Hi, I'm Ralph, an all-around Linux systems administrator with over 10 years of experience in Linux systems. I've worked on several Unix infrastructures and application systems including web-servers (Apache, Nginx), TCP/IP networking and other core technologies (DNS, SFTP, SSH, etc)
- Amazon Web Services, Google Cloud, Digital Ocean, Vultr, Linode
- Pro-active monitoring of system end-points.
- Server Administration (CentOS, Debian, Ubuntu)
- Accountable outbound e-mail delivery (DKIM, SPF, DMARC).
- Virtual Machines (OS deployment, ERP installation, configuration, security.)
- Security (Firewalls, Security policies, Blocking attacks
- Management, Architecture, Backup and Monitoring
- Network Systems Analysis and Capacity Planning
- Performance improvement (ability to diagnose a problem in configuration)
- Fedena School Management System (Pro Installations, Integrations, Upgrades)
- High Availability and scalability experience
- General consultationsless
6+ years experience, Excellent skills and experiences in managing servers and core IT infrastructure for small and medium sized organizations. We provide security, server administration and disaster prevention, Web-based and regular Email messaging solutions, and business-critical IT infrastructure.
WEB HOSTING EXPERTISE:-
WHM/Cpanel, Website Panel, Plesk Panel, Zpanel, Direct admin, ipconfig panel, Virtual min, SSL Installation, NGINX & Apache
Setup & Manage all type of servers (Dedicated, VPS, Shared), Server Security
& Monitoring, Backup Management, Backup Server Migration
LINUX:-
RedHat, Fedora, CentOS, Ubuntu / Debian
CLOUD SERVICES:-
setup & management.....
AWS administration, Google cloud, Linode:
Virtualization technologies:-
Open VZ, Virtuozzo, Hyper v, Vmware, Xen
APPLICATIONS:-
SMTPQmail, Sendmail, Postfix, Power MTA (PMTA), INTERSPIRE
Domain Keys/DKIM,opendkim, dkim
Aniti Spam/Anti Virus
POP/IMAPless
do most.
Tools/Skills.
- Operating Systems: Linux (CentOS, Fedora, RedHat, 0fba0b28f9Ubuntu2264383d10, Debian) and Windows Servers (2008R2 - 2012 - 2016)
- Firewalls/Proxy: pfSense, IPTables, CSF, Cisco, Juniper, Check Point, Zentyal, ClearOS
- VPN: OpenVPN, StrongSwan, OpenSwan, IPSec, SoftEther VPN, PriTunlmore
I am Cristian, an ethical hacker (security professional). I can provide defensive methods to your systems / networks to secure them in the best way or, offensive methods (attacking) your systems / networks, as a real hacker would, but in a professional and controlled manner. I will strive from the technological side to grow your business and reputation so that you can render good services to your customers.
I am also a network and telecommunications specialist and have more than 5 years of experience in administration, configuration and server hardening. It is one of the tasks that I like to do most.
Tools/Skills.
