Tag Archives: VPN

3 Essential Tips for Enhancing Site-to-Site VPN Security

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Site-to-site VPNs are a crucial tool for securing communication between different network locations. To ensure the utmost security for your VPN connections, consider implementing these three key suggestions:

1. Select Strong Secrets or Secure Certificates

The foundation of any secure site-to-site VPN is the authentication mechanism. Opt for strong pre-shared keys or secure digital certificates when configuring your VPN. Using weak passwords or keys can leave your VPN vulnerable to attacks. Remember, a strong password should be lengthy, complex, and incorporate a mix of letters, numbers, and special characters. Alternatively, employing secure certificates provides an added layer of protection as they are difficult to intercept or guess.

2. Implement Modern, Peer-Reviewed Cryptography

Ensure that your site-to-site VPN employs modern encryption protocols have been rigorously reviewed by the security community. Protocols like IKEv2/IPsec are popular choices that offer robust encryption and authentication mechanisms. Peer-reviewed cryptography guarantees that the algorithms have undergone extensive scrutiny and are less likely to contain vulnerabilities or backdoors. Currently, AES is the suggested cryptographic mechanism for most VPNs. DES and 3DES should be eliminated wherever possible.

3. Create Proper Firewall Rules or ACLs

Managing traffic over your VPN connection is essential for maintaining a secure network environment. Utilize firewall rules or Access Control Lists (ACLs) to carefully regulate data flow between connected sites. You can prevent unauthorized access and potential breaches by explicitly defining what types of traffic are permitted and denied. Regularly review and update these rules to adapt to changing security requirements.

In Conclusion

Enhancing your site-to-site VPN’s security involves strong authentication, robust encryption, and intelligent traffic management. By selecting strong secrets or certificates, implementing modern cryptography, and creating well-defined firewall rules, you can significantly bolster the security of your VPN connections. Securing your network is an ongoing process, so staying updated on the latest security practices and adapting your configurations is essential.

Implement these tips today to build a resilient and secure site-to-site VPN that safeguards sensitive data and ensures seamless communication between your network locations.

 

* Just to let you know, we used some AI tools to gather the information for this article, and we polished it up with Grammarly to make sure it reads just right!

 

The Mixed Up World of Hola VPN

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Have you heard about, or maybe you use, the “free” services of Hola VPN?

This is, of course, a VPN, in that it routes your traffic over a “protected” network, provides some level of privacy to users and can be used to skirt IP address focused restrictions, such as those imposed by streaming media systems and television suppliers. There are a ton of these out there, but Hola is interesting for another reason.

That other reason is that it turns the client machine into “exit nodes” for a paid service offering by the company:

In May 2015, Hola came under criticism from 8chan founder Frederick Brennan after the site was reportedly attacked by exploiting the Hola network, as confirmed by Hola founder Ofer Vilenski. After Brennan emailed the company, Hola modified its FAQ to include a notice that its users are acting as exit nodes for paid users of Hola’s sister service Luminati. “Adios, Hola!”, a website created by nine security researchers and promoted across 8chan, states: “Hola is harmful to the internet as a whole, and to its users in particular. You might know it as a free VPN or “unblocker”, but in reality it operates like a poorly secured botnet – with serious consequences.”[23]

In this case, you may be getting a whole lot more than you bargained for when you grab and use this “free” VPN client. As always, your paranoia should vary and you should carefully monitor any new software or tools you download – since they may not play nice, be what you thought, or be outright malicious. 

I point this whole debacle out, just to remind you, “free” does not always mean without a cost. If you don’t see a product, you are likely THE PRODUCT… Just something to keep in mind as you wander the web… 

Until next time, stay safe out there!

The iPad as a VPN Client

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Today was my first real chance to try out the iPad as a VPN client in a critical situation. I needed an essential file for a client in a real hurry. We were about 50 miles from the office and a physical return with the file wasn’t possible. Even worse, it was stored on an encrypted vault volume on my personal backup system, so none of my engineers could assist me, since they lack credentials for that box.
Thankfully, I had my iPad with me. I had already set up a VPN connection for my device, but hadn’t yet tested it. The good news is that it worked perfectly! I was able to quickly create a VPN tunnel back to my network and then SSH into my vault. Once there, I could effortlessly arrange for a file transfer to my client in a secure manner. I even piped a VNC connection over the tunnel using iTeleport and could interact with the GUI nearly as easily as on a laptop.
All in all, it was a great save and made an excellent real world use case for the iPad in my work flow. Have you had any other big successes with the iPad in your security work? If so, drop a comment and tell us about it. I look forward to reading about it!