I cannot access my job's VPN from home

If it hasn't already been mentioned, something you might try is different protocols in your VPN. For example, I read somewhere that TCP was working better than UDP for some. 

@IXO how do i go about changing the Protcols?  I'm not in our IT department. Is that something i can do on my own?

The firmware update Tmobile did had fixed the issue when i was using my work laptop, but I still have issues when trying to sign in from my personal laptop.

JohnL wrote:

leechat wrote:

I am currently working from home.  I use a company provided laptop with an always on VPN client to access my job's servers. No problem with spectrum cable. I have the brand new grey t-mobile gateway and cannot get in.  My IT guy worked with me and says it must be how the ports are provisioned.  He said to call and get level 2 support.  He wanted to know about specific ports. Did that, was on hold over an hour.  Tech I spoke with basically said they don't do ports. What?!  In fact when I gave her the port #s to look into she basically said no, thats not how it is designed. The tech I spoke with before her said WAN is blocked by default. What?! The level 2 person said that was not right. I get about 130 Mbps down and about 35 Mbos up. So speed is good.  My tvs, tablets, laptops, nintendo gaming, vivint(connect with lan cable to one of two ports on gateway) are streaming working fine. I can surf the web from the company laptop.  I can also get to my MS Teams & Outlook. But when I try to access a certain part of the network it won't connect. Level 2 tech opened a ticket. My VPN does not like this gateway for some reason. 

Any resolution?

I have the VPN issues with MS Client VPN and running out of option other than cancelling it.

 

Did you find a solution John?  I also work for MS and am having issues..

Any luck with a good solution for this? I  have NOK 5G21 GATEWAY GRY KIT. My company uses Cisco Anyconnect to VPN through company laptop. And VMware Horizon Client to remote in from personal laptop. My company blames T-mobile, and t-mobile blames my company. It works perfectly fine from my friend's internet (internet from other company), but I have issue when trying from t-mobile wireless internet. At this point I don't see any option other than switching company for internet. 

Trying change MTU on PC to 1390 or find proper MTU using ping to destination IP. What's allow MTU 

https://www.tiktok.com/t/ZTRDu62Ft/?k=1

DJinMN wrote:

Following - similar boat here, GlobalProtect VPN does not want to play nice with the T-Mobile home internet apparently. :( 

Odd I haven't had any issues with globalprotect VPN I'm having issues with Citrix workspace that we use to access a virtual application 

leechat wrote:

Sorry for the delay.  Basically it is an IPv4 vs v6 issue and my IT says they are not going to re-provision the network to work with TMobile's IPv6 network. Here is what Tmob sent me in an email:

"There are no known issues with VPNs and how they interact with the T-Mobile network to provide internet service. There may be an underlying factor (that can only be addressed by the owner of that VPN client) where there is a need to have ipv4 and ipv6 double stacked into the setup configuration to avoid any service issues. Please have the customer reach out to their VPN client support to check if this is indeed the configuration being used and to also further troubleshoot the VPN issue.   

Failed outbound VPN connection is caused by a known carrier grade NAT issue relating to T-Mobile's implementation a fully IPv6 network and the implementation of 464XLAT, NAT64, and DNS64 for accessing IPv4 resources. The customer's VPN or VPN server they are connecting to is not properly configured to work with an IPv6 network. This is a third party issue that T-Mobile cannot help with."

That is a bold faced lie- if it was a third party issue with the VPN then why does everything work perfectly on my Verizon hotspot and it worked on my CenturyLink WiFi but suddenly I switch to T-Mobile and I can't access Citrix workspace VPN it just keeps disconnecting 

After spending the better part of two days trying to get my VPN working (using the built in Microsoft VPN software) it looks like there is no solution.

I was on Twitter DMs with T-Mo support, and after telling them what I did (MTU, Dropping IPV6, rebooting numerous times) they replied thusly:

It seems like you truly have done the steps we recommend and if multiple VPNs are not working we may not be able to get them to agree with the service. I know the VPN is crucial, I have to use one for work and I know tons of people use VPN for that. We may not always go the route of suggesting to cancel service or have that talk that the home internet service is not for you but at the end of the day our number one goal is to make sure our services do the job, and if they do not, I don't want to take your money for something like that.
 

I admire them for being willing to tell me this, and to lose me as a customer. It is refreshing to see this, as sad as I am to not have a solution
 

I am still trying to find a way to keep using them (I seldom use VPN, my wife needs it more frequently than I do, and we are looking for another solution)

My company uses Check Point SecuRemote VPN and I am getting "Negotiation with site failed” using TMHI.

I installed an Eero Pro mesh network, and now the VPN works without a problem.