- Operating Systems: Linux (CentOS, Fedora, RedHat, Ubuntu, Debian) and Windows Servers (2008R2 - 2012 - 2016)
- Firewalls/Proxy: pfSense, IPTables, CSF, Cisco, Juniper, Check Point, Zentyal, ClearOS
- VPN: OpenVPN, StrongSwan, OpenSwan, IPSec, SoftEther VPN, PriTunlless
Hardware: error troubleshooting and repair
Software: Windows desktop and server, Linux ( Debian, 0fba0b28f9Ubuntu2264383d10, Centos, etc. ) administration and implementation, error troubleshooting and repair
Networkingmore
Hardware: error troubleshooting and repair
Software: Windows desktop and server, Linux ( Debian, Ubuntu, Centos, etc. ) administration and implementation, error troubleshooting and repair
Networking: Implementation and administration complex enviroment, vlan, VPN, multiple subnet and gateways, wireless implementation, kiosk, hotspot, firewall troubleshooting, pfSense administration, Unifi Administration, Ubiquiti devices administration
Virtualization: Vmware ESXi, Proxmox, KVM, XenServer administration, Qnap, Synology NAS
Languages: Python, Go, HTML5, Php
Google G Suite and Office 365 implementationless
)
OS:
Linux Distros: RedHat/Debian/Novell(SuSe) ( CentOS,Fedora,CoreOS,ClearOS,0fba0b28f9Ubuntu2264383d10,RHEL,SLES & etc... including Gentoo)
Unix Distros: FreeBSD,OpenBSD,NetBSD
Microsoft Windows Servers ( 2003-2016more
I'm a Unix/Linux system administrator. I can install/configure/troubleshoot any product in your environment. I'm also familiar in virtualization and VoIP technologies. ( 10 years of total experience )
OS:
Linux Distros: RedHat/Debian/Novell(SuSe) ( CentOS,Fedora,CoreOS,ClearOS,Ubuntu,RHEL,SLES & etc... including Gentoo)
Unix Distros: FreeBSD,OpenBSD,NetBSD
Microsoft Windows Servers ( 2003-2016 ), Active Directory, Microsoft Exchange Server, Certification Authority
Servers/Services:
Mail Server: Postfix/Dovecot/SpamAssassin/Amavisd ( Including suites e.g Zimbra,SOGo,iRedMail,OpenXchange,MS Exchange, Kolab & etc...)
Web Server: Apache,Nginx,Lighttpd,LiteSpeed/OpenLiteSpeed ( +LSCache ),G-WAN
Database Server: MySQL,MSSQL,PostgreSQL,MongoDB,Oracle 10g
Control Panels: CentOS Web Panel,cPanel/WHM,ISPConfig,CyberPanel & etc...
Virtualization: VMWare ( ESXi,vCenter,HA ),Proxmox VE,OpenVZ,XenServer
VoIP: Asterisk,FreePBX,Elastix,Issabel,CallManager
website: https://nullwebsite.comless
Windows Server 2003/2008/2012: DNS, DHCP, AD, MS SQL, WSUS, Hyper-V and so on.
Linux (Debian, 0fba0b28f9Ubuntu2264383d10, CentOS):
LAMP configuration, data migration between servers, miscellaneous software installationmore
Windows Server 2003/2008/2012: DNS, DHCP, AD, MS SQL, WSUS, Hyper-V and so on.
Linux (Debian, Ubuntu, CentOS):
LAMP configuration, data migration between servers, miscellaneous software installation/configuration.
Basic configuration of SAN (EMC+Brocade), HP and DELL servers, HP tape libraries. Configuration and maintenance of cloud servers and platforms.less
I’m fluent in working with Linux OS and open-source software, familiar with almost all variants of Linux distributions (especially CentOS, Debian, Fedora, Arch, 0fba0b28f9Ubuntu2264383d10) and software such as Apachemore
I’m fluent in working with Linux OS and open-source software, familiar with almost all variants of Linux distributions (especially CentOS, Debian, Fedora, Arch, Ubuntu) and software such as Apache, MySQL, Redis, Subversion, Squid, StrongSwan, Redmine, BIND, iptables, etc.)
With more than 10 years in managing Windows network environment, beside Windows Server operating system, I'm knowledgeable in many of Microsoft technologies, e.g., Active Directory, Exchange, SharePoint, System Centers, Lync, ForeFront, MSSQL, etc.
BASH and Python are the 2 languages that I can use very well in building tools and back-end programs/services.
