Questions tagged [tunnel]

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Run openvpn inside docker and use as gateway for internet for other networked devices

I am trying to run tunnel all my network traffic on my LAN via an OpenVPN client running inside a docker container. My router and default gateway is running on 10.10.10.1 I have OpenVPN running on ...
mrwooster's user avatar
  • 243
4 votes
1 answer
2k views

Forward IP packets to tunnel device

I have created an tunnel device using ip tuntap add dev tun0 mode tun user 0 group 0 I then assign it an ip address 192.168.0.1/22 ifconfig tun0 192.168.0.1 netmask 255.255.252.0 On my ethernet ...
Ashwin's user avatar
  • 41
3 votes
2 answers
1k views

IPv6 IPsec between two native IPv6 networks

Assume I have two networks, A and B, on sites either side of the globe. Both have native IPv6 and are using (hypothetically) just IPv6. IPv4 no longer exists. They can both access the internet ...
Matt Hamilton's user avatar
2 votes
1 answer
98 views

WinSCP-like ssh tunnel in Chrome OS

For the Chrome OS, is there any equivalent to the SSH tunnel functionality seen in WinSCP? At the destination, I need to tunnel from one machine via SSH into another for SFTP purposes. Usually I'm on ...
Michael Sandy's user avatar
2 votes
0 answers
208 views

How does a vpn route all traffic through it's tunnel but allow it's own traffic to go over the internet

TL;DR I want all outgoing traffic from my system to be routed to a tun0 device, wrapped with DNS packets and then sent to the internet, but the DNS packets also gets routed back to tun0 device. ...
Yarden's user avatar
  • 121
2 votes
1 answer
264 views

IPSec in IPSec with strongswan

I have server connected with remote LAN1 over IPSec tunnel. Now I want to setup second tunnel to LAN2 which is connected to router in LAN1, so I need to create Ipsec tunnel inside existing ipsec ...
Jarek's user avatar
  • 121
2 votes
0 answers
805 views

l2tpv3 tunnel with local ip in vrf (linux kernel vrf)

On a ubuntu host I have two identical ip addresses configured on two interfaces enslaved to two different kernel vrfs. Here they are: mikle@LabHost:~$ ip link show vrf VRF1401 7: enp3s0f0.1401@...
off-on's user avatar
  • 21
2 votes
0 answers
198 views

IPv6 connectivity through IPv4 using OpenVPN

I've set up a Debian-based server at home, which handles dhcp and a bunch of other services. Unfortunately, even though the machine is capable of using IPv6, my ISP doesn't support it. I was wondering ...
theP1's user avatar
  • 21
2 votes
0 answers
1k views

Xl2tpd + pppd tunnel persist error

The issue I am experiencing is based around a l2tp tunnel from a Raspberry pi3 to our radius server. If there is no response from the server for over a minuet the ‘ppp0’ interface made by xl2tpd gets ...
Sam Hester's user avatar
2 votes
1 answer
1k views

GRE Tunnel in CentOS

How to create a GRE Tunnel in CentOS pointing all connections to server A for the server B? I have a public server with DDoS protection and need to use this as a firewall to filter acess to the other ...
Guest's user avatar
  • 21
2 votes
0 answers
109 views

Route public subnet to client location

Due to the fact that my ISP introduced CGN/DSLite and I still need public IPv4 addresses, I was thinking about tunneling an unused /29 that I own from my server to my local Linux box. After doing ...
Reallumpi's user avatar
2 votes
1 answer
1k views

How to provide access to lan mysql DB from a remote server?

