Dec 13, 2012 · Hi, the only way I could let OpenVPN run as it should was to disable firewall completely on the TUN/TAP adapter. If not, even thought access to the vpn was ok from the client to the vpn network, no access was enabled to the client by the vpn networl, because windows firewall was blocking any access to the "considered public and unidentified
OpenVPN – Taktikalnetwork.com Go to the Services menu and the OpenVPN submenu. OpenVPN Server Type : Tun vs TAP. There are two different types of OpenVPN servers, each with their own type of client, called TUN and TAP. There are advantages and disadvantages to using each one of these types of servers. TUN is a routed VPN while TAP is a bridged VPN. Comparing tun mode to tap mode - Mastering OpenVPN As we have seen so far in this chapter, there are many similarities, but also some significant differences between a tun-style VPN and a tap-style VPN. In this section, we will discuss those similarities and differences. Most of the differences stem from the single fact that a tun-style VPN is a non-broadcast, point-to-point IP-only network, whereas a tap-style network provides a fully virtual
tun-mtu 1400 mssfix 1360. In the most common case, MTU on the physical interface is 1500, so it is better to set OpenVPN TUN MTU to a value lower than the real MTU, and MSSFIX to MTU-40, as in the example above. I hope this article was helpful for you. Share your speed results if you saw a significant improvement (via habr).
Jun 20, 2009 · Package: openvpn Version: 2.1~rc11-1 Severity: normal Sample entry from /var/log/syslog: Jun 20 19:13:11 tardis ovpn-nivexlan: write to TUN/TAP : Invalid argument (code=22) This mesage is logged once every minute since upgrading from etch to lenny. The tunnel is up and functioning, but it does make the logs a bit messy. May 29, 2011 · OpenVPN Tun/Tap error: Penn: Linux - Server: 5: 10-14-2010 02:35 PM: nm-openvpn write to TUN/TAP : Invalid argument (code=22) jonaskellens: Linux - Newbie: 0: 08-24-2009 03:49 AM: OpenVPN - tun - tap - tunnels: leamassiot: Linux - Networking: 40: 08-12-2009 09:36 AM: Need help on TUN/TAP: vinodl: Linux - Networking: 1: 06-22-2009 11:18 AM: Tun
tun vs tap? - OpenVPN Support Forum 2013-2-23