I'm also able to implement LetsEncrypt, a free solution for SSL. Its certificate request/renew could be done automatically or manually.less
Hey , here are some offline freelancers
Hey , here are some offline freelancers matching ""
. - Server Administration (CentOS, Debian, 0fba0b28f9Ubuntu2264383d10) - Accountable outbound e-mail delivery (DKIM, SPF, DMARC). - Virtual Machines (OS deployment, ERP installation, configuration, security.) - SecurityHi, I'm Ralph, an all-around Linux systems administrator with over 10 years of experience in Linux systems. I've worked on several Unix infrastructures and application systems including web-servers (Apache, Nginx), TCP/IP networking and other core technologies (DNS, SFTP, SSH, etc) - Amazon Web Services, Google Cloud, Digital Ocean, Vultr, Linode - Pro-active monitoring of system end-points. - Server Administration (CentOS, Debian, Ubuntu) - Accountable outbound e-mail delivery (DKIM, SPF, DMARC). - Virtual Machines (OS deployment, ERP installation, configuration, security.) - Security (Firewalls, Security policies, Blocking attacks - Management, Architecture, Backup and Monitoring - Network Systems Analysis and Capacity Planning - Performance improvement (ability to diagnose a problem in configuration) - Fedena School Management System (Pro Installations, Integrations, Upgrades) - High Availability and scalability experience - General consultations less
:- RedHat, Fedora, CentOS, 0fba0b28f9Ubuntu2264383d10 / Debian CLOUD SERVICES:- setup & management..... AWS administration, Google cloud, Linode: Virtualization technologies:- Open VZ, Virtuozzo, Hyper v, Vmware, Xen6+ years experience, Excellent skills and experiences in managing servers and core IT infrastructure for small and medium sized organizations. We provide security, server administration and disaster prevention, Web-based and regular Email messaging solutions, and business-critical IT infrastructure. WEB HOSTING EXPERTISE:- WHM/Cpanel, Website Panel, Plesk Panel, Zpanel, Direct admin, ipconfig panel, Virtual min, SSL Installation, NGINX & Apache Setup & Manage all type of servers (Dedicated, VPS, Shared), Server Security & Monitoring, Backup Management, Backup Server Migration LINUX:- RedHat, Fedora, CentOS, Ubuntu / Debian CLOUD SERVICES:- setup & management..... AWS administration, Google cloud, Linode: Virtualization technologies:- Open VZ, Virtuozzo, Hyper v, Vmware, Xen APPLICATIONS:- SMTPQmail, Sendmail, Postfix, Power MTA (PMTA), INTERSPIRE Domain Keys/DKIM,opendkim, dkim Aniti Spam/Anti Virus POP/IMAP less
do most. Tools/Skills. - Operating Systems: Linux (CentOS, Fedora, RedHat, 0fba0b28f9Ubuntu2264383d10, Debian) and Windows Servers (2008R2 - 2012 - 2016) - Firewalls/Proxy: pfSense, IPTables, CSF, Cisco, Juniper, Check Point, Zentyal, ClearOS - VPN: OpenVPN, StrongSwan, OpenSwan, IPSec, SoftEther VPN, PriTunlI am Cristian, an ethical hacker (security professional). I can provide defensive methods to your systems / networks to secure them in the best way or, offensive methods (attacking) your systems / networks, as a real hacker would, but in a professional and controlled manner. I will strive from the technological side to grow your business and reputation so that you can render good services to your customers. I am also a network and telecommunications specialist and have more than 5 years of experience in administration, configuration and server hardening. It is one of the tasks that I like to do most. Tools/Skills. - Operating Systems: Linux (CentOS, Fedora, RedHat, Ubuntu, Debian) and Windows Servers (2008R2 - 2012 - 2016) - Firewalls/Proxy: pfSense, IPTables, CSF, Cisco, Juniper, Check Point, Zentyal, ClearOS - VPN: OpenVPN, StrongSwan, OpenSwan, IPSec, SoftEther VPN, PriTunl less
