPN connection and two hosts at both ends might have different window size?? just a guess.
before you disconnected, your connection was stable all the time for that session??
umm... is it possibly a MTU issue, as the VPN connection and two hosts at both ends might have different window size?? just a guess.
I think bbao is on to something. I know that Cisco VPN tunnels are set to 1300, at least back in the day.
Look at this to adjust the MTU for your windows VPN tunnel.
http://support.microsoft.com/kb/826159
Look at this to adjust the MTU for your windows VPN tunnel.
http://support.microsoft.com/kb/826159
ASKER
MTU was set to manual and 1492 does that sound like it is right on or off?
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I tried the setting 1300, 1500, 1492, and 1472 which you had above. I am now getting a different error. See image. When I went to Diagnose it responded "Windows did not find any network problems with this connection."
I did the ping dslreports.com and got the message below. See second image.
VPNConnectionError.png
ping-dslreports.png
I did the ping dslreports.com and got the message below. See second image.
VPNConnectionError.png
ping-dslreports.png
That message means you need to lower your MTU.
I may have been unclear. In your ping, the number is the size of the packet. Keep sending that, reducing the number, until you do not get the message. Then, set your MTU on your PC and router to that.
Try that and let me know what you get.
I may have been unclear. In your ping, the number is the size of the packet. Keep sending that, reducing the number, until you do not get the message. Then, set your MTU on your PC and router to that.
Try that and let me know what you get.
ASKER
We tested and found that the MTU is best set at 1472 we also tried auto which seemed to be somewhat consistent in allowing packets through. We went up and down and found it to be the best. I was on the phone with a great CISCO small business tech support guy for a while there and we tested every way possible as to what this issue could be.
What is funny is I have a win2003sbs with no AV at all and it connects fairly consistently almost every time. Sometimes I have to wait a minute for it to "seemingly let go of the last connection" then it will let me reconnect. I only think it is not letting go of the last connection as it seems to get stuck on the following connection if I connect right away after a disconnect. It seems to get stuck on the verify username and password.
I have two other machines a Vista 32 bit business machine OEM from the Microsoft Action Pack Partner program I am in. (wonder if that could be the problem) "Don't know where to start looking for trouble there. The Vista machine also has Microsoft Security Essentials disabled and it will connect maybe 1 out of every 40 tries to the network.
Finally I have a real horse of a Windows 7 Ultimate 32 bit machine that I have tried to connect to the same network and I get the error 711 saying the Remote Access Connection manager service does not start. I go to services and try to manually start it and no such luck. I cannot get it to start. When I try to manually start it I get Error 20: the system cannot find the device specified.
The problem both the Vista and the Win 7 machines are better and properly configured to work on this project we have. The Win2003 SBS is not best suited for that. So we cannot seem get the right machines to do the job. Have you seen problems like this before.
I thought about doing a repair on the vista and win 7 machines but do not know if that would help as the win 7 machine seems to be missing something. Now I wonder if something was blocked on install or it was corrupted. Please advise. I may loose a big opportunity if I cannot get this client taken care of.....and who can afford to loose work these days...?
What is funny is I have a win2003sbs with no AV at all and it connects fairly consistently almost every time. Sometimes I have to wait a minute for it to "seemingly let go of the last connection" then it will let me reconnect. I only think it is not letting go of the last connection as it seems to get stuck on the following connection if I connect right away after a disconnect. It seems to get stuck on the verify username and password.
I have two other machines a Vista 32 bit business machine OEM from the Microsoft Action Pack Partner program I am in. (wonder if that could be the problem) "Don't know where to start looking for trouble there. The Vista machine also has Microsoft Security Essentials disabled and it will connect maybe 1 out of every 40 tries to the network.
Finally I have a real horse of a Windows 7 Ultimate 32 bit machine that I have tried to connect to the same network and I get the error 711 saying the Remote Access Connection manager service does not start. I go to services and try to manually start it and no such luck. I cannot get it to start. When I try to manually start it I get Error 20: the system cannot find the device specified.
