In the world of network security, SSL VPNs are a cornerstone of secure remote access. For a long time, network administrators managed SSL VPNs on Cisco devices using both the **IOS** and **ASA** platforms. However, the process for configuring these services has evolved significantly, particularly with the improvements introduced in **ASA version 9.7**. This blog explores the differences between the "old way" of configuring SSL VPNs on ASA and the streamlined approach available post-ASA 9.7.
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#### **Old Way: ASA SSL VPN Configuration Before ASA 9.7**
Prior to ASA version 9.7, configuring SSL VPNs required a more granular approach, often mirroring the complexity found in **Cisco IOS**. Here’s a breakdown of the older process:
1. **Use of Gateways and Contexts:**
- SSL VPN setups often involved configuring **gateways** and **contexts** to define the entry points and the environments for the remote users.
- Each gateway would require explicit mapping to a context, adding an additional layer of configuration.
2. **Configuration Spread Across Multiple Modes:**
- Administrators had to navigate between different configuration modes (such as global configuration, webvpn mode, and tunnel-group settings) to complete the setup.
- Key elements like user group policies, attributes, and connection profiles were managed separately, requiring careful coordination.
3. **Manual Association of Policies:**
- Group policies, which control user-specific settings, needed to be associated manually with tunnel groups.
- This approach, while powerful, often left room for misconfigurations due to the fragmented structure.
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#### **New Way: ASA SSL VPN Post 9.7**
With the release of ASA version 9.7, Cisco introduced a much simpler and more unified approach to configuring SSL VPNs. The goal was to reduce the complexity and streamline the setup for administrators while maintaining robust functionality. Here’s how the new process compares:
1. **Unified “webvpn” Configuration Mode:**
- The **webvpn** configuration mode serves as a central point for defining all SSL VPN settings.
- Administrators can directly configure most aspects of the VPN within this mode, without jumping across multiple sections.
webvpn
enable outside
anyconnect image disk0:/anyconnect-linux.pkg 1
anyconnect enable
tunnel-group-list enable
2. **Simplified Group Policy Association:**
- Group policies can be defined and directly tied to the connection profile in a much cleaner way.
- Instead of managing gateways and contexts, group policies now encapsulate all user properties such as split-tunneling, DNS settings, and client settings.
group-policy VPNUsers internal
group-policy VPNUsers attributes
split-tunnel-policy tunnelspecified
split-tunnel-network-list value SplitTunnelList
3. **AnyConnect Integration Made Easier:**
- The integration of the Cisco AnyConnect Secure Mobility Client is more seamless. Post-9.7 configurations prioritize ease of deployment for AnyConnect, reducing the manual steps needed to upload and enable client images.
4. **Deprecation of Gateways and Contexts:**
- The introduction of a more intuitive SSL VPN configuration eliminates the need for defining gateways and contexts, making the configuration leaner and more straightforward.
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#### **Why the Change Matters**
The post-ASA 9.7 approach represents a significant step forward in usability for several reasons:
- **Time Savings:** Administrators save valuable time by working within a unified configuration mode, eliminating redundant steps.
- **Reduced Errors:** A simplified setup reduces the risk of misconfigurations, improving overall system reliability.
- **Scalability:** The streamlined process makes it easier to scale configurations for large organizations with numerous user groups and policies.
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#### **Final Thoughts**
The evolution of SSL VPN configuration on Cisco ASA devices, particularly after version 9.7, underscores Cisco’s commitment to improving usability without sacrificing functionality. For administrators familiar with the “old way,” the new streamlined process is a breath of fresh air.
Whether you're configuring SSL VPNs for the first time or transitioning from an older setup, adopting the post-9.7 approach will save time, reduce errors, and ensure a smoother experience for both administrators and end-users.
Do you still rely on older configurations? It might be time to explore the simplified post-9.7 process to make your network management more efficient. Let us know your experiences in the comments below!
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