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mukul975
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Complete skill folder anatomy across all cybersecurity skills: - scripts/agent.py: 80-150 line Python agents using real libraries (impacket, boto3, azure-mgmt-*, kubernetes, pefile, yara, scapy, shodan, stix2, etc.) - references/api-reference.md: real API documentation with method signatures - LICENSE: MIT license for all skill folders
66 lines
2.3 KiB
Markdown
66 lines
2.3 KiB
Markdown
# API Reference: VLAN Network Segmentation Agent
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## Overview
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Configures and audits VLAN-based network segmentation on Cisco and multi-vendor switches using Netmiko and NAPALM. Creates VLANs, configures access/trunk ports, hardens unused ports, and audits for VLAN hopping vulnerabilities.
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## Dependencies
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| Package | Version | Purpose |
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|---------|---------|---------|
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| netmiko | >=4.0 | SSH-based switch configuration |
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| napalm | >=4.0 | Multi-vendor network device management |
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## CLI Usage
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```bash
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# Audit VLAN configuration
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python agent.py --host 192.168.1.1 --username admin --password pass --audit-only
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# Full configuration mode
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python agent.py --host 192.168.1.1 --username admin --password pass --device-type cisco_ios
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```
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## Key Functions
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### `connect_netmiko(host, username, password, device_type)`
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Establishes SSH connection via Netmiko supporting cisco_ios, cisco_nxos, arista_eos, juniper_junos.
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### `get_vlan_config(conn)`
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Retrieves current VLAN configuration with TextFSM parsing of `show vlan brief`.
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### `create_vlan(conn, vlan_id, vlan_name)`
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Creates a new VLAN with name on the switch.
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### `configure_access_port(conn, interface, vlan_id)`
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Configures port as access with port-security, portfast, and BPDU guard.
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### `configure_trunk_port(conn, interface, allowed_vlans)`
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Configures trunk port with explicit allowed VLANs, native VLAN 999, and DTP disabled.
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### `harden_unused_ports(conn, interfaces)`
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Assigns unused ports to quarantine VLAN 999 and shuts them down.
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### `configure_inter_vlan_acl(conn, acl_name, rules)`
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Creates extended ACLs for inter-VLAN routing access control.
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### `audit_vlan_security(conn)`
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Checks for: default native VLAN, unhardened unused ports, and DTP negotiation enabled.
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### `get_napalm_config(host, username, password, driver)`
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Retrieves device facts, interfaces, and VLANs using NAPALM for multi-vendor support.
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## Security Checks
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| Check | Severity | Issue |
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|-------|----------|-------|
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| Native VLAN | Medium | Default VLAN 1 on trunks enables VLAN hopping |
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| Unused Ports | Low | Unhardened ports allow unauthorized network access |
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| DTP Negotiation | High | Dynamic trunking enables VLAN hopping attacks |
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| Port Security | Medium | Missing MAC address limiting |
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## Supported Device Types
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Netmiko: `cisco_ios`, `cisco_nxos`, `arista_eos`, `juniper_junos`, `hp_procurve`
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NAPALM: `ios`, `nxos`, `eos`, `junos`
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