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macOS post-exploitation for credential harvesting, DTrace monitoring, TCC bypass, and stealth operations via native tools
Windows userland post-exploitation for credential harvesting, monitoring, AMSI/ETW bypass, and stealth operations
Kubernetes post-exploitation for container escape, secret extraction, RBAC abuse, and cluster persistence
Basado en la clasificación ocupacional SOC
Mostrando SKILL.md
| name | cis-ubuntu1604-v200-3-5-1-4 |
| description | Ensure ufw loopback traffic is configured |
| category | cis-networking |
| version | 2.0.0 |
| author | cyberstrike-official |
| tags | ["cis","ubuntu","linux","ubuntu-16.04","firewall"] |
| cis_id | 3.5.1.4 |
| cis_benchmark | CIS Ubuntu Linux 16.04 LTS Benchmark v2.0.0 |
| tech_stack | ["ubuntu","linux"] |
| cwe_ids | [] |
| chains_with | [] |
| prerequisites | [] |
| severity_boost | {} |
Configure the loopback interface to accept traffic. Configure all other interfaces to deny traffic to the loopback network (127.0.0.0/8 for IPv4 and ::1/128 for IPv6).
Loopback traffic is generated between processes on machine and is typically critical to operation of the system. The loopback interface is the only place that loopback network (127.0.0.0/8 for IPv4 and ::1/128 for IPv6) traffic should be seen, all other interfaces should ignore traffic on this network as an anti-spoofing measure.
Run the following commands and verify output includes the listed rules in order:
ufw status verbose
To Action From
-- ------ ----
Anywhere on lo ALLOW IN Anywhere
Anywhere DENY IN 127.0.0.0/8
Anywhere (v6) on lo ALLOW IN Anywhere (v6)
Anywhere (v6) DENY IN ::1
Anywhere ALLOW OUT Anywhere on lo
Anywhere (v6) ALLOW OUT Anywhere (v6) on lo
Run the following commands to implement the loopback rules:
ufw allow in on lo
ufw allow out on lo
ufw deny in from 127.0.0.0/8
ufw deny in from ::1
None
Version 7
9.4 Apply Host-based Firewalls or Port Filtering - Apply host-based firewalls or port filtering tools on end systems, with a default-deny rule that drops all traffic except those services and ports that are explicitly allowed.