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Yevgeny — jekasumy  
System administration · Software and server configuration
Ukraine Sumy, Ukraine
Professional system administration. Linux/Unix.
9361
 435  0

My Skills and Experience I specialize in and work with various operating systems: Debian Ubuntu RHEL CentOS FreeBSD Windows I work with server hardware: IBM HP ProLiant Dell PowerEdge Supermicro I know how the following software should work: Web: Apache, Nginx, Lighttpd, OpenLiteSpeed Mail: Exim, Postfix, Dovecot FTP: ProFTPd, vsftpd, PureFTPd DNS: BIND, PowerDNS DHCP Gateway: NAT, traffic shaping Proxy: Squid Directory: LDAP AAA: FreeRADIUS VPN: IPsec-based, OpenVPN, PPTP, L2TP TFTP NTP Syslog TLS/SSL SNMP Virtualization: KVM, Xen, VMware ESX, OpenVZ, Proxmox Backup and Restore: RSYNC Revision Control Systems: CVS, SVN, Git File Sharing: NFS, SMB Software-Defined/Network-Based Storages: DRBD, Ceph, iSCSI, AoE Printing Systems: CUPS I am familiar with databases: PostgreSQL MySQL I have experience with monitoring systems: Zabbix Cacti Munin I also work with: Telephony: Asterisk (FreePBX, Elastix, MikoPBX) Routers: Mikrotik, All (Firmware OpenWRT, DD-WRT), hardware repair Billing systems for Internet Service Providers: Abills, Ubilling (building networks from scratch) Billing systems for hosting providers: BillManager, RootPanel, WHMCS Hosting panels: ISPManager, CPANEL, BrainyCP, VestaCP, ISPConfig, aaPanel, HestiaCP PON equipment (ONU, OLT): BDCOM Switches: Mikrotik, D-Link, TP-LINK, Cisco I have extensive experience in these areas. Feel free to reach out to me, I'll answer all your questions! Please note: I do not engage in website development.
  • abills
  • bgp
  • billing
  • CloudLinux
  • cPanel
  • hestiacp
  • ISPmanager
  • linux / windows
  • Mikrotik
  • nginx
  • routeros
  • VestaCP
  • Zabbix

IP-telephony and VoIP · 1C
Ukraine Kherson, Ukraine
4009
 30  0
  • freepbx
  • Linux Debian
  • Microsoft SQL Server
  • Windows Server

IP-telephony and VoIP · PHP
Ukraine Kyiv, Ukraine
698
 1  0
  • active directory
  • freepbx
  • Hyper-V
  • Office365
  • vmware
  • Vue.js

Vitaly — wakez
IP-telephony and VoIP · Website development
Ukraine Kyiv, Ukraine
568
 14  0
  • elastix
  • freepbx
  • network

IP-telephony and VoIP · Client management and CRM
Ukraine Kyiv, Ukraine
501
 2  0
  • freepbx
  • goip

System administration · Linux and Unix
Ukraine Kyiv, Ukraine
453
 10  0
  • dovecot
  • esxi
  • freepbx
  • Mikrotik
  • openvpn
  • postfix
  • Proxmox
  • roundcube
  • VPN
  • Windows Server
  • zimbra

IP-telephony and VoIP · Linux and Unix
Ukraine Kyiv, Ukraine
185
 3  0

Привет! Linux & VoIP инженер к вашим услугам, всего коммерческий опыт около 4х лет. Занимаюсь администрированием Linux-систем и, немного, разработкой под небольшие задачи. 4 года опыта работы с UNIX-подобными системами (Debian / Ubuntu). ✔️VoIP Telephony services (SIP): Asterisk, FreePBX IP-PBX platforms Experience with hardware like GSM, FXO/FXS gateways, PRI modules Dialplan programming (AEL, LUA) Asterisk AMI, AGI, ARI interfaces A little experience with Kamailio SIP trunking and carriers interconnection ✔️Linux and DevOps: A power user and administrator of Debian/Ubuntu systems for about 5 years VPS and Cloud Environments such as Hetzner, Digital Ocean, Vultr, Linode, Rackspace, GCP, AWS (Cloud Practitioner) Experience with Terraform, Ansible, Puppet, Docker, LXC Proficient with Proxmox (KVM) ✔️Monitoring: Experience with Zabbix and Nagios Prometheus, Grafana, ELK ✔️Software Development Junior level of PHP, JS, Bash and Python FrontEnd development (jQuery and React.js) API development - Node.js (express, koa), Python (flask) ✔️Networking Feeling comfortable about the most common networking protocols around me Fell in love with SIP & (S)RTP, DHCP, HTTP(s), DNS, ICMP, WebRTC, STUN, SSH, VRRP and a few others Proficient with Cloudflare (DNS, firewalling, SSL/TLS) Experience with Mikrotik hardware (on my path to MTCNA now)
  • Linux Debian
  • nginx
  • ubuntu

IP-telephony and VoIP · IP-telephony and VoIP
Ukraine Kyiv, Ukraine
166
  • freepbx

IP-telephony and VoIP · Go
Ukraine Kharkiv, Ukraine
127
 2  0
  • database
  • freepbx
  • golang
  • json

Linux and Unix · Computer networking
Ukraine Kyiv, Ukraine
16
  • cisco
  • freepbx
  • Mikrotik