Cristian N. Bradiceanu

Projects
What I do in my spare time.

Current projects

• OpenSolaris server
  • ZFS mirror root pool
  • Crossbow Network Virtualization (VLANs, virtualized interfaces)
  • Sun xVM Hypervisor (Xen® dom0)
    • CentOS 5.4 (PV)
    • Fedora 12 (PV)
    • Ubuntu 9.10 Server Edition (HVM & PV)
    • FreeBSD 6.4 (HVM)
    • Windows XP and Windows 7 (HVM & PVIO)
• Sun Solaris 10 5/09 server
• ZFS mirror root pool
• Firewall with NAT and port forwarding (IP Filter), two uplinks
• DHCP server
• DNS authoritative and recursive server
• Web server - testing Apache and Sun Java System Web Server
• Proxy server - testing squid and Sun Java System Web Proxy Server
• Running Windows XP, CentOS, OpenSolaris and IBM OS/2 Warp virtualized on VirtualBox
• Redundant FreeBSD 8 servers (BGP and static routing, firewall, NAT, DNS, web, mail)
• Evaluating Vyatta Core running as Xen domUs
• Evaluating Zimbra Collaboration Suite 6.0 Open Source Edition
• IPv6 on FreeBSD, Linux, Solaris servers, routers and firewalls
  
  

Past projects

• Distributed asterisk 1.4 VoIP PBX with SIP clients and trunks, IAX trunks, shared dialplans, FXO and FXS lines, voicemail
• Google Apps for Your Domain testing
• Relocation to Doha, Qatar
• Dial-up solution for a hotel
• Linux (Fedora Core 5) on Fujitsu Siemens PRIMERGY BX620 S2 and BX630 blade servers
• Home: hardware RAID-1 (IT8212F, Western Digital hard drives) under linux (dmesg)
• Instant Messaging solution for company's employees, using jabberd 2
• Communication solution:
  • Mail server, anti-virus
  • Dual-homed router
  • L2 (MAC) LAN filtering
  • IP bound to Ethernet address
  • L2 (bridged) VPNs to remote offices, road warriors
  • Outbound Internet path based on LAN private IP address
  • WAN failover/backup policy
  • Traffic prioritization based on IP address and protocols (VoIP phones, high, medium and low priority)
  • IP accounting
  • LAN network access and priority derived from facility access/security devices
• Low-delay, high bandwidth IP VPNs between company's HQ and remote offices, suitable for real-time video monitoring
• Custom firmware based on OpenWrt White Russisan RC5 (openvpn, QoS)
• (Wireless) ISP bandwidth management system
  • HTB for guaranteed/maximum bandwidth
  • Web-based customer and IP addresses management (PHP/MySQL)
  • Switched from TCNG to "manual" tc rules generation from database
  • Matching rules include IP TOS Precedence
  • IMQ
  • Per customer and per IP address accounting
  • Learned a lot about HTB, especially r2q parameter :-)
  • Auto-generated graphs from classes and qdiscs
• OpenSource e-mail server presentation at OpenSource Convention held in Timisoara on 30 Nov 2005. Conference program. My event page.
• Auto-install Mandrake 10.1 CD with custom setup and applications
• Authoritative and recursive DNS server with about 50 domains using PowerDNS and poweradmin
• Cross-compile Linux for Asus WL-500g. (notes)
• Cross-compile Linux for Linksys WRT54G Wireless Broadband router (router, firewall, NAT, OpenVPN)
  • Wireless AP and AP-client mode
  • Stateful firewall (netfilter/iptables)
  • DHCP server and client for both wired and wireless
  • 5 Ethernet ports router (VLAN based)
  • OpenVPN client and/or server for security
  • QoS and bandwidth management
  • web setup and service interface
  • Possible: net-snmp server
• PPTP links for Wireless customers authentication and security
• Full-flavour dial-up management system
  • Web-based customer management system
  • Traffic and Time Accounting
  • Statistics
  • FreeRADIUS
• Home: switched from Edimax Broadband router BR-6104K to a FreeBSD 5.4 machine (dmesg)
  • PPPoE
  • Traffic graphs (can you see why the broadband router "choked" from time to time :-)
  • cacti
  • DDNS client :-)
• Home: switched from Planet WAP-1963A Access Point to US Robotics 5450 Access Point. Great speed improvement :-)
• NT4-compatible Primary Domain Controller (PDC) using samba 3 with openldap backend
• mail server
  • qmail
  • many domains (vpopmail)
  • web administration (qmailadmin)
  • anti-spam (rblsmtpd)
  • anti-virus
  • webmail
• IPSEC VPN using D-Link DI-804HV routers
• Auto-install (no user input) Mandrake 9 CD with custom setup and applications
• Bandwidth sharing CIR/MIR QoS using HTB with text interface for hundreds of broadband home-customers (non-prio) and companies (prio, SLA)
• Install & upgrade Kayako eSupport
• Automated backup solution for Linux and FreeBSD using rsync on vinum volumes
• Web server with apache, PHP, MySQL and ftp access for many domains
• Investigating some sshd brute-force attacks. Counter-measures.
• High-performance web server, thousand of simultaneous connections
• Social and technical (PHP, MySQL, Smarty) experiment: www.mumu.ro
• Plotting from AIX to a non-PS plotter from Catia
• Secure VPN using Teledat 820 routers
• V90/ISDN dial-up system using Cyclades NL4000 and FreeBSD router/firewall, RADIUS, web accouting/statistics
• GPRS via Bluetooth with HP compaq nc8000 laptop and Nokia 6310i mobile phone on FreeBSD 5.2.1
• Linux Magazine Romania article: Wildcard DNS, Verisign way?, No. 2, Oct 2003 (download)