update page description for the 'VPN' setup

- Cloudflare access
- Netfilter
- secure tunneling
- dynamic port forwarding

content/Networking Concepts/Dynamic Port Forwarding.md

@@ -6,10 +6,10 @@ Author Profile:
 tags:
   - networking
 Creation Date: 2024-04-18, 23:01
-Last Date: 2024-05-02T00:12:28+08:00
+Last Date: 2024-11-22T16:40:16+08:00
 References: 
 draft: 
-description: Use SSH as 'VPN'
+description: Use SSH as a 'VPN'. SSH dynamic port forwarding allows you to bypass network restrictions by turning an SSH server into a SOCKS proxy. This lets your client machine access websites or services through an intermediate server, even if they are blocked by your local network firewall.
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 ## Abstract
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content/Networking Concepts/Secure Tunneling.md

@@ -10,10 +10,10 @@ tags:
   - macos
   - ngrok
 Creation Date: 2024-02-23, 23:49
-Last Date: 2024-04-24T01:53:03+08:00
+Last Date: 2024-11-22T16:39:27+08:00
 References: 
 draft: 
-description: 
+description: Secure tunneling allows you to securely access services running on your local machine from the public internet without needing a public IP address or port forwarding, using tools like Cloudflare Tunnel or Ngrok. This is achieved by creating an encrypted connection between your local machine and a server in the public network, which acts as a reverse proxy and forwards traffic to your local service.
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 ## Abstract
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content/Networking MISC/Netfilter.md

@@ -6,10 +6,10 @@ Author Profile:
 tags:
   - networking
 Creation Date: 2024-10-02, 15:10
-Last Date: 2024-10-04T18:17:03+08:00
+Last Date: 2024-11-22T16:41:21+08:00
 References: 
 draft: 
-description: 
+description: Netfilter, the Linux kernel's packet processing system, allows you to manipulate network traffic using iptables. This can be used to implement kernel-level load balancing and reverse proxy functionality, potentially offering performance advantages over traditional software-based solutions.
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 ## Abstract
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content/Security/Authentication/Cloudflare Access.md

@@ -7,10 +7,10 @@ tags:
   - cloudflare
   - security
 Creation Date: 2024-02-29, 22:22
-Last Date: 2024-05-30T10:32:23+08:00
+Last Date: 2024-11-22T16:39:10+08:00
 References: 
 draft: 
-description: 
+description: Cloudflare Access is a security service that allows you to control access to your applications based on user identity, network, and device posture. It offers temporary authentication for users who need one-time access, requiring administrator approval, while also allowing you to define users with persistent access through policies.
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 ## Abstract
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