google cloud platform – Unable to reach OpenVPN DNS /Public IP URL

Has anyone seen these error before with OpenVPN.

Secure Connection Failed

An error occurred during a connection to openvpn.example.com. PR_END_OF_FILE_ERROR

    The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
    Please contact the website owners to inform them of this problem.

I looked at the log file :/var/log/ openvpnas.log I found the following:

2021-09-14T19:58:23+0000 (stdout#info) (OVPN 0) OUT: 'Tue Sep 14 19:58:23 2021 myip:11301 Connection reset, restarting (0)'
2021-09-14T19:58:23+0000 (stdout#info) (OVPN 0) OUT: 'Tue Sep 14 19:58:23 2021 myip:11301 SIGUSR1(soft,connection-reset) received, client-instance restarting'
2021-09-14T19:59:13+0000 (stdout#info) (OVPN 0) OUT: 'Tue Sep 14 19:59:13 2021 TCP connection established with (AF_INET)myip:10603'
2021-09-14T19:59:13+0000 (stdout#info) (OVPN 0) OUT: 'Tue Sep 14 19:59:13 2021 Socket flags: TCP_NODELAY=1 succeeded'
2021-09-14T19:59:13+0000 (stdout#info) (OVPN 0) OUT: 'Tue Sep 14 19:59:13 2021 myip:10603 WARNING: Bad encapsulated packet length from peer (5635), which must be > 0 and <= 1627 -- please ensure that --tun-mtu or -
-link-mtu is equal on both peers -- this condition could also indicate a possible active attack on the TCP link -- (Attempting restart...)'
2021-09-14T19:59:13+0000 (stdout#info) (OVPN 0) OUT: 'Tue Sep 14 19:59:13 2021 myip:10603 Connection reset, restarting (0)'
2021-09-14T19:59:13+0000 (stdout#info) (OVPN 0) OUT: 'Tue Sep 14 19:59:13 2021 myip:10603 SIGUSR1(soft,connection-reset) received, client-instance restarting'

It seems like my request is making it to the instance as per logs in the GCP logging

{
insertId: “148f4tog64jclgg”
jsonPay

load: {
connection: {
dest_ip: "*******"
dest_port: 443
protocol: 6
src_ip: "*********"
src_port: ****
}
disposition: "ALLOWED"
instance: {

but have no idea why its getting dropped. Has anyone experience similar?

How to connect to multiple OpenVPN Server in Windows 10?

I would like to know how to connect to multiple OpenVPN Server in Windows 10.
I created some OpenVPN Server in my pfSense Router. I installed OpenVPN Community in my PC.
I ran the Add a new TAP-Windows6 virtual network adapter shortcut ‪[C:Program FilesOpenVPNbintapctl.exe] to create a new TAP adapter.
However, I don’t know how to edit the config. I have tried to rename the new created TAP adapter to tap1 and edit the config: dev tap1.
Using this config, I can establish connection but it still use the original tap Adapter. I also cannot access my network using this config.

Any suggestion are welcome.

My client config is like this

dev tun
persist-tun
persist-key
ncp-disable
cipher AES-128-GCM
auth SHA256
tls-client
client
resolv-retry infinite
remote xxx.xxx.xxx.xxx pppp tcp4
setenv opt block-outside-dns
lport 0
verify-x509-name "domain" name
auth-user-pass
remote-cert-tls server
auth-nocache

<ca>
-----BEGIN CERTIFICATE-----

-----END CERTIFICATE-----
</ca>
<cert>
-----BEGIN CERTIFICATE-----

-----END CERTIFICATE-----
</cert>
<key>
-----BEGIN PRIVATE KEY-----

-----END PRIVATE KEY-----
</key>
<tls-crypt>
#
# 2048 bit OpenVPN static key
#
-----BEGIN OpenVPN Static key V1-----

-----END OpenVPN Static key V1-----
</tls-crypt>

linux – Where and how should I define OpenVPN user pass?

PAM stands for a Pluggable Authentication Module, is a system authentication and authorization framework. It could use file, database, whatever you had configured as a password storage. It can even use things other than passwords to authenticate (say, OTP and so on); it can do two-factor authentication, link to external trusted third party (like Kerberos) and so on. In the simplest case it uses a shadow file to store encrypted passwords for system users.

openvpn-auth-pam module allows you to authenticate OpenVPN peers using this system authentication framework. login here means the PAM service your OpenVPN will use. Likely you already have some services, like system-auth is used for local users.