Consider the below network configuration: A client connects with its workstation to the application server on the Web. The application is full HTML, so only browsing through HTTPS is enough to ...
Dom's user avatar
  • 21
2 votes
0 answers
2k views

Site-to-site VPN between Azure Virtual Network and a Cisco RV016

I'm attempting to configure a Cisco RV016 router to connect to an Azure Virtual Network to create a site-to-site VPN, but it's not working. I'm aware that a Cisco RV016 is not in the list of ...
BG100's user avatar
  • 169
2 votes
0 answers
186 views

Dynamic VPN tunneling technologies

Ok, so I'm asking a more specific question this time. I'm writing a paper about Cisco's DMVPN and one of the tasks I have is to make the analysis of available network solutions which use dynamic VPN ...
Adam's user avatar
  • 21
2 votes
1 answer
568 views

How do I set up an ssh -w tunnel VPN between AWS VPC and a Linode?

I'm probably not going to use this for the long term, but I still want to know why this isn't working. I've set up a simple ssh tunnel from my Linode instance to one AWS EC2 instance within my VPC. ...
Jim Dennis's user avatar
1 vote
1 answer
708 views

Session Continually Times out when Accessing SuperMicro IPMI via Cloudflare Tunnel

I have a SuperMicro X12dpi-N6 motherboard system that is currently running Ubuntu 22.04 Server. In order to support remote maintenance, I configured a cloudflare tunnel that would allow me to access ...
Max Feinberg's user avatar
1 vote
0 answers
122 views

Forward traffic server to another server with iptable and domain

I want to forward all traffic from server1 to server2 with domain same: sysctl net.ipv4.ip_forward=1 iptables -t nat -A PREROUTING -p tcp --dport 22 -j DNAT --to-destination IpServer1 iptables -t nat -...
Pinotech LTD's user avatar
1 vote
0 answers
75 views

Connection to Apache server dont pass from openVPN tunnel

I working with two VMs in virtualbox. Both of them are in one Subnet 10.0.2.0. On first VM I run client.conf and on other VM run server.conf and startup Apache Server. OpenVPN tunnel established ...
Artin Kennedy's user avatar
1 vote
0 answers
550 views

Block IPv6 on Tun0

I'm setting up a VPN tunnel for some services. I created a vpntunnel/vpntunnel user/group that is routed to the tun0 interface based on the group ID. That works quite fine. Commands below run as ...
Axel's user avatar
  • 11
1 vote
1 answer
1k views

Proxy/Route requests to subdomains to different local/wireguard IP addresses?

We have a virtual machine with a public IPv4 address, to which our example.com and *.example.com domain points. We have several distributed low-tech computers establishing a wireguard connection/...
fooness's user avatar
  • 11
1 vote
1 answer
3k views

Is there a way to reload new IPSEC certificates without restarting the service and interrupt existing tunnels?

I'm searching for a way to reload new IPSEC certificates without restarting the service and interrupt existing tunnel connections. As part of the activity, I'm replacing certificates (including ...
Barti's user avatar
  • 11
1 vote
0 answers
122 views

Is it possible to send traffic through the VPN tunnel to the VPN gateway itself?

I have a WAN interface X and a web server Y behind NAT, that is traffic to X:443 is being forwarded to Y:443. Web server is accessible from the internet without any problems. Then I have a site-to-...
OGCJN's user avatar
  • 111
1 vote
1 answer
119 views

Reverse SSH two times from C to B and from A to B to shh from A to C

My hosts: A - windows WSL (can not install ssh in Windows, only in WSL) B - ubuntu 16.04, with sudo C - redhat 7, without sudo or root Then access I have: I can access B from A I can access B from ...
Robert Grzelka's user avatar
1 vote
0 answers
35 views

If an echo from tunnel interface IP is successful but an echo from the tunnel interface source fails, is that an outage with ISP?