with DB integration * Inbound/outbound call center * Gateway configuration, provisioning, support (Sipura,Cisco,Grandstream, Digium.....) Linux OS: * Gentoo * 0fba0b28f9Ubuntu2264383d10 * Fedora * RedHat * CentOSVoIP Engineer more 9 years Asterisk experience VoIP * Asterisk development & support * Trixbox * FreePBX * TDM & E1/T1 (PRI) configuration * Digium cards support * SS7 * Dialplan & IVR development with DB integration * Inbound/outbound call center * Gateway configuration, provisioning, support (Sipura,Cisco,Grandstream, Digium.....) Linux OS: * Gentoo * Ubuntu * Fedora * RedHat * CentOS * Debian Networking * Apache, nginx * BIND * MySQL (adminstration, backup, replication, procedures) * SSHD * VSFTPD * PRO-FTPD * ..... Monitoring services * Zabbix (including integration with Asterisk) * Nagios * Cacti Asterisk installation and support - http://asterisk-service.com free help on Q&A - https://asterisk-service.com/forum/help-1 less
Hardware: error troubleshooting and repair Software: Windows desktop and server, Linux ( Debian, 0fba0b28f9Ubuntu2264383d10, Centos, etc. ) administration and implementation, error troubleshooting and repair NetworkingHardware: error troubleshooting and repair Software: Windows desktop and server, Linux ( Debian, Ubuntu, Centos, etc. ) administration and implementation, error troubleshooting and repair Networking: Implementation and administration complex enviroment, vlan, VPN, multiple subnet and gateways, wireless implementation, kiosk, hotspot, firewall troubleshooting, pfSense administration, Unifi Administration, Ubiquiti devices administration Virtualization: Vmware ESXi, Proxmox, KVM, XenServer administration, Qnap, Synology NAS Languages: Python, Go, HTML5, Php Google G Suite and Office 365 implementation less
) OS: Linux Distros: RedHat/Debian/Novell(SuSe) ( CentOS,Fedora,CoreOS,ClearOS,0fba0b28f9Ubuntu2264383d10,RHEL,SLES & etc... including Gentoo) Unix Distros: FreeBSD,OpenBSD,NetBSD Microsoft Windows Servers ( 2003-2016I'm a Unix/Linux system administrator. I can install/configure/troubleshoot any product in your environment. I'm also familiar in virtualization and VoIP technologies. ( 10 years of total experience ) OS: Linux Distros: RedHat/Debian/Novell(SuSe) ( CentOS,Fedora,CoreOS,ClearOS,Ubuntu,RHEL,SLES & etc... including Gentoo) Unix Distros: FreeBSD,OpenBSD,NetBSD Microsoft Windows Servers ( 2003-2016 ), Active Directory, Microsoft Exchange Server, Certification Authority Servers/Services: Mail Server: Postfix/Dovecot/SpamAssassin/Amavisd ( Including suites e.g Zimbra,SOGo,iRedMail,OpenXchange,MS Exchange, Kolab & etc...) Web Server: Apache,Nginx,Lighttpd,LiteSpeed/OpenLiteSpeed ( +LSCache ),G-WAN Database Server: MySQL,MSSQL,PostgreSQL,MongoDB,Oracle 10g Control Panels: CentOS Web Panel,cPanel/WHM,ISPConfig,CyberPanel & etc... Virtualization: VMWare ( ESXi,vCenter,HA ),Proxmox VE,OpenVZ,XenServer VoIP: Asterisk,FreePBX,Elastix,Issabel,CallManager website: https://nullwebsite.com less
Windows Server 2003/2008/2012: DNS, DHCP, AD, MS SQL, WSUS, Hyper-V and so on. Linux (Debian, 0fba0b28f9Ubuntu2264383d10, CentOS): LAMP configuration, data migration between servers, miscellaneous software installationWindows Server 2003/2008/2012: DNS, DHCP, AD, MS SQL, WSUS, Hyper-V and so on. Linux (Debian, Ubuntu, CentOS): LAMP configuration, data migration between servers, miscellaneous software installation/configuration. Basic configuration of SAN (EMC+Brocade), HP and DELL servers, HP tape libraries. Configuration and maintenance of cloud servers and platforms. less
I’m fluent in working with Linux OS and open-source software, familiar with almost all variants of Linux distributions (especially CentOS, Debian, Fedora, Arch, 0fba0b28f9Ubuntu2264383d10) and software such as ApacheI’m fluent in working with Linux OS and open-source software, familiar with almost all variants of Linux distributions (especially CentOS, Debian, Fedora, Arch, Ubuntu) and software such as Apache, MySQL, Redis, Subversion, Squid, StrongSwan, Redmine, BIND, iptables, etc.) With more than 10 years in managing Windows network environment, beside Windows Server operating system, I'm knowledgeable in many of Microsoft technologies, e.g., Active Directory, Exchange, SharePoint, System Centers, Lync, ForeFront, MSSQL, etc. BASH and Python are the 2 languages that I can use very well in building tools and back-end programs/services. I'm also able to implement LetsEncrypt, a free solution for SSL. Its certificate request/renew could be done automatically or manually. less