The login service as defined by default just finally refers to the system-auth. To use this as is you just create local system users, set their passwords and use those credentials in OpenVPN.

See files in /etc/pam.d/ to have a feel how it is configured and also please read PAM manual, then return and ask more concrete questions.

networking – OpenWrt: NTP traffic through OpenVPN

I have my OpenVPN connection fully configured and working with a US based dedicated IP. I am testing to ensure I don’t have any leaks but finding that my timezone on my router is still being set to my actual timezone, rather than my the timezone where the VPN connection is located. I’ve configured the router to use the US based NTP servers, but can’t figure out why the traffic to those servers isn’t being routed through the VPN connection. Any ideas? I’m using the below NTP servers, is there a static server I can use that will always return EST?

   server 0.north-america.pool.ntp.org
   server 1.north-america.pool.ntp.org
   server 2.north-america.pool.ntp.org
   server 3.north-america.pool.ntp.org

networking – Using a pf firewall to secure an OpenVPN connection

I’m experimenting with OpenVPN on my Macbook and am attempting to limit my outward network traffic to just the tun interface created by OpenVPN. With the pf firewall disabled I’m able to connect to my server and access the internet just fine.

Upon checking the log of OpenVPN, I find out the interface ‘utun4’ is being used. Therefore, I attempted adding the following lines to the end of my ‘pf.conf’:

anchor "testVpn.pf"
load anchor "testVpn.pf" from "/etc/pf.anchors/testVpn.pf.rules"

Then to ‘testVpn.pf.rules’:

block out all
pass out on utun4 from any to any

I then use ‘pfctl ‘f /etc/pf.conf’ and ‘pfctl -e’ after my OpenVPN connection has already been established.

From my understanding, this should stop outward traffic on all other network interfaces apart from my ‘utun4’ one. What I find is however that I can’t access the internet, and only when adding pass out on en0 from any to any to my ‘testVpn.pf.rules’ can I regain the connection without having the firewall off.

This is counterproductive though, as if my VPN connection drops- everything still passes through ‘en0’, but the reason I am trying to configure pf in this way is so that I can limit the traffic to the ‘utun4’ interface so that my internet connection gets cut off when the VPN connection is lost.

When checking answers to posts like this it seems like it should be working. Is there anything else I should be checking that could be stopping me from getting my desired result?

Thanks.

openvpn – Require access to LAN when connecting through RaspberryPi VPN access point

openvpn – Require access to LAN when connecting through RaspberryPi VPN access point – Super User

openvpn – VPN server behind router

I’m about to set up a Ubuntu server at home for hosting sftp and web. Currently I have installed OpenVPN Access Server in the server machine but it’s still not accessible externally as it’s behind my home router. As I know so far, there seems no alternatives to initiate the VPN connection from the client app on external devices, except using port forwarding to parse external requests from router to the server port that runs OpenVPN AS. Is this approach secured enough given I use a strong VPN password? Or otherwise, will there be any safer approaches to make the home server accessible from outside?

networking – OpenVPN network adapter on Windows machine keeps getting/losing IP address every 15 seconds

I have an instance of Windows Server 2019. I installed OpenVPN 2.4.9 on it. This resulted in a new network adapter called “Local Area Connection / TAP-Windows Adapter V9” as seen in the Control Panel:

enter image description here

This Windows machine is acting as an OpenVPN client. Here is the OpenVPN client configuration on the machine:

client
dev tap
proto tcp
remote x.x.x.x 1194
resolv-retry infinite
nobind
persist-key
persist-tun
remote-cert-tls server
auth SHA512
cipher AES-256-CBC
ignore-unknown-option block-outside-dns
block-outside-dns
verb 3

Another machine is acting as the OpenVPN server. Here is that machine’s server.conf:

local x.x.x.x
port 1194
proto tcp
dev tap
ca ca.crt
cert server.crt
key server.key
dh dh.pem
auth SHA512
tls-crypt tc.key
topology subnet
server 10.8.0.0 255.255.0.0
ifconfig-pool-persist ipp.txt
client-config-dir /etc/openvpn/ccd
client-to-client
keepalive 10 120
cipher AES-256-CBC
user nobody
group nogroup
persist-key
persist-tun
status openvpn-status.log
verb 3
crl-verify crl.pem

