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IOS升級OPENVPN 3.4.0(5457)後SOPHOS連線異常問題

這陣子IOS升級OPENVPN至3.4.0(5457)後,SOPHOS的VPN忽然不能連線,查了一下果然是SOPHOS的BUG,但之前的OPENVPN版本怎沒問題呢?大概跟新版IOS的OPENVPN安全性更嚴謹有關,很抱歉,如果你有上千台設備,一台一台更新會死人。我的NG防火牆1.5.1版本的OPENVPN設定檔再IOS OPECVPN3.4.0版上連得上但是無法連線內網,目前還沒解決。

https://community.sophos.com/sophos-xg-firewall/f/recommended-reads/142427/sophos-firewall-temporary-fix-openvpn-3-4-0-unsupported-options-error

Temporary Fix

1. Access via SSH the Sophos Firewall

2. Press 5 > 3 in the Main Menu to land in the Advanced Shell

3. Enter the following line: vi /content/sslvpn/client-config-template.ovpn

The above command will open the file called client-configuration-template in the vi editor

4. Press the Down Arrow on your keyboard until you see the pointer is at "route-delay 4.",

5. Press the letter "i" on your keyboard to enter INSERT mode in vi, and press the semicolon symbol (;) on your keyboard

6. Press the key ESC on your keyboard followed by 😡 or:wq (you should see the :X On the left bottom corner of your screen (Advanced Shell)

After this change, ask the user to access the User Portal to re-download the configuration, and the user won’t be presented with the Unsupported Options error when trying to connect.

Note: This won’t survive a Firmware update, so you’ll need to re-enter the commands after doing a Firmware Upgrade

Note: Sophos is aware of this error and plans to work on fixing this in the upcoming v19.5MR4 and v20.0MR1.

For UTM Firewall, kindly check the the following link:

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