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#*'''Security rules cannot be edited''', they can only be deleted and re-added.So if you make a mistake when creating a security group rule you need to delete it using the ''Delete Rule'' button on the far left of the row for that rule in the security groups screen, and then re-add it correctly from scratch using the ''+Add Rule'' button. | #*'''Security rules cannot be edited''', they can only be deleted and re-added.So if you make a mistake when creating a security group rule you need to delete it using the ''Delete Rule'' button on the far left of the row for that rule in the security groups screen, and then re-add it correctly from scratch using the ''+Add Rule'' button. | ||
#*If you change your network location (and therefore your IP address) then you need to add the security rule described in this section for that new IP address. Remember that when you change your physical location (example working on-campus vs working from home) you are changing your network location. | #*If you change your network location (and therefore your IP address) then you need to add the security rule described in this section for that new IP address. Remember that when you change your physical location (example working on-campus vs working from home) you are changing your network location. | ||
#*If you do not have a static IP address for the network you are using remember that it can sometimes change, so if you can no longer connect to your VM after a period of time sometimes it's worth checking to see if your IP address has changed. You can do this by putting [http://ipv4.icanhazip.com ipv4.icanhazip.com] in your browser and seeing if it matches what you have in your security rule. If your IP address changes frequently, but the left-most numbers always stay the same, it could make more sense to add a range of IP addresses rather than frequently modifying your security rules. Use [https://www.ipaddressguide.com/cidr this tool] for determining a CIDR IP range from an IP range or learn more about CIDR notation [https://en.wikipedia.org/wiki/Classless_Inter-Domain_Routing#CIDR_notation here]. | #*If you do not have a static IP address for the network you are using, remember that it can sometimes change, so if you can no longer connect to your VM after a period of time sometimes it's worth checking to see if your IP address has changed. You can do this by putting [http://ipv4.icanhazip.com ipv4.icanhazip.com] in your browser and seeing if it matches what you have in your security rule. If your IP address changes frequently, but the left-most numbers always stay the same, it could make more sense to add a range of IP addresses rather than frequently modifying your security rules. Use [https://www.ipaddressguide.com/cidr this tool] for determining a CIDR IP range from an IP range or learn more about CIDR notation [https://en.wikipedia.org/wiki/Classless_Inter-Domain_Routing#CIDR_notation here]. | ||
#*It can be helpful to add a description about what a security rule is for, e.g. home or office. That way you will know which rule is no longer needed if you need to add a new rule while connecting, for example, from home. | #*It can be helpful to add a description about what a security rule is for, e.g. home or office. That way you will know which rule is no longer needed if you need to add a new rule while connecting, for example, from home. | ||