I am trying to have the OpenVPN server assign a static IP address of 10.8.0.2 to the Windows Server 2019 machine. Here is the file under the OpenVPN server’s /etc/openvpn/ccd directory for the client:

ifconfig-push 10.8.0.2 255.255.0.0

When the OpenVPN client on the Windows Server 2019 starts, it appears to connect to the OpenVPN server fine. Here is the log file on the OpenVPN client:

Wed Jul 14 01:15:02 2021 (server) Peer Connection Initiated with (AF_INET)x.x.x.x:1194
Wed Jul 14 01:15:03 2021 SENT CONTROL (server): 'PUSH_REQUEST' (status=1)
Wed Jul 14 01:15:03 2021 PUSH: Received control message: 'PUSH_REPLY,route-gateway 10.8.0.1,ping 10,ping-restart 120,ifconfig 10.8.0.2 255.255.0.0,peer-id 0,cipher AES-256-GCM'
Wed Jul 14 01:15:03 2021 OPTIONS IMPORT: timers and/or timeouts modified
Wed Jul 14 01:15:03 2021 OPTIONS IMPORT: --ifconfig/up options modified
Wed Jul 14 01:15:03 2021 OPTIONS IMPORT: route-related options modified
Wed Jul 14 01:15:03 2021 OPTIONS IMPORT: peer-id set
Wed Jul 14 01:15:03 2021 OPTIONS IMPORT: adjusting link_mtu to 1658
Wed Jul 14 01:15:03 2021 OPTIONS IMPORT: data channel crypto options modified
Wed Jul 14 01:15:03 2021 Data Channel: using negotiated cipher 'AES-256-GCM'
Wed Jul 14 01:15:03 2021 Outgoing Data Channel: Cipher 'AES-256-GCM' initialized with 256 bit key
Wed Jul 14 01:15:03 2021 Incoming Data Channel: Cipher 'AES-256-GCM' initialized with 256 bit key
Wed Jul 14 01:15:03 2021 interactive service msg_channel=0
Wed Jul 14 01:15:03 2021 open_tun
Wed Jul 14 01:15:03 2021 TAP-WIN32 device (Local Area Connection) opened: \.Global{526EF9D3-DC84-41B0-B139-F1D4BAEFBF4F}.tap
Wed Jul 14 01:15:03 2021 TAP-Windows Driver Version 9.24 
Wed Jul 14 01:15:03 2021 Notified TAP-Windows driver to set a DHCP IP/netmask of 10.8.0.2/255.255.0.0 on interface {526EF9D3-DC84-41B0-B139-F1D4BAEFBF4F} (DHCP-serv: 10.8.0.0, lease-time: 31536000)
Wed Jul 14 01:15:03 2021 Successful ARP Flush on interface (11) {526EF9D3-DC84-41B0-B139-F1D4BAEFBF4F}
Wed Jul 14 01:15:03 2021 Block_DNS: WFP engine opened
Wed Jul 14 01:15:03 2021 Block_DNS: Using existing sublayer
Wed Jul 14 01:15:03 2021 Block_DNS: Added permit filters for exe_path
Wed Jul 14 01:15:03 2021 Block_DNS: Added block filters for all interfaces
Wed Jul 14 01:15:03 2021 Block_DNS: Added permit filters for TAP interface
Wed Jul 14 01:15:08 2021 TEST ROUTES: 0/0 succeeded len=-1 ret=0 a=0 u/d=down
Wed Jul 14 01:15:08 2021 Route: Waiting for TUN/TAP interface to come up...
Wed Jul 14 01:15:13 2021 TEST ROUTES: 0/0 succeeded len=-1 ret=0 a=0 u/d=down
Wed Jul 14 01:15:13 2021 Route: Waiting for TUN/TAP interface to come up...
Wed Jul 14 01:15:14 2021 TEST ROUTES: 0/0 succeeded len=-1 ret=0 a=0 u/d=down
Wed Jul 14 01:15:14 2021 Route: Waiting for TUN/TAP interface to come up...
Wed Jul 14 01:15:15 2021 TEST ROUTES: 0/0 succeeded len=-1 ret=0 a=0 u/d=down
Wed Jul 14 01:15:15 2021 Route: Waiting for TUN/TAP interface to come up...
Wed Jul 14 01:15:16 2021 TEST ROUTES: 0/0 succeeded len=-1 ret=0 a=0 u/d=down
Wed Jul 14 01:15:16 2021 Route: Waiting for TUN/TAP interface to come up...
Wed Jul 14 01:15:17 2021 TEST ROUTES: 0/0 succeeded len=-1 ret=0 a=0 u/d=down
Wed Jul 14 01:15:17 2021 Route: Waiting for TUN/TAP interface to come up...
Wed Jul 14 01:15:18 2021 TEST ROUTES: 0/0 succeeded len=0 ret=1 a=0 u/d=up
Wed Jul 14 01:15:18 2021 WARNING: this configuration may cache passwords in memory -- use the auth-nocache option to prevent this
Wed Jul 14 01:15:18 2021 Initialization Sequence Completed

