CentOS

Complete these steps in order to download the driver bundle: In a web browser, navigate to http://www.cisco.com. Under Support, navigate to Downloads > All Downloads. Click Servers - Unified Computing. Choose UCS M-Series Modular Server Software Click Unified Computing System (UCS) Drivers. Select ...

If you have control of both the client and server, I strongly recommend that you drop the IPSEC-based VPN and use OpenVPN. There are packages for this in the EPEL repo. Configuration is much easier. Issues such as firewall configuration are much simpler. OpenVPN is the best way to solve this issue,...

Check this is it works, https://raymii.org/s/tutorials/IPSEC_L2 ... guring_PPP

you can try this way: # yum install pptp # modprobe nf_conntrack_pptp "Now, we need to add CHAP credentials as provided above into /etc/ppp/chap-secrets file:" # echo 'admin PPTP 00000000 *' >> /etc/ppp/chap-secrets At this stage, using the above VPN connection information we need to create peer VPN...