Closing the Gaps: My CCIE Study Roadmap

Over the past couple of weeks, I have been reading through Integrated Security Technologies and Solutions, Volumes I and II. At my current pace, I expect to finish Volume II within the next few days at around 50 hours of time invested since I picked things back up at the beginning of October – at…… Continue reading Closing the Gaps: My CCIE Study Roadmap

eBGP Multihop vs. eBGP TTL-Security

The following is a really great article by Jon Langemak examining the differences in router behavior when using eBGP multihop vs. eBGP ttl-security. http://www.dasblinkenlichten.com/ebgp-multihop-vs-ttl-security/ Check it out, it is well worth the read. By default, eBGP packets are sent with a TTL = 1, because we assume a directly-connected peer. If the peer is a…… Continue reading eBGP Multihop vs. eBGP TTL-Security

Cisco IOS Route-Based VPN with IKEv1 PSK GREoIPsec and EIGRP

This article will look at a basic configuration for a route-based VPN between two Cisco IOS routers, using IKEv1 and IPsec for tunnel protection, and EIGRP for dynamic route advertisements based on the above topology. Workflow: Verify basic routing and reachabilityCreate and configure: LAN networksTunnel interfaceEIGRP processVerify basic GRE tunnel status and reachabilityCreate and configure:…… Continue reading Cisco IOS Route-Based VPN with IKEv1 PSK GREoIPsec and EIGRP

Basic AnyConnect on Azure-hosted Meraki vMX

In this article, we’ll take a look at deploying a Meraki Virtual MX (vMX) in Microsoft Azure, and enabling a basic AnyConnect configuration on it for remote access VPN. This configuration includes a couple of specific steps required on the Azure side in order to properly allow inbound Anyconnect traffic to the vMX. Additional configurations…… Continue reading Basic AnyConnect on Azure-hosted Meraki vMX

Duo MFA for the ISE Admin GUI

So, you’ve adopted ISE: 802.1x everywhere, maybe some CTS/SDA, posture for remote VPN endpoints, even dabbling with Threat-Centric NAC and some pxGrid integrations – life is good! The network feels secure, you’ve got lots of visibility and control. SASE and ZTA feel like attainable goals. Then, it hits you: you’ve put MFA in front of…… Continue reading Duo MFA for the ISE Admin GUI

Location, location, location: Segmenting FlexConnect Authentications in ISE Without Overriding WLC Central-Auth

One of the foundational steps when configuring your Network Access Devices (NADs) in ISE is adding the NADs to relevant Network Device Groups (NDGs); NDGs allow you to create a descriptive and hierarchical attribute tree which you can apply to your NADs in order to streamline context visibility, reporting, Policy Set/rule match conditions, or simply…… Continue reading Location, location, location: Segmenting FlexConnect Authentications in ISE Without Overriding WLC Central-Auth

Shutting down the WebVPN Portal on FTD with FlexConfig

The Cisco ASA and FTD have a nice usability feature for client software distribution when running AnyConnect: by default, you can leverage the ASA/FTD itself as the AnyConnect software repository for your end-users. Navigating in a browser to your RAVPN URL will bring up the WebVPN login screen, which allows the end-user to authenticate and…… Continue reading Shutting down the WebVPN Portal on FTD with FlexConfig