As you can see, the OpenVPN client is receiving the 10.8.0.2 IP address from the OpenVPN server. However, I am repeatedly doing ipconfig in a command line window, and what I see is that every 15 seconds, the following happens:

  • the “Local Area Connection” adapter gets an IP address of 169.254.211.103 for a few seconds
  • then the “Local Area Connection” adapter gets an IP address of 10.8.0.2 for one second. During this one second, a ping of 10.8.0.1 (the OpenVPN server) will be successful.
  • then the “Local Area Connection” adapter does not show any IP address for the next ~12 seconds
  • this process keeps repeating every 15 seconds

While this is happening, I can see the adapter in the Control Panel sometimes changes to “Identifying…”:

enter image description here

If the OpenVPN client is getting the 10.8.0.2 address from the OpenVPN server, then why is the adapter first having a 169.254.x.x address assigned? Then why does it have the 10.8.0.2 address assigned for only 1 second before it loses it?

vpn – OpenVPN client – session-start: ** ERROR ** Failed to start new session: Failed calling D-Bus method Connect: Timeout was reached

First I run: $ openvpn3 config-import --config jethro-cao.ovpn, and get the expected output of: Configuration imported. Configuration path: /net/openvpn/v3/configuration/339401a6xf41ex483ex8ea4x60cfa3e2a844

Now I try to connect like shown below:

$ openvpn3 session-start --config-path /net/openvpn/v3/configuration/339401a6xf41ex483ex8ea4x60cfa3e2a844
Session path: /net/openvpn/v3/sessions/c398f1cesbd60s4ae5sabbbs123b9bb27186
Auth User name: jethro.cao
Auth Password: 
Enter Authenticator Code: 629542

Then after about a 10sec hang, the following error gets displayed:

session-start: ** ERROR ** Failed to start new session: Failed calling D-Bus method Connect: Timeout was reached

My username and password (and OTP too ofc) should all be correct, since I’m able to log into the OpenVPN CWS using the same credentials to manage my profile.

Also running $ openvpn3 sessions-list, after a very long wait of over a minute, I get the following output:

-----------------------------------------------------------------------------
        Path: /net/openvpn/v3/sessions/c398f1cesbd60s4ae5sabbbs123b9bb27186
     Created: Mon Jul 12 18:56:36 2021                  PID: 38321
       Owner: jyscao                                 Device: (None)
 Config name: jethro-cao.ovpn
      Status: (No status)
-----------------------------------------------------------------------------

Anyone have experience with this issue?

Edit: I should add, up until today these commands were working well for me, for about 2 weeks.

How secure is OpenVPN? [closed]

We have to set up a VPN connection to our servers in order to allow our workers to connect to our machines while they work from home. I suggested using OpenVPN but one of my colleagues replied that OpenVPN is flawed and can be easily breached.

As far as my knowledge goes, only people to which is given the OpenVPN Profile are able to join through that connection because they need the certificates embedded in the profile + the private key that is given to them during the profile creation process.

So, in brief, the question is: can we set up an OpenVPN VPN without risking to compromise our company?

DreamProxies - Cheapest USA Elite Private Proxies 100 Cheapest USA Private Proxies Buy 200 Cheap USA Private Proxies 400 Best Private Proxies Cheap 1000 USA Private Proxies 2000 USA Private Proxies 5000 Cheap USA Private Proxies ExtraProxies.com - Buy Cheap Private Proxies Buy 50 Private Proxies Buy 100 Private Proxies Buy 200 Private Proxies Buy 500 Private Proxies Buy 1000 Private Proxies Buy 2000 Private Proxies ProxiesLive.com Proxies-free.com New Proxy Lists Every Day Proxies123.com Proxyti.com Buy Quality Private Proxies