Questions tagged [tap]

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How to migrate OpenVPN architecture TAP to TUN

I did a tunnel system with OpenVPN to let a distant client act like a private network client to access private resources. It uses a client on the private network as a gateway. DistantClient <-> ...
Doubidou's user avatar
  • 131
3 votes
2 answers
459 views

Windows: Send all network traffic from script/app through specific TAP adapter

I have created a script in Node.js to remotely manage a server. To work the script needs to be connected to a VPN. The VPN it needs to connect to is different from the one I want Windows to use. Both ...
Settings Menu Hard to Find's user avatar
2 votes
0 answers
159 views

Is there a tool I can use to test out multiple vpn tunnels in one machine?

I use wget -q -O https://checkmyip.com/csv to determine if I am connected to a VPN but I want to verify multiple VPN tunnels on the same machine. Is there a tool that can allow me to send a command ...
LeanMan's user avatar
  • 181
2 votes
0 answers
718 views

Tap interface is not receiving packets

I'm configuring a tap interface and trying to send and receive packets through it, i configure it like this: ip tuntap add name tap0 mode tap multi_queue ip link set tap0 up i'm using scapy to send ...
Kareem Khaleel's user avatar
2 votes
1 answer
3k views

Openvpn limit bandwidth

I would like to ask you a question concerning openvpn and the possibility to increase the bandwidth in case I want to transfer files. I have an openvpn server via which I connect to my data center. ...
user200913's user avatar
1 vote
0 answers
212 views

Advice required for sending STP BPDU traffic between tap interfaces connected by common bridge

Need advice for the bridge tap interface to run stp traffic. created the tap interface and bridge   Have come across stp BPDU is consumed by bridge. i'm running the scapy on the host, however i'm not ...
Santosh Kumar's user avatar
1 vote
1 answer
1k views

two tap device connect each other in same pc

What I want to implentent is something like below. 192.168.1.1 192.168.1.2 +--------+ +----------+ +-----------+ +---------+ ...
randomeval's user avatar
1 vote
1 answer
5k views

Host to guest connection via SSH (using qemu vm)

I am having trouble to enable a host-to-guest communication using qemu VMs. The goal is to connect via SSH from the host to the guest VM. I have the following setting: host: local access to SSH ...
Zee Age's user avatar
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1 vote
0 answers
60 views

Create 3 virtual interfaces that can ping6 each other

In Linux, how can you create 3 virtual interfaces that are bridged together through a virtual switch so that they can ping6 each other? What I did: tunctl -t tap1i tunctl -t tap2i tunctl -t tap3i ip ...
capr's user avatar
  • 231
1 vote
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Can a firewall handle packets being sent to it by a network TAP?

We have the intention of examining incoming mails for security purposes. In order to do so we figured out the solution will include: Network TAP - To copy all SMTP traffic to the firewall Firewall - ...
tripst0r's user avatar
1 vote
0 answers
203 views

OpenVPN TAP binding order issue

I am running a 64bit Windows 7/8 AD environment using OpenVPN on remote computers to access our network/servers in our main office. Typically, once we install OpenVPN on a new machine and configure ...
Rich's user avatar
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1 vote
0 answers
616 views

TUN/TAP VPN no internet connection

I have set up a tun/tap vpn to a VPS. For this, I created a 10/24 network and gave the server the IP 10.0.0.100 and my client got 10.0.0.200. I can now successfully ping the server / access my mail ...
Nick's user avatar
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0 answers
87 views

I cannot see my OpenVPN TAP adapters in Hyper-V external switch bridging

I cannot see my OpenVPN TAP adapters in Hyper-V external switch bridging. Is it even supported in Hyper-V? I do not see any documentation where it says it is either supported or not. I have Windows 11 ...
falhumai96's user avatar
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0 answers
49 views

Configure network stack to consume data from TAP device, so that application can operate as if the data was intended to it

I have two devices communicating, A and B over udp. In between there is a tap device, where C is connected. In order for C to be able to receive the traffic it needs to set the same ip and mac address ...
Aleksandarf's user avatar
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63 views

Redirect traffic in "sniff/tap?" mode to specific ip address(es), that is: rewrite destination headers to target other machine(s)

I have incoming traffic on eth1 (vlan id 201) which is emitted by another machine which is doing sudo tcpreplay -x 0.01 --loop=0 --intf1=eth12 Wireshark_bidirectional_data.pcap I would like to ...
Aleksandarf's user avatar
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99 views

Does Linux tap interface support tcp segmentation on ipip network traffic

Recently I experienced an issue on running kubernetes slaves on a VM with calico ipip tunnel as the network connection protocol to interconnect the kubernetes nodes. The current symptom (with the ...
lordofire's user avatar
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0 answers
275 views

Creating a TAP network device in GCP VM

I am trying to create a QEMU VM within a GCP VM. I want the QEMU VM to use TAP network device to communicate with the host and external world. My desired set up looks like below. +-----------------...
onlygo's user avatar
  • 101
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0 answers
58 views

server remot access using VPN FW - TUN vs TAP

I'm trying to improve my home Firewall set up and I'm trying to figure out the best VPN configuration. GOAL: In order to reduce the open ports of my home webserver I thought to use SSH and webmin ...
gipsea's user avatar
  • 1
0 votes
1 answer
178 views

is a tap interface on linux vulnerable to snooping attacks

If you have multiple VM's on a Linux host machine, and use a single tap interface on that host machine, is that network vulnerable to spoofing/mac spoofing attacks like a normal Ethernet network would ...
Tom Ribbens's user avatar
0 votes
2 answers
174 views

Gentoo hangs when adding main interface to the bridge

I've VPS on WEDOS serverhosting, Gentoo there. 5.4.38 kernel. I've a network interface eth0, I need to bridge it with another one (from openvpn). Starting with adding only one interface: brctl addbr ...
aikipooh's user avatar
  • 103
0 votes
1 answer
1k views

Two tap device can't communicate over bridge

I want to exchange Ethernet Packet between two tap device(for implementing TCP/IP protocol stack in usermode). The problem I encountered is that tap1 and tap2 only can receive broadcast packet through ...
Miracle's user avatar
0 votes
0 answers
2k views

ARP Reply is not forwarded to TAP device through Linux Bridge

Create two TAP devices, each of which will be read and written by the userland protocol stack. In addition, the two TAP devices are bridged by the Linux Bridge. The script to prepare the environment ...
Shikugawa's user avatar
0 votes
1 answer
2k views

How to enable external access to the Virtual machine on private link?

