12/9/2023 0 Comments Run dyn updater as a service![]() ![]() # The script will only update the firewall rules if the IP address has changed.ĭDNS_HOSTNAME="" # This script is intended to be run from a cron job with root privileges. # to allow access to all ports and protocols from the dynamic IP address. ![]() # Bash script to query DDNS service for hostname current IP address and create or update UFW firewall rules Let’s create the bash script to be used by our cron job: $ sudo cat /usr/local/bin/ufw_ddns_update.sh Once we have UFW installed and configured, and once we have our Dynamic DNS hostname ready, the next step is to create a bash script and a cron job that would periodically query our DDNS hostname and update UFW to allow connections from the current IP address. UFW is commonly used on Ubuntu and Debian derivatives but can be installed on most Linux distributions. IIS requires this user right to be explicitly granted to the ASPNET user account.The Uncomplicated Firewall (UFW) is a firewall configuration tool developed to ease iptables firewall configuration. But if you have optional components such as ASP.NET or IIS, you might need toĪssign the user right to the additional accounts that those components require. On most computers, the Log on as a service user right is restricted to the Local System, Local Service, and Network Service built-in accounts by default, and there's no negative impact. Minimize the number of other accounts that are granted this user right. This right isn't granted through the Group Policy setting. ![]() Countermeasureīy definition, the Network Service account has the Log on as a service user right. AnĪttacker who has already reached that level of access could configure the service to run with the Local System account. The risk is reduced because only users who have administrative privileges can install and configure services. The Log on as a service user right allows accounts to start network services or services that run continuously on a computer, even when no one is logged on to the console. And it addresses the possible negative consequences of the countermeasure. This section describes how an attacker might exploit a feature or its configuration. Group Policy settings are applied in the following order, which will overwrite settings on the local device at the next Group Policy update: The policy setting Deny logon as a service supersedes this policy setting if a user account is subject to both policies. This section describes features, tools, and guidance to help you manage this policy.Ī restart of the computer isn't required for this policy setting to be effective.Īny change to the user rights assignment for an account becomes effective the next time the owner of the account logs on. Server type or GPOĭomain Controller Effective Default SettingsĬlient Computer Effective Default Settings The policy's property page also lists default values. The following table lists the actual and effective default policy values. Minimize the number of accounts that are granted this user right.Ĭomputer Configuration\Windows Settings\Security Settings\Local Policies\User Rights Assignment Default valuesīy default this setting is Network Service on domain controllers and Network Service on stand-alone servers.Running a process under a service account circumvents the need for human intervention.Ĭonstant: SeServiceLogonRight Possible values This policy setting determines which service accounts can register a process as a service. This article describes the recommended practices, location, values, policy management, and security considerations for the Log on as a service security policy setting.
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