On Mon, Mar 1, 2010 at 3:15 PM, Tata Dano <[email protected]> wrote:
>
> Mon Mar 1 00:03:12 2010 Note: Cannot open TUN/TAP dev /dev/net/tun:
> Permission denied (errno=13)
hi,
i downloaded openvpn version 2.1.1 today and check your error
above.... error above can be found at openvpndir/tun.c line 1106... it
attempts to open /dev/net/tun in read/write access mode (O_RDWR)..
according to /usr/include/asm/errno.h, error number 13 is EACCES...
looking at "man 2 open", it says:
EACCES The requested access to the file is not allowed, or one of the
directories in pathname did not allow search (execute) permis-
sion, or the file did not exist yet and write access to the
parent directory is not allowed.
things to do on your side...
1. make sure /dev/net/tun file is existing.. if not instruction can be
found inside INSTALL file as root account...
TUN/TAP Driver Configuration:
* Linux 2.4 or higher (with integrated TUN/TAP driver):
(1) make device node: mknod /dev/net/tun c 10 200
(2a) add to /etc/modules.conf: alias char-major-10-200 tun
(2b) load driver: modprobe tun
(3) enable routing: echo 1 > /proc/sys/net/ipv4/ip_forward
Note that either of steps (2a) or (2b) is sufficient. While (2a)
only needs to be done once per install, (2b) needs to be done once
per reboot. If you install from RPM (see above) and use the
openvpn.init script, these steps are taken care of for you.
2. check the path and file permission of /dev/net/tun... a quick check
by doing the commands as normal user below:
$ cd /dev/net
$ ls -al tun
crw------- 1 root root 10, 200 Mar 2 15:51 tun
normally it owns by root.. you need to run openvpn as root and make
sure that your server configuration file change its daemon's privilege
to user nobody and group nobody for security reason..
> One more inquiry, is it possible to connect openvpn on windows machine
> without any
> additional installation of openvpn client? If so, then how can this be done?
nope...it cant be done... microsoft's built-in vpn clients are pptp
and l2tp/ipsec only as openvpn is a ssl vpn which is not compatible to
those two...
fooler.
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