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Firewall & services

Ethan W edited this page Sep 26, 2026 · 6 revisions

Allowing Services

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Add dhcp service

firewall-cmd --add-service=dhcp --permanent 
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note. Adding the --permanent flag allows the change to be enabled even when the system is rebooted

Apply Changes

firewall-cmd --reload

firewall-cmd --list-all
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note. If there is a network issue, check the nmtui GUI or the dhcpd.conf file


sudo dhcpd -t -cf /etc/dhcp/dhcpd.conf

sudo pkill dhcpd

sudo systemctl start dhcpd

ntmui GUI

dhcp.conf

Lab Environment

  • Proxmox
  • Windows
  • Active Directory
  • Linux
  • Pfsense

Lab01 — FW & Windows Client

Pfsense Configuration

Firewall


wks01 Configuration

Network Configuration

User & Group Configuration

Tech Terms


Lab 02 | DNS + ADDS Role

ad01 Configuration

DNS Manager

Joining Domains



Lab 03 | Linux (Rocky)

dhcp01 Configuration

Users & Groups

Extra Linux Commands


Lab 4 | DHCP (Rocky Linux)

dhcp01 Configuration

PuTTY + Enhanced Explorer security configuration (IE ESC)

Configure DHCP & Firewall Services

User & Group File Permissions

Securing SSH

DORA (DHCP Handshake)


Lab 5 | ADDS and Group Policy

ad01 Configuration

OU (Organizational Unit)

Group Policy Management


Lab 6 | Assessment

Environment Configurations


Lab 7 | Server Core / Remote Administrator Tools

FS01 - Windows Core


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