vpn – Azure Virtual Network Gateway client – Unable to execute custom scripts (to update your routing table). Required files could be missing

We have an Azure virtual network gateway setup with machines connecting using the Point to Site client which was downloaded from the Azure portal. Most of the time this works fine, however occasionally users are getting the error: “Unable to execute custom scripts (to update your routing table). Required files could be missing.”

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There’s no indication as to why would be occurring or why it works most of the time. Event log doesn’t provide much information, merely stating the connection was terminated with reason code 631 (port disconnected by the user).

Does anyone have any pointers on what might be happening here or how to resolve?

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network manager – Proxy failing because system resolves it using local DNS instead of VPN (Ubuntu 20.04)

I am using an VPN over openconnect through NetworkManager. I also have a proxy server whose configuration is reachable via VPN (at http://wpad/wpad.dat). Sporadically, when I connect to VPN it fails to use the proxy server. I think this is because DNS lookup for the proxy server is failing.

The output of resolvectl status shows both links used for DNS, and the vpn is the default:

Link 5 (vpn0)
      Current Scopes: DNS    
DefaultRoute setting: yes    
       LLMNR setting: yes    
MulticastDNS setting: no    
  DNSOverTLS setting: no    
      DNSSEC setting: no    
    DNSSEC supported: no    
  Current DNS Server: <vpn_dns_a>
         DNS Servers: <vpn_dns_a>    
                      <vpn_dns_b>    
          DNS Domain: ~.    
                      <vpn_dom>

Link 3 (wlo1)
      Current Scopes: DNS    
DefaultRoute setting: yes    
       LLMNR setting: yes    
MulticastDNS setting: no    
  DNSOverTLS setting: no    
      DNSSEC setting: no    
    DNSSEC supported: no    
  Current DNS Server: <local_dns_a>
         DNS Servers: <local_dns_a>
                      <local_dns_b>
          DNS Domain: <local_dom>

I’ve verified that /etc/resolv.conf is a symlink to /run/systemd/resolve/stub-resolv.conf. The file itself looks like:

nameserver 127.0.0.53
options edns0 trust-ad
search <local_dom> <vpn_dom>

systemd-resolve wpad returns the server IP, but nslookup wpad times out. I looked at the systemd-resolved logs in both cases, and it looks like the former uses the VPN’s DNS, but the latter (as well as curl, etc.) uses the local link’s DNS. This might explain why it fails to resolve the server.

After enough fiddling (restarting network manager, clearing caches, etc.) this issue eventually works itself out, but it comes back up later. Do I need to configure anything else to make the system always use the VPN?

wi fi – My Samsung Galaxy S20FE can’t connect properly to my WiFi without using VPN

I noticed this problem a day ago wherein I can’t properly access any of my apps or games on my phone that would require an internet connection whenever I am connected to my WiFi. They would always notify me of a “network issue” that would make me unable to log-in and use said apps and games.

However, my desktop computer that connects to that very same WiFi connection has no such problems at all, nor the phones my family use— only I am experiencing this issue. I’ve checked the speed, but it didn’t drop or anything. I also tried forgetting the WiFi connection from the phone, as well as restarting the modem, but no such luck at all.

Interestingly, I am able to use the aforementioned apps and games if and only if I use mobile data or a VPN. Otherwise, I can’t access the internet.

Is there a way to fix this?

networking – Ubuntu 20.04 Slack 4.15.0 not using system proxy on VPN

When on my vpn (connected with openconnect), I require an http proxy to access the internet.

I have the system proxy configured to use wpad, and I know this works because firefox is set to use the system proxy, and it works both on and off of the VPN without changing any network settings.

So can Slack 4.15.0 use this system wide proxy setting and if so how? (This works fine on a different system running slack 4.14.0)

If slack cannot use the system wide proxy settings, can I configure slack to manually specify a proxy? I see older posts that suggest starting slack from the CLI using a --proxy-server option, but that option appears to not be available in 4.15. And I can’t find any way to set it in the /etc/slack.conf file either.

How can I use this latest version of slack on my VPN?

wireless networking – Outbound VPN is Blocked by a Physical Wall

Background

Consider my typical home network, consisting of a cable ISP and retail LinkSys WiFi router.

My iPhone automatically joins the WiFi network when it’s in range. Installed on the iPhone is ProtonVPN, client software for a popular VPN provider.

The VPN client connects “on demand” and for the most part works flawlessly.

Problem

All connections over the VPN fail when the iPhone is used from a particular room in my home.

Using another VPN client (e.g. OpenVPN) or even a different VPN provider all together (e.g. BraveVPN) triggers the same problem.

Analysis

The room in question has a concrete wall in the router-facing direction, so naturally one would assume that the WiFi signal is having trouble penetrating the wall, and perhaps I need a range extender of some sort.

Except that, while standing in the room in question…

  • The WiFi signal indicator shows full strength.
  • Manually disabling the VPN allows full connectivity to resume.
  • SpeedTest.net with VPN disabled shows 50ms latency, 80Mbps down, and
    10 Mbps up. The connection is totally solid from that room.

It’s only when the VPN is connected (any VPN, not just ProtonVPN) that connectivity is hindered, and only in that one room.

I’m familiar with the idea of a firewall blocking outbound VPN connections, but this case is unusual insofar as the connection seems to blocked by a physical wall.

Any idea what would cause an odd problem like this to manifest and how one would fix it?

virtual machine – Connect Azure VM to site to site with vpn connection, on premise server had f5 big-ip

I have a problem I want to connect an Azure virtual machine (Windows server 2019) to an on premise virtual machine (Windows server 2019) with a site to site connection, but the on premise server uses f5 Big-ip authentication. How can I make those 2 server talk to each other and I tried to search multiple guides couldn’t find any that describe my problem. The f5 configuration on premise is fully setup for azure.

vpn – How to run Windows Ikev2 with NonetworkFirewall?

I have a small problem.I setup Firewall App Blocker in whtielist Mode(means basically It cut all Internet except allowed apps by setting “block all connection that not match firewall rule” in windows firewall). After Setting on whitelist I See My OpenVPN and IKev2 not working(as expected).So I added Openvpn daemon in connection allowed list and Now my OpenVPN start working correctly.But when I added rasclient from system32 on allowed list Ikev2 is not working,It successfully connected but internet is not working.I even added whole system32 executables(that appear in front when open system32) in whitelists
but Ikev2 not working.

So Please tell me which executable I allow to successfully connect Ikev2 like OpenVPN or any other rule to add in firewall to allow IKev2 connection without Disabling Whitelist Mode?

Thanks for giving time to solve my Problem.

network – VPN and sleep behaviour on iPhones

I am going to buy my first iPhone soon and trying to sort out possible problems.

I plan to use VPN all the time, but, as far as I found, there is no Always On mode available without using Apple Configurator from Mac device, which I don’t have.

My goal is just to have vpn always enabled to prevent data leaks. It should be enabled all the time, disabled only manually by my own intervention, not by different network inactities and sleeps.

By data leaks I mean periods when OS reconnects to VPN after sleep or inactivity period and apps may use regular connection, not VPN-ized one for some time (at least, that was the matter on iOS 7 or 8 or like that).

Are these leak problems actual? Or is there any possible way to achieve always on behaviour to prevent leaks without having Mac?

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