Trying to track down an outage. Our Cisco ASR has a tunnel configured as IP: 100.64.#.# Source: 192.#.#.# (Amazon DX block, this address is also configured as a loopback on another interface) ...
screampuff's user avatar
1 vote
0 answers
316 views

Tunneling on Linux through VPN on windows host for yum

I need to upgrade and install some yum packages on remote server without internet access that's only accessible with a VPN client on a Windows host. Once this VPN connection is established the Windows ...
imbtfab's user avatar
  • 111
1 vote
0 answers
2k views

VPN Tunnel - Crypto map policy error

Good day! GCP reports the following error: The peer gateway notifies: Proposal mismatch in CHILD SA (phase 2), Please look at peer logs. On the ASA 5505 side I'm getting: Map Policy not found for ...
Andrew H's user avatar
1 vote
0 answers
214 views

Linux Advanced Routing Use Remote Gateway On LAN

I am trying to route a remote gateway so it can be used on the LAN to assign public IPs from a remote network. I have partially succeeded with some hacking around but cannot fully achieve what I want....
Areeb Soo Yasir's user avatar
1 vote
0 answers
330 views

User-specific SFTP Tunnels

Basically, I have a couple differant Centos7 LAMP stacks running on differant virtual machines (on xenserver) & openSSH. I also have a couple intermediate proxy authentication servers running (...
myf4ult's user avatar
  • 11
1 vote
0 answers
1k views

Ethernet over GRE bridging - Proxmox

I'm trying to install two proxmox on Online.net server's, and I just realized that their RPN feature doesn't work at all like the OVH vRacks. Since I need the different VM's on both hypervisors to be ...
Ulrar's user avatar
  • 397
1 vote
0 answers
1k views

Build IPv6 over IPv4 tunnel between server and home network

On one side I have an Ubuntu server in a data center that has IPv6 connectivity. The eth0 interface has a public IPv4 and also a public IPv6 /48. From that server I can ping IPv6 addresses OK. On the ...
Bastian's user avatar
  • 283
1 vote
0 answers
1k views

Routing IPv6-traffic from client via OpenVPN-server

For playing and learning purpose i set up an OpenVPN-server. Im currently attached to a network without IPv6. Because of that, I would like to route all IPv6-traffic via the VPN. With IPv4 and ...
M. Schmidt's user avatar
1 vote
0 answers
4k views

IPSec tunnel not working when set up asynchronously

I'm trying to create a tunnel using StrongSwan. In order to do this, I'm creating two sh files, one for each gateway router. All I'm doing in the sh files is creating the tunnel, configuring it, and ...
exxodus7's user avatar
1 vote
1 answer
3k views

How to troubleshoot GRE tunnel issues?

I commonly run into issues where a GRE tunnel (CentOS server to server, not router based) works and pings fine from both ends but the IP / Range being tunneled does not function. This almost always ...
linux911's user avatar
1 vote
0 answers
784 views

Using TomatoUSB and OpenVPN to tunnel IPv6 traffic

Assume the following scenario regarding the current IPv4/OpenVPN setup: Central Site with a /64 IPv6 (10.0.0.1) | | OpenVPN Server A OpenVPN Server B ...
mback2k's user avatar
  • 111
1 vote
1 answer
434 views

Configure subversion to start SSH tunnel automatically for HTTP-only SVN server

We have an SVN server accessible with HTTP (and only HTTP) running on a firewalled port on our development system: dev $ svn checkout http://localhost:1234/proj/trunk On my workstation, I created a ...
jon's user avatar
  • 11
1 vote
0 answers
2k views

why ping6 fails if tcpdump shows ICMP6 request/reply traffic?

I'm having a very strange problem with IPv6 pings on OpenWRT (fon-ng firmware with IPv6 enabled) and hoping someone can help with investigation. In short - wpan0 interface with address aaaa::1/64 is ...
Maxim Osipov's user avatar
0 votes
1 answer
83 views

cannot connect client to wireguard server in LAN

10k feet view I want to connect my PC in LAN to a server in the same LAN using wireguard to use his services through a tunnel. server conf [Interface] Address = 10.0.0.1/24 SaveConfig = true ...
Jakkins's user avatar
0 votes
0 answers
202 views

Simple MySQL tunnel without SSL or SSH?

