This will walk you through setting up an Ipsec VPN between 2 networks using 2 hosts using strongswan to build the tunnel. This was my go to solution to connect Amazon AWS VPCs across regions… that is until AWS allowed peering VPCs across regions in December of 2018. So connecting… Continue reading
This is a working strongswan ipsec config that can be used for a roadwarrior setup for remote users utilizing certificate based authentication instead of id/pw. This is a pure IPSEC with ESP setup, not L2tp. This is not 2 factor, it is cert only. To get started: sudo apt-get install… Continue reading
Openswan 2.6.37 Symptom: OpenSwan to Cisco ASA Site to Site Tunnel has one way traffic. Description: The Ipsec Tunnel builds, both the openswan host and the ASA show the tunnel up but traffic only flows from the ASA into Openswan, traffic does not flow back from openswan. No errors were… Continue reading
Having an L2TP/IPSEC VPN comes in very handy if you have a Macbook, iOS device, or run Stock Android and want to be able to remotely access your network from on the road. L2TP over IPSEC is a better choice than PPTP which is now considered insecure. Plus L2TP/IPSEC is… Continue reading
I was asked to manually load a Certificate Revocation List (CRL) from an MS Server 2008 R2 Certificate Server to a F5 BIPIP appliance for use when authenticating client certificates. Having a CRL loaded as a local file into the BIGIP is probably the easiest way to get it to… Continue reading
In a recent post, we did a step by step on installing OpenVPN to an Ubuntu server 12.04. https://www.slsmk.com/installing-openvpn-on-ubuntu-server-12-04/ The default install used certificate based authentication for the client. So if the client has the proper files, it can connect to the server. So lets say you want to use… Continue reading
Mike's Guides to Learning Boto3 Volume 1: Amazon AWS Connectivity and Basic VPC Networking
Mike's Guides to Learning Boto3 Volume 2: AWS S3 Storage: Buckets, Files, Management, and Security
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