Sonicwall GVC VPN: Unable to connect to VPN. Error: “Packet length mismatch with interface MTU”

I had a client who was unable to connect to the Sonicwall VPN via GVC (Global VPN Client). Packet capture showed initial inbound traffic to the Sonicwall from Client is being dropped. Logs as below: 50 03/30/2016 14:16:06.912 X4*(i) -- VPN.CLIENT.IP.HERE SONICWALL.WAN.IP.HERE IP UDP 500,500 DROPPED 60[60] 51 03/30/2016 14:16:06.912 X4*(i) -- VPN.CLIENT.IP.HERE SONICWALL.WAN.IP.HERE IP … Continue reading Sonicwall GVC VPN: Unable to connect to VPN. Error: “Packet length mismatch with interface MTU”

Sonicwall Global VPN Client: Sonicwall GVC unable to connect through certain ISPs

In some cases, Sonicwall GVC is unable to connect to select ISPs/Networks, where it is proven working elsewhere (3G Tethering or other ISPs). Usual troubleshooting and things to look at is if VPN IPSec Passthrough is enabled on the home modem or router. There is another troubleshooting step that is worth trying, which is to … Continue reading Sonicwall Global VPN Client: Sonicwall GVC unable to connect through certain ISPs

Tricks: Unable to access Sonicwall Management Portal? ERR_SSL_VERSION_OR_CIPHER_MISMATCH

Most modern web browser no longer support RC4 encrytion as it is officially declared unsecured by IETF memo RFC7465 published on February 2015. (See Workaround below to find an older browser to get around this error) Thus if RC4-Only encryption is enabled in SonicOS, it would block access to the Firewall Management Portal and will display "err_ssl_version_or_cipher_mismatch" error … Continue reading Tricks: Unable to access Sonicwall Management Portal? ERR_SSL_VERSION_OR_CIPHER_MISMATCH

Wireless Penetration Testing Checklist – A Detailed Cheat sheet

I found one interesting page for those interested in pentesting and in cybersecurity space. A checklist on toolset you will need to https://gbhackers.com/wireless-penetration-testing-checklist-a-detailed-cheat-sheet/ Credits to Balaji N of gbhackers and Cheers to Priya James for sharing this one. What is wireless Penetration Testing Wireless Penetration testing is the Actively Examine the Process of Information security … Continue reading Wireless Penetration Testing Checklist – A Detailed Cheat sheet