Hello,
I am John,I am a skilled Linux System Administrator with more than 4 years of experience and with a very strong background in
LAMP (Linux + Apache + MySQL + PHP), server and web application security and performance tuning. I am looking for full
time/part-time job in Linux administration works.
Technical Skills
Server Management:
1.   Strong Exposure to Network Architecture and Security on Linux servers.
2.   Web Servers - Apache 1.3.x/2.0.x,...
Hello,
I am John,I am a skilled Linux System Administrator with more than 4 years of experience and with a very strong background in
LAMP (Linux + Apache + MySQL + PHP), server and web application security and performance tuning. I am looking for full
time/part-time job in Linux administration works.
Technical Skills
Server Management:
1.   Strong Exposure to Network Architecture and Security on Linux servers.
2.   Web Servers - Apache 1.3.x/2.0.x, (expertise in configuring apache modules: mod_dosevasive, mod_security, mod_rewrite
etc ).
3.   Performance Tuning/ Monitoring of Servers
4.   Mail - SMTP, POP, IMAP, exim.
5.   Kernel compilation: Good experience in kernel compilation, 2.2, 2.4 and 2.6.
6.   Admin Tools - mytop, vmstat, iostat, top, traceroute, ping, sar, ntop, memcheck
7.   Backup - tar, cpio, dump (ufsdump)
8.   Security Protocols/Services/Tools - SSH, SSL, IPchains, IPtables, TCP Wrappers.
9.   Port scanners: nmap, superscan
10.   Vulnerability Scanner: Nessus
11.   Hands on experience in OpenVZ
12.   Crash Recovery of file systems - Using fsck
Web hosting Tools:
1.   Good knowledge in web hosting Control panels such as Cpanel, WHMÂ
2.   Managing User Accounts, File Systems, Security, Disk Usage and Backup.
3.   Server restoration and transferring of accounts between all types of server.
4.   Configuring Nagios for 24/7 server monitoring.
5.   Setting up new servers and installing server monitoring softwares like Nagios, MRTG etc.
Knowledge in Security Installations/Configuration
1.   Installing and configuring software Firewalls (APF and CSF)
2.   Installing and configuring rootkit detection software
3.    Scan and harden /tmp /var/tmp directories
4.    Extended Binary Hardening
5.    PAM Resource Limiting
6.    Inetd hardening
7.    Installing Brute Force Detection software (APF+BFD)
8.    Tweaking MySQL
9.    Host.conf & Sysctl Hardening
10.    Compiling PHP to the Latest Stable Version
11.    PHP Hardening (Tweak php.ini & Disabling of insecure PHP functions)
12.    Remove insecure packages and unnecessary softwares
13.    Upgrade Installed Softwares to the latest version
14.    Install Mod_security apache module with latest custom rules
15.    Tripwire installation and configuration
16.    Port scanning techniques
17.    Mailmon - Sendmail monitor installation
18.    ClamAV - Antivirus toolkit installation
19.    Install Exim Dictionary Attack ACL
20.    Spamassassin installation
21.    Setup RBL integrated with major Spam databases
22.    Install & Configure MRTG
Web Server Administration:
Apache 1.3.x/2.2.x Â
Linux Security Tools handled
Iptables, Ipchains, TCP Wrappers, APF, Rkhunter (Rootkit Hunter), chrootkit , CSF
Well experienced with working for many leading data centers and webhosts.
Well experienced in handling L1/L2/L3 level tech support, Security and Installation works.
Control Panels:
- Cpanel/WHM
- DirectAdmin
- Plesk
Support/Billing:
- Modernbill
- Kayako (including chat)
- WHMCS (including installation and error troubleshooting)
Hands on experience in VPS(OpenVz and Xen)
Installing, configuring VPSs with various linux distros.
Experienced with VPS(Virtuozzo), OPENVZ, HYPERVM,XEN Environment.
Good knowledge in FFMpeg installation to enable video streaming for servers.
My primary task includes,
Installation, configuration and fine tuning of APF, BDF and CSF to prevent DDOS attacks
Install and configure PRM to check load spikes and kill unwanted processes automatically
Configure exim to trace spammers on your server
Create and install shell scripts that automatically delete unwanted mails from the mail queue every hour
Configure exim to reject mails from IPs that are listed in common RBLs. This could reduce a lot of incoming spam issues on
the server
Install and configure Apache modules like mod_security, mod_throttle, mod_bandwidth and many more (whichever required) to
stop Cross scripting attacks and Remote file inclusion attacks
Fine tuning of FTP and DNS servers
Installation, configuration and fine tuning of Apache, Exim, FTP, DNS, mySQL
Installation and configuration of PHP and Perl on the server.
Installation and configuration of extra PHP modules and plugins like IonCube loader, Zend Optimizer etc
Installation and configuration of additional WHM plugins like WHMXtra, RVSkin Manager and RVSite Builder etc
Tweak built-in Linux parameters to increase security
Search for vulnerable files and directories on the server
Search for common hacker installed shell scripts like c99 and r57
Search and find suspicious processes and ports open on the server
Install and run Rootkit hunters like chkrootkit, rkhunter etc to look for compromised binaries
I can handle ticket support system, Live chat on a 24x7 basis.
Academic Background
Bachelor of Technology (B.Tech) Information Technology Engineering from Calicut University . (2004)
Please feel free to contact me through the followind ID's,
AOL:gnutechjohn
gmail:gnutechjohn@gmail.com
