This is my old homepage, leaving it here only for reference. May contain old information


Name: Jakub Wartak, B.Sc., VNU1-RIPE
E-mail: (PGP PUBLIC KEY)

Profile: freelancer interested in cluster architectures, system/network security and internet protocols/technologies
System administrator (AIX, Linux, Solaris, *BSD) and Oracle Database Administrator
Hobby: Air Soft Gun (the best ASG movie on YouTube)
My private small laboratory (25/04/2008)
Certificates:

• OCE - Oracle Database 10g Managing Oracle On Linux Certified Expert
• OCP DBA-Oracle Certified Professional Database Administrator for Oracle 10g
• OCA DBA-Oracle Certified Associate Database Administrator for Oracle 10g ( 1Z0-042 )
• SCSA-Sun Certified System Administrator for Solaris 10 ( CX-212-200 CX-212-202 )
• SCNA-Sun Certified Network Administrator for Solaris 10 ( CX-212-302 )

UWAGA: Nie wszystkie materialy sa skonczone. NIE ponosze odpowiedzalnosci za zadne straty spowodowane tym oprogramowaniem i tekstami. Wszystko robisz na wlasna odpowiedzialnosc. Nie lubie polskich literek, dlatego bedzie ich tutaj jak najmniej.

WARNING: Not all stuff is finished. I'm NOT responsible for any damages caused by this software and texts. Use at own risk.

Sun Solaris:

• Solaris 10 Micro-FAQ [ PDF, ~700 kB ] (31/08/2006)
• Kompilacja FreeRADIUSa i PgSQL na Sun Solaris 10 [ PDF, PL ]
• tcplistenzone.pl - displaying open listening ports with UID and zonenames ( perl )
• (simple/stupid) kernel modules: kernel thread creation
• hackuptime.c - modify uptime on live Solaris system
• my solaris system/misc files...

Asterisk/VOIP:

• Automatyzacja zglaszania braku internetu u ISP ( IVR ) [ PL ]

Linux and Netfilter:

• Pseudo load-balancing [ TXT, PL ]
• Bardziej dynamiczny pseudo load-balancing [ TXT, PL ]
• Rozne ciekawe regulki iptables [ PDF, PL ]
• Skladanie wysokowydajnego firewalla na Linuxie ( hardware ) [ TXT, PL ] -- przedawnione
• Banalny skrypt do przeliczania ilosci sesji conntrack na RAM ( perl )
• SyncRTd: Synchronize Routing Tables Daemon ( perl )

FreeRADIUS:

• Elastyczna autoryzacja adresow MAC przy pomocy FreeRADIUSa na AP600/2000 ( wersja 0.1 ) [ PDF, PL ]
• Idea loadbalancingu lacz dzieki serwerowi RADIUSowemu [ PNG, PL ]
• Dwa redundantne serwery RADIUSowe w oparciu o dwie bazy MySQLowe z replikacja [ PNG, PL ]

Databases:

• MySQL: daily OPTIMIZE TABLE cron script ( perl )
• MySQL: daily archive and backup cron script ( perl )
• MySQL: an unfinished attempt to audit mysqld settings ( perl )
• PostgreSQL: ciekawe zapytania dla DBA zebrane z zakamarkow google [ TXT, PL ]
• Oracle: the best Oracle architecture explanation ever [ PPT ] - not mine
• LDAP: Sun Directory Server: lost rootpw password ? [ TXT ]

Networking:

• Walka ze SPAMem u malych ISP [ PPT, PL ]
• Dlaczego PPPoE ? [ PDF, PL ]
• Linux Virtual Servers farm without single point of failure [ PNG ]
• Idea obchodzenia awarii QosBridga/IPSa przy uzyciu switchy z (R)STP [ PNG ]
• Idea obchodzenia awarii QosBridga/IPSa przy zastosowaniu Cisco Catalyst, VLAN, (R)STP i PVST+ [ PNG ]
• LoopDNS Daemon - filtering nameserver used to fool some worms ( when used with DNAT of DNS, perl )
• Proof-of-concept: OrinocoTOP - realtime bandwidth usage for AP600/2000

Codez:

• My patches...
• Proof-of-concept: Hydra-NG - an advanced threaded core for WebServer [ C ]
• FlashBOT - fast attack IRC bots with dedicated HUB [ C ]
• Proof-of-concept: Remote PCAP daemon-PCAP stream to FIFO, then via UDP to FIFO on another server [ C ]
• Proof-of-concept: LD_PRELOAD I/O O_DIRECT open libc shared library (.so) hack [ C, of course ]

Useful links:		Blogs:
Debian: RiseUp.Net		Kevin Closson's Blog
Oracle ADP-GMBH DBA heaven		Depesz.com Blog [PL]
PostgreSQL: DBA heaven		Hails way Blog
		Robert Milkowski
SolarisAdmin.pl Forum		Blog O'Matty
Links to AIX links ;)		High Scalability
Oracle Base		Polish OpenSolaris blogs
Oracle DBA Morgan's library
Oracle FAQ
Oracle RAC SIG
Database Journal: Oracle archives
Oracle Myths for Unix Sysadmins