I've been trying to establish a VPN between my computer and this V7610 router for quite some time, and getting error 789 "The L2TP connection attempt failed because the security layer encountered a processing error during initial negotiations with the remote computer"
I think the modem/router is configured ok, because I can establish a VPN from my iPhone.
I've tried to use exactly the same settings, L2TP/IPsec, preshared key.
I've enabled the additional Authentication protocols in the Security options.
I've edited the registry key AssumeUDPEncapsulationContextOnSendRule.
All updates are current, so the dodgy windows update that affected VPN's should not be an issue.
What would be the next step in diagnosing the problem....
Thanks 🙏🙏
Related
Hello over the weekend my self-hosted build agent lost connection to the DevOps Services. Not completely but I am getting connection errors on almost all of my builds.
my builds are failing with the error:
ERR Agent] System.Net.Http.HttpRequestException: The SSL connection could not be established, see inner exception.
---> System.IO.IOException: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host..
From the Agent diagnostic logs.
I tried re-installing the Agent but this is not possible either as I get the exact same error when I try to run config.cmd remove
I tried adding --sslskipcertvalidation but this does not seem to work with the remove command. I tried to remove the old from the services, but it will not remove from the agent machine as I cannot complete the "config.cmd remove" process.
No clue why I am getting these connection errors all of a sudden. (I am on the Basic plan)
Does not seem to be relating to any current reported Azure outages (2021-04-12).
I ended up installing the agent again in a separate folder from the old agent.
Likely the issue was that the old agent was installed with the url [org.name].visualstudio.com I guess there is now some SSL certificate issue on the old url.
I installed the new agent with the dev.azure.com/[org.name] url and this solved all of my issues.
The same thing happened to me, but I was able to solve it by installing this application on the server, which is used to activate the TLS2 protocols with just one click and the SSL Cipher Suites
TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 (0x9f) DH 2048 bits FS 256
TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 (0x9e) DH 2048 bits FS 128
nartac IISCrypto is the app
I'm trying to set up a remote desktop session for monitoring specific systems at my place of work. I only have access to a Linux machine and I need to connect via a terminal server gateway. I am using FreeRDP to do this and i am using the following command to create the connection:
xfreerdp /d:** /u:***** /p:******* /g:******.************.***
/v:****.*********.***** /port:3389 /size:1920x1080
I have hidden all connection details per my supervisors request however both he and I verified the correct information is entered into the fields.
When I send the connection through I get the following error:
Connected to ******.************.***:443
Connected to ******.************.***:443
TS Gateway Connection Success
Got stub length 4 with flags 3 and called 7
Got stub length 4 with flags 3 and called 6
SSL_read: I/O error: connection reset by peer (104)
Rpc_client_frag_read: error reading header
Would anyone have any idea of what I might be missing? I have even tried adding
/sec:rdp
to the script and even that produced the same error
Try rdp from a Windows system (or have someone else try from their system, since you don't have direct access to Windows). I know it won't solve your problem, but it may give you better information. I'm in a similar situation and got the same error message. I tried remmina instead of xfreerdp and got even less information than xfreerdp spits out.
From a Windows VM, at least I could tell when I got my domain\username & password right -- it told me my account was not allowed rdp access to that server. I'm figuring that means that there are accounts that can rdp in, but mine is not among them. Along the way, though, I found that the remote was using a certificate from an untrusted authority, which was useful information for my case.
If your Linux is old or hasn't been updated, do so. Your certificate store may be out of date. But it may also be that your company's Windows domain has certificates that Linux doesn't know about. It could be a simple matter that you're lacking the company-supplied cert (because they push it to all Windows machines on the domain, but your Linux machine doesn't get that "benefit").
I have a hosting account with Linux shared hosting account with GoDaddy, recently my ssh access stopped working, this is the error:
Toms-MacBook-Pro:production tom$ ssh tomheather50#192.186.452.73
ssh_exchange_identification: read: Connection reset by peer
This happens on my wifi connection however if I create a mobile phone hotspot and connect through my phone's 3g network I can successfully connect with no errors....
