´ëºÎºÐÀÇ »ç¿ëÀÚ¿¡°Ô´Â ¿ÀÁ÷ ÇϳªÀÇ ``tun'' µð¹ÙÀ̽º¸¸(tun0)ÀÌ ÇÊ¿äÇÒ °ÍÀÔ´Ï´Ù. ¸¸¾à Çϳª ÀÌ»óÀ» °¡Áö°í ÀÖ´Ù¸é (´Ù½Ã ¸»ÇØ, Ä¿³Î ¼³Á¤ ÆÄÀÏÀÇ pseudo-device ºÎºÐ¿¡ 1ÀÌ ¾Æ´Ñ ´Ù¸¥ ¼ýÀÚÀÎ °æ¿ì) ¾Æ·¡ ¸ðµç ºÎºÐ¿¡¼ ``tun0''´ë½Å¿¡ »ç¿ëÇÏ´Â ÀåÄ¡ÀÇ ¼ýÀÚ·Î º¯°æÇØ ÁֽʽÿÀ.
tun0 µð¹ÙÀ̽º°¡ Á¦´ë·Î ¼³Ä¡µÇ¾ú´ÂÁö È®ÀÎÇÏ´Â °¡Àå °£´ÜÇÑ ¹æ¹ýÀº ´Ù½Ã ¸¸µå´Â °ÍÀÔ´Ï´Ù. À̸¦ À§ÇØ ´ÙÀ½ÀÇ ¸í·É¾î¸¦ ½ÇÇà½ÃÅ°½Ê½Ã¿À:
# cd /dev
# ./MAKEDEV tun0
Ä¿³Î¿¡´Ù 16°³ÀÇ ÅͳΠµð¹ÙÀ̽º¸¦ ¿ä±¸ÇÏ·Á¸é, tun0 º¸´Ù ´õ ¸¹ÀÌ ¸¸µé ÇÊ¿ä°¡ ÀÖ½À´Ï´Ù:
# cd /dev
# ./MAKEDEV tun15
¶ÇÇÑ, Ä¿³ÎÀÌ Á¦´ë·Î ¼³Á¤µÇ¾úÀ½À» È®½ÅÇÏ·Á¸é, ´ÙÀ½ÀÇ ¸í·É¾î°¡ Á¤ÇØÁø Ãâ·ÂÀ» ÇØÁÖ¾î¾ß ÇÕ´Ï´Ù:
$ ifconfig tun0
tun0: flags=8050<POINTOPOINT,RUNNING,MULTICAST> mtu 1500
$
RUNNING Ç÷¡±×°¡ ¾ÆÁ÷ ¼³Á¤µÇ¾îÀÖÁö ¾ÊÀ» ¼öµµ Àִµ¥, ÀÌ °æ¿ì ´ÙÀ½°ú °°ÀÌ ³ªÅ¸³³´Ï´Ù:
$ ifconfig tun0
tun0: flags=8010<POINTOPOINT,MULTICAST> mtu 1500
$