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Huy Đỗ
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OpenVPN with OTP one time password by google authenticator working all the time part 4
<< Back to part 3 << 5. Testing with pamtester : We will need a tool named pamtester to debug when working with pam modules. # yum install pamtester By default, linux PAM package installed with lot of services : # ls /etc/pam.d/ chfn  fingerprint-auth  pass...

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OpenVPN with OTP one time password by google authenticator working all the time part 3
<< Back to part 2 << 4. Install google authenticator PAM module  We need to install pam-devel package to rebuild the google lib PAM module. # yum install pam-devel Follow up : http://code.google.com/p/google-authenticator/ to download libpam-google-authenti...

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OpenVPN with OTP one time password by google authenticator working all the time part 2
<< Back to part 1 << 3. Create user (Alice) certificate for authentication : Generate Alice private key # openssl genrsa -out alice.key 2048 Generate Alice certificate request Notice : the common name (CN) should match the username =  alice # openssl req -o...

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openVPN with OTP one time password by google authenticator working all the time
So why OpenVPN but not l2tp or pptp or ipsec ? The good thing : - It can be run at tcp:80 or tcp:443. No more worry about firewall or behind NAT. - Also can be used with http proxied. - SSLv3 + PKI Cert Authentication. - Totally free. - Multiple platforms s...

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Boot cdrom iso image from http server
Up coming to boot winxp from http server , now we will take GPXE to boot an iso disc image through http protocol. This time I tried with an Hiren BootCD iso image - a very famous and popular All-in-One BootCD. It takes about less than 30 seconds to load and...
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