I have contacted GoDaddy support various times over the past 2 days and they have not been much help at all, simply put they have said I should just connect through the mobile network!!
After sending a traceroute to them I got this response.
We are tracking instances of connections dropping and being
intermittent through Level 3 and their IP 4.34.191.254. I noticed
that your connection that is having difficulty is being routed through
this path while the connection that did work is not routing through.
We are reaching out to Level 3 Communications to see if they can
identify and fix this situation. We are seeing more cases like yours
pop up from both Europe and the US. In the meantime I would recommend
using a connection that does not trace through Level 3 if at all
possible.
I'm not sure what means and it staggers me that GoDaddy can not ensure i can connect through my wifi connection !
Any advice, explanation and of course help would be great please guys.
The message indicates an internet connection issue in the Level3 network (i.e. somewhere in between your wifi network/internet provider and the godaddy site). Nothing that either you or godaddy can do to fix it, only Level3 can.
The suggestion is to use an alternate path, which happens when you use the 3G's network provider (instead of your internet provider). By chance I might add - the path between some 3G providers and godadday can still go through Level3's affected network.
Eventually Level3 will fix the issue (large providers usually do that pretty fast) and things will come back to normal.
It's always a good idea to have an alternate provider, your 3G one helped.
BTW: traceroute is the tool to check which path packets go through between your machine and the server you want to reach: https://developer.apple.com/library/mac/documentation/Darwin/Reference/ManPages/man8/traceroute.8.html
ssh_exchange_identification: read: Connection reset by peer
After lot of struggle, I fixed the ssh connection refused by simply running the following command.
sudo dhclient
We are experiencing the following error when trying to use an external web service from our application deploy under IIS 7.5.
Error - The underlying connection was closed: Could not establish secure channel for SSL/TLS.
This works from other servers, but on this particular one it fails. This started happening when the server we are trying to connect with disallowed SSL connections and is only accepting TLS. As described in this link http://support.microsoft.com/kb/915599 we changed the registry, but are still seeing the error. Please see the attached image of the registry to make sure this was done properly. It seems like IIS is still trying to use the SSL protocol. I'm a bit confused where in the communication process IIS selects the protocol, SSL vs TLS. Maybe there's something that needs to be done to ensure TLS is selected? Other ideas?
This was fixed at the code level by adding the following line -
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls;
I have been uploading to Azure for at least six months. From this afternoon onwards I now get messages like this:
There was no endpoint listening at https://management.core.windows.net/xxxxxx/services/hostedservices that could accept the message. This is often caused by an incorrect address or SOAP action. See InnerException, if present, for more details.
Unable to connect to the remote server
No connection could be made because the target machine actively refused it 127.0.0.1:8888
Can anyone give me advice on what's wrong. I tried to upload a new management certificate. That worked fine but then said "authentication error".
I have the same problem. It doesn't matter if the Fiddler is ON/OFF or the computer has been restarted - the problem is in Fiddler Option.
The msg was: "Unable to connect to the remote server No connection could be made because the target machine actively refused it 127.0.0.1:8888"
Go=> Fiddler/Tools/Fiddler Option/
Connection Tab:
make sure that "Allow remote computers to connect" is NOT checked
make sure that "Monitor all connections" is NOT checked
Here is a sample video:
http://screencast.com/t/S8y9NbpveSjd
Hope this helps.
Can you please check if Fiddler is running or not? Normally when you run Fiddler it acts as a proxy and listens at port 8888.
Hope this helps.
I have the similar issue. When I use Visual Studio 2013 to download an extension. It can not connect the remote site.
Assi.NET's method doesn't work. Which means unchecked "Allow remote computers to connect" and "Monitor all connections" still can't get rid of the problem.
To fix it, I find in the machine config file, I added something to enable default proxy. Make sure you DISABLE it.
The correct code is:
<system.net>
<defaultProxy
enabled = "false"
useDefaultCredentials = "true">
<proxy autoDetect="false" bypassonlocal="false" proxyaddress="http://127.0.0.1:8888" usesystemdefault="false" />
</defaultProxy>
</system.net>