What I have I have a MySQL database that allows whitelisting only 2 individual IP addresses. No other access to that server except a MySQL username and password. What I need I need to connect Google ...
ᴍᴇʜᴏᴠ's user avatar
0 votes
0 answers
434 views

Connecting squid to upstream proxy using CONNECT request

I'm setting up a reverse proxy that has to forward all the requests to a given url.com/resource. Now, that resource is behind a proxy, so it has to use the CONNECT request. The idea is that squid, ...
dario's user avatar
  • 1
0 votes
0 answers
110 views

ping reports not receiving any package while tcpdump logs echo replies

INTRO: There's an IPIP tunnel (call it megatun0) to a machine connected to a private network. The megatun0 tunnel is bound with the address 192.168.15.1. One of the network interface on the machine ...
Some Name's user avatar
  • 143
0 votes
0 answers
80 views

Why is there still traffic to destinations other than the peer address when a wireguard tunnel is active?

Backstory: I've set up my firewall rules to prevent traffic from leaking outside of the wireguard vpn tunnel, because it happened before that the wg interface was active, but there was no active ...
aardbol's user avatar
  • 1,473
0 votes
0 answers
557 views

Cannot get a local address when establishing tunnels using openVPN

I am trying to establish a tunnel with a remote server using openVPN, at the beginning everything went just fine, while a few days later the establishing process often failed (now it has a 100 percent ...
Charriesun's user avatar
0 votes
0 answers
135 views

using putty and socat to run rust server behind firewalls

i want to run a publicly accessible Rust server on a windows machine behind some routers and firewalls. the idea is tunneling the local server ports to a public machine where they are accessable: rust ...
weiss100's user avatar
0 votes
1 answer
296 views

Can I tunnel all ports from remote server to 127.0.0.2 (for example), so work with it like with localhost

I have a remote server. I started on remote server app that listen localhost only. I want to tunnel this server to local ip like 127.0.0.2 and access this app through like I on remote server. I need ...
Дмитрий Лейкин's user avatar
0 votes
0 answers
711 views

Nginx and Cloudflare Argo Tunnel - 502 Bad gateway

I am using a Cloudflare Tunnel, along with a Nginx docker container, under the same tunnel network. I followed this guide to set up Nginx with Cloudflare. The goal is for me to be able to reach ports ...
Globe's user avatar
  • 11
0 votes
1 answer
204 views

No IPv6 connectivity on the router behind the NAT

I have the following scenario. My ISP does not provide IPv6. As common practice, I've created a SIT tunnel with Hurricane. My network is the following. WAN (eth0) ------------ router A ...
Mazzy's user avatar
  • 247
0 votes
0 answers
130 views

Windows 10 and OpenSSH to encrypt a local TCP port

I'm working on a Windows 10 machine. I wrote 2 apps: server and client. Both of them communicate via standard TCP sockets, no encryption. I installed OpenSSH, no certificates at the moment, just ...
Codeluppi's user avatar
0 votes
0 answers
49 views

send traffic from openvpn to IPIP tunnel

We have a network interface that is open to the Internet. (ens160) We created an ipip tunnel and it was established correctly as expected (we placed 10.10.30.1 <-->10.10.30.2 | mytun) then we ...
mohsen shahbazi's user avatar
0 votes
2 answers
2k views

How to hide origin IP of SMTP server by tunneling/proxying incoming port 25 traffic to real mail server

We have most of our stuff behind Cloudflare. However, some services such as mail (ex: mail.mydomain.com MX record) cannot be pushed through cloudflare and they expose our mail server's IP which makes ...
user3630380's user avatar
0 votes
0 answers
241 views

Configuring a VPN using Policy Routing on Zorin (Ubuntu 20.04)

A bit stuck here. Semi familiar with routing and semi familiar with linux. Just enough to be dangerous but apparently not enough to be dangerous enough. Hoping someone can point me in the right ...
SureThing's user avatar