The problem both the Vista and the Win 7 machines are better and properly configured to work on this project we have. The Win2003 SBS is not best suited for that. So we cannot seem get the right machines to do the job. Have you seen problems like this before.
I thought about doing a repair on the vista and win 7 machines but do not know if that would help as the win 7 machine seems to be missing something. Now I wonder if something was blocked on install or it was corrupted. Please advise. I may loose a big opportunity if I cannot get this client taken care of.....and who can afford to loose work these days...?
wow, a lot of discussions here while i was sleeping.. :-)
so basically, the VPN connection is still not stable though you have tired using different Windows clients?
so basically, the VPN connection is still not stable though you have tired using different Windows clients?
Let's focus on the Win 7, I have Vista :D
Can you verify these services are started?
Plug and Play
Remote Access Auto Connection Manager
Remote Access Connection Manager
Telephony
From your last post, it sounds like your network is fine, it is your PC's.
Can you verify these services are started?
Plug and Play
Remote Access Auto Connection Manager
Remote Access Connection Manager
Telephony
From your last post, it sounds like your network is fine, it is your PC's.
ASKER
bbao
Yes I have used different machines and the only one that seems to work is the Win 2003 SBS with no AV on it. Bot Vista and Win 7 will not let me connect. They are my work horses and the ones I should be using for this project. I really should get them working yet both are not.
ZTrek7
Plug and Play - "Says it is started and set to automatic"
Remote Access Auto Connection Manager - Error 1068 The dependency, service or group failed to start. It is not started and set to manual.
Remote Access Connection Manager - will not start see my 4th paragraph above for error. It is not started but I was able to set it to automatic. Upon restart it would not start.
Telephony - "Says it is started" and is set to manual.
I would agree we have ruled out any possibility of network problems. It seems to be pc related on both. The funny thing is I cannot find any consistencies between either machine and everything seems to be turned off. Any thoughts..?
Yes I have used different machines and the only one that seems to work is the Win 2003 SBS with no AV on it. Bot Vista and Win 7 will not let me connect. They are my work horses and the ones I should be using for this project. I really should get them working yet both are not.
ZTrek7
Plug and Play - "Says it is started and set to automatic"
Remote Access Auto Connection Manager - Error 1068 The dependency, service or group failed to start. It is not started and set to manual.
Remote Access Connection Manager - will not start see my 4th paragraph above for error. It is not started but I was able to set it to automatic. Upon restart it would not start.
Telephony - "Says it is started" and is set to manual.
I would agree we have ruled out any possibility of network problems. It seems to be pc related on both. The funny thing is I cannot find any consistencies between either machine and everything seems to be turned off. Any thoughts..?
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I have never installed VM or the applications you described above. I will try to read up and figure that out. I assume that is part of the windows included applications built in or do I need to download something.
Also a concern is I have Crystal Reports and some development tools for SQL that I will need. I unfortunately have limitations of the number of licenses I can install. Is this like having a totally new install where I will need to reinstall all the applications I will need for this new VM. I am sorry for the ignorance. I just never really used it. I have always had a pc to install on or pre configured to work from...?
Also a concern is I have Crystal Reports and some development tools for SQL that I will need. I unfortunately have limitations of the number of licenses I can install. Is this like having a totally new install where I will need to reinstall all the applications I will need for this new VM. I am sorry for the ignorance. I just never really used it. I have always had a pc to install on or pre configured to work from...?
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I did not think to do this originally but I had an extra NIC card sitting out there with a good bit of capabilities on it. I swapped it out and noticed that the connection went right through so far every time. now. I never would have thought that the onboard NIC would be problematic but it seems to have been. I am awarding points for effort as all I did was switch out the network card but at least it works. The onboard card was a Realtek with the latest drivers installed. How embarrassing. Thanks for all your hard work. Consequently my other PC same situation onboard NIC does not work. Tomorrow I am going to get a new NIC for it similar to the spare and see if that works as well. Who da thunk it.!
ASKER
Apparently onboard NIC cound not handle it.
thanks for your points and glad to know the problem is fixed now. the NIC problem sounds weird but it does tell us something does happen. :-)