https://soooprmx.com/20090925-%eb%a6%ac%eb%88%85%ec%8a%a4%ec%97%90%ec%84%9c-nortel-vpn-%ec%a0%91%ec%86%8d%ed%95%98%ea%b8%b0/
20090925 :: 리눅스에서 nortel vpn 접속하기