System Engineering, this is my hobby.

• kannel
• squid
• delegate
• freeradius

• dhcp
• dns
• ipfw
• WLAN

• FreeBSD System
• Linux-Based System
• Multi-OS System

• RSA SecurID
• Juniper VPN-SSL

• Rhodes & Shwarz GPRS Stimulator
• JRC UMTS CDMA Stimulator

• Vodafone UMTS
• Nokia D211
• Sierra Wireless

• HTTP
• SIP
• SNMP
• BGP

• TCP/IP
• UDP

• GSM
• GPRS
• UMTS
• iMode