I would like to benchmark virtual networking of KVM-QEMU. For this purpose, I connect two servers (server 1, and server 2) with one wire. I use server 1 to run the QEMU VM and I want to access this VM ...
Mehrshad's user avatar
  • 103
0 votes
0 answers
1k views

Attach a VM to a host TAP or TUN device

I'm working on a project whilst in lockdown in England, and I am hoping someone can offer some advice? I have a machine with 5 physical eth interfaces on Linux Mint, 20.04. All eth interfaces ...
Bon's user avatar
  • 1
0 votes
0 answers
724 views

macvtap interface associated with a VM on a host cannot ping host eno1 IP

VM interface XML config has source device pointing to the host management interface eno1 that is configured with IP of 10.134.159.48/24 When the VM is launched a macvtap interface gets created for ...
lakshmi bangalore's user avatar
0 votes
0 answers
1k views

OpenVPN TAP without bridging

I'm trying to make use of my VPS as OpenVPN server for "LAN" gaming which involves broadcasts, so I need to configure TAP. Typically, when I look up some examples of tap configuration, it uses ...
Palo's user avatar
  • 1
0 votes
0 answers
78 views

Understand linux bridge tunneling configuration

I have a VPN software that creates a tap device connected to a bridge: $ brctl show vpnbr bridge name bridge id STP enabled interfaces vpnbr 8000.6630fabc3f2b yes tnl-2c5a50e $ ...
alnet's user avatar
  • 128
0 votes
1 answer
1k views

OpenVPN server with two tap interfaces, how to allow tap0 to see tap1

I'm new to OpenVPN but have managed to install it on an Ubuntu machine. The requirement is to allow Mikrotik and then laptop clients to connect to the VPN. I managed to make this work by running two ...
Leon Vismer's user avatar
0 votes
1 answer
859 views

SSH TAP tunnel & multicast groups

Is it possible to do UDP multicasting over an SSH TAP tunnel? I have set up a TAP tunnel using SSH between my Ubuntu PC and a Raspberry Pi sitting in a remote office, using this command: $ ssh -o ...
Tom's user avatar
  • 327
0 votes
1 answer
1k views

How to set up single client TAP/TUN on the client for my OpenVPN?

My laptop OpenVPN client establishes a TAP device. My client config is TUN, though. This devices shows under ifconfig /ALL with the IP 10.8.0.6 and a subnetmask of 255.255.255.252. (!!!) This ...
bomben's user avatar
  • 115
0 votes
1 answer
508 views

OpenVPN TAP network

I have a question about the OpenVPN in TAP configuration. I want to access local resources through VPN connection from outside network. I think I need TAP configuration, because I want to send ...
Peef's user avatar
  • 1
0 votes
1 answer
2k views

Multiple TAP devices on OpenVPN Server

So we have a number of clients that have their own VPS instances which we host via Proxmox. The clients servers are all behind a NAT firewall and we forward ports per client request to our various ...
TriadicTech's user avatar
0 votes
0 answers
94 views

OpenVPN tunnel not able to support secure connect request

In CentOS 7 host we have installed openvpn package and did create an tunnel using OpenVPN tunneling for eth9 and tap9. Everthing work fine for unsecure connection but when we try to connect to server ...
Abhinav's user avatar
  • 225
0 votes
1 answer
663 views

Openvpn, two tap network adapters

I have installed openvpn client on my pc (windows 7) and I have two tap network adapters. In this way I can open two openvpn connections at the same time. What I would like to understand is how it's ...
user200913's user avatar
0 votes
0 answers
702 views

pfSense LAN network unable to communicate with remote network on OpenVPN TAP connection

I set up pfSense to connect to a remote network (192.168.122.0/24) that only accepts tap connections. The connection is being initiated successfully. pfSense (192.168.1.1/24) itself can connect to ...
user569825's user avatar
0 votes
0 answers
87 views

Setup PERMANENT TAP adapter in VPS without dissapear after reboot

I'm installing Softether in a new VPS and all works fine. System is a CentOS 6.5 32bit. The issue is that after rebooting the VPS the TAP adapter dissapear. I would like to know if I can define ...
KeyJey's user avatar
  • 11
0 votes
1 answer
3k views

Tap interface within a virtual machine has NO-CARRIER

I am trying to hook up a virtual machine to a host using openvpn. When i create a tap interface within the virtual machine using: /usr/sbin/openvpn --mktun --dev tap1 The state of the tap interface ...
NetCubist's user avatar
0 votes
1 answer
2k views

What is th tap100i0 device on my debian with KVM?

I want configure a network for virtual machines on KVM. I created a bridge. But I found a new tap100i0 devise was created. Should I take it into account to get the virtual network running?
static's user avatar
  • 351
-1 votes
2 answers
290 views

VPN with authentication/encryption with separate tap interface for each client

is there any VPN program that handles client authentication, data encryption and ends in a tap interface for every authenticated client? I need 1 shared UDP port (VPN service port) to which clients ...
Filip Svoboda's user avatar