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Questions tagged [tap]

93 questions
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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 on secure port i.e. 443 or so using openssl we…
Abhinav
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how to connect/bridge two interfaces on different processes

I have two processes A and B (simulating real hardware device), each with their own TAP interfaces. If I want to send an ethernet packet to A, I send it on interfaceA, and similarly if I want to send a packet to B, I send it to interfaceB. I'd like…
brainydexter
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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 decided each connection I open which tap adapter…
user200913
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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 remote hosts: pfsense# traceroute -n…
user569825
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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 permanently a TAP NIC adapter with a fixed…
KeyJey
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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 is always "NO-CARRIER" 1: lo:…
NetCubist
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Unbridged tap device

Good UTC evening! I've created a tap0 device on my host, it looks like: tap0: flags=4099 mtu 1500 inet 10.0.0.1 netmask 255.255.255.0 broadcast 10.0.0.255 ether 92:80:f9:b0:1e:fd txqueuelen 500 …
aikipooh
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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
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./pox.py log.level --DEBUG forwarding.l2_learning not working as expected

I have installed openvswitch on my PC with runs Ubuntu 12.04.I also have virtual box running on my PC with 3 virtual machines (Ubuntu 12.04) running on them. are named vm-1 vm-2 vm-3 I have configured the openvswitch on the Host as follows. sudo…
liv2hak
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Is there a way to allow specific permissions to a non-root user?

I have a program that, at some point, create/destroys tun/tap virtual adapters. Obviously, for these specific operations this program requires root privileges. According to the program specifications, root privileges are dropped as soon as they are…
ereOn
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Where is the userspace used by TUN/TAP?

When I put data on a wire in qemu what sets the upper limit on the rate of data I can transmit? The situation is I set up two machines A and B create two tap interfaces openvpn --mktun --dev tap0 --user `id -un` openvpn --mktun --dev…
Dave
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OpenVPN not acquiring IP on mac client

I have an interesting problem. I can confirm that the OpenVPN server is working because I can connect successfully on other Windows machines. On my personal mac laptop though I can connect but the workstation never receives an ip from the server. I…
Dobler
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how does openvpn decide which interface to get IP addrs from

Using ubuntu 10.04 on both ends. We have a client and server machine on the SAME network attempting to make a vpn connection. We use the config files from here and made minimal changes. The server and client start and seem to connect without any…
bkrupa
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OpenVPN bridging with venet interfaces

I have a VPS which uses venet interfaces for its (virtual) ethernet connections. I've managed to get an OpenVPN daemon running with tunneling, but not able to do so with bridging (tap). Is it possible to use bridging with a virtual server using…
cudiaco
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Dynamips and Tap Devices, To and From the same machine

I am setting up a dynamips/dynagen lab and am wondering if there is any way to get traffic to route out one tap devices, go into the lab, and come back to a tap device on the same machine. I have tried host specific routes as well as removing the…
Kyle Brandt
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