Agent Skills: network-appliance-offensive

Offensive testing of perimeter network appliances and VPN crypto — IKE/IPsec (aggressive-mode, transform/DH enum, NAT-T), Check Point SIC/OPSEC, safe firmware/patch-level inference for FortiGate/PAN-OS/Cisco ASA/Citrix feeding CVE applicability, NTLM Type-2 target-info decode, handshake-completion TLS-version probing, and an RST-TTL forgery discriminator. The active/offensive counterpart to the static firewall-review skill. Use when a perimeter firewall/VPN/appliance is in scope and you must test it (not just audit a config), without reinventing raw-socket protocol tooling each engagement.