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"Wanna" ransomware outbreak. Please see this Sophos article sophos.com/kb/126733 for advice on how to protect your organization. Immediate action recommended.
Known to apply to the following Sophos product(s) and version(s)
Sophos UTM Software Appliance
Operating systems V7, V8
Availability Group: A group of hosts and/or DNS hosts sorted by priority. Alive status of all hosts is checked with ICMP pings at a specified interval and the host with the highest priority and an “alive” status is used in configuration.
1. Login to Webadmin on the ASG.
2. Definitions >> Networks and select New network definition
3. Assign a name and select initial host members: Add the group members.
4. Check Interval: Enter a time interval in seconds at which the hosts are ping-checked.
5. Click Save. The new definition appears on the network definition list. To either edit or delete a network definition, click the corresponding buttons.
Availability Group – Reasons for Use. Redundancy:
If one network pipe to the internet fails or connection to a server fails, the backup connection takes over providing minimal impact to network connectivity and services.
Example 1- 2 servers with redundancy: Server A: 126.96.36.199 Server B: 188.8.131.52
When Server A: 184.108.40.206 is "alive" then the ASG will use that IP address for the definition. If Sever A: 220.127.116.11 "dies" or has a connection loss then the ASG will switch to Sever B: 18.104.22.168 causing minimal impact to the network.
Redundancy with vpn: With VPN connections, it’s a similar setup and response as if these were servers in the example. If you have the same 2 servers and both of them is set to accept VPN connections from the ASG, then when the first one fails, the other one will come up again reducing the impact or loss to VPN services.
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