Oleh Kovalievskyi
Private message 
Kharkiv,
Ukraine
available for hire
Rating
Language proficiency level
Українська: fluent
Deutsch: pre-intermediate
English: elementary
Skills and abilities
Programming
Administration
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DevOps
from 11 USD for hour
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Linux & Unix
from 6 USD for hour
- Software & Server Configuration
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System & Network Administration
from 6 USD for hour
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Windows
from 6 USD for hour
Portfolio
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68 USD Mail server configuration
DevOps
Configuration of #postfix, #dovecot and #roundcube if necessary.
Configuration of #spf, #dkim and #dmarc.
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Basic configuration of Squid proxy server.
Linux & Unix
In this article, I will consider the basic configuration of the HTTP proxy server SQUID, the article is based on my experience of configuration.
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Microtic Certification (MTCNA)
System & Network Administration
#Mikrotik #RouteOS
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OpenVPN server
Linux & Unix
1 . Installation of the OS #Linux (#Ubuntu 16.04 LTS)
2nd Installed #OpenVPN
Three Configuration of the server, #TUN (#L3) interface
• tun0 - for servers
… • tun1 - for #Mikrotik (Office)
• tun2 - for remote users
4 . Settings for #iptables (#firewall)
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Proxmox, Virtualization
Linux & Unix
The preparation:
1 . Rental of a server (#hetzner)
2nd Additional IP Address
Three Buy the license #CHR ( #RouterOS from #Mikrotik )
…
The work:
1 . Installation of the #Proxmox distribution
2nd Implementation of #Proxmox
3 Set up #iptables (#firewall)
4 . Installation of #CHR
and 5. Settings #CHR
6 . Installation of servers #OS
Reviews and compliments on completed projects 24 2
11 July 2024
16 USD
Setting up Apache hosts on the server
Very satisfied with the work with Oleg. Everything is done qualitatively, competently and punctually. Helped a lot in resolving all issues. Recommend!
22 June 2024
28 USD
Set up L2tp routing on Keenetic with Microtic
Definitely recommend 10 out of 10!
If you need to configure any network, or open ports, contact you will not regret.
18 June 2024
25 USD
Setting up Laravel server
Great! Very quickly did everything and provided additional recommendations. Will contact again!
17 June 2024
41 USD
Assistance in network administration
The project was completed earlier than expected, satisfied with the communication, if needed, I will contact Oleg again.
14 June 2024
34 USD
Set up VPN server on proxmox
Oleg, highly skilled freelancer. Configured VPN network, everything is great. In addition to the specification, showed other useful settings. I recommend and thank you.
13 June 2024
34 USD
Setting up a network between VPS and a local network via VPN
It was a pleasure to work with, a specialist in his field. I recommend!
13 June 2024
23 USD
Set up server for website
I did everything promptly, explained what he was doing during the work
A professional with a capital letter
RECOMMEND!
10 June 2024
11 USD
It is necessary to configure the Mikrotik router
All good. Excellent performer. Recommend
25 May 2024
11 USD
Displaying the website by IP address
Everything is done perfectly. All the nuances are taken into account, consultation provided. Thank you!
25 May 2024
135 USD
Automate the setup of VPS/VDS to install a domain and email.
Great performer, did everything asked and even more! Highly recommend for cooperation!
5 May 2024
27 USD
Set up IKEv2 VPN on Ubuntu 22.04 + logs + instructions
Wonderfully done job. There were some nuances with settings for different operating systems, but Oleg coped well with this task.
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16 April 2024
23 USD
Delete publication from the website through the database
"The issue was resolved very promptly by the specialist. I recommend for cooperation!"
29 January 2024
564 USD
Voip (SIP) Telephone
It is very well understood in automating, setting and administering Linux-based servers, SIP implementation and very well explains other moments. I recommend it!
27 January 2024
16 USD
Writing a Bash script
Everything at the highest level. performed greatly. Glad for pleasant collaboration.
26 January 2024
180 USD
Proxy = VLan's
Very satisfied with the result, fast, high quality
25 January 2024
68 USD
The 7 Keenetic Routers
A fan of his business is truly a specialist in juicy doing everything with understanding and careful approach!
17 January 2024
34 USD
CHR Microtik on Hetzner
The work was done quality and quickly! I recommend this specialist.
3 January 2024
23 USD
VPN Server Linux 2 Network Cards
Fast, quality, with understanding to the problem, very kindly
1 January 2024
12 USD
Assistance with Docker
Very fast and well done work! thank you
16 December 2021
11 USD
Configuring a server with Proxmox in the Hetzner DC
A very sensitive person and a professional of his business.
I am extremely pleased with the collaboration and I recommend Olga as a specialist of the highest class.
17 November 2021
5 USD
Set the printer through rdp
Everything is great. Everything is done quickly and professionally.
29 October 2021
11 USD
Решить проблему с MTU/MSS
The executive could not perform the work.
30 August 2021
16 USD
Uniform Proxmox network setting for vps under windows
He told it clearly, showed it without water. It was arranged as required, even more.
14 July 2021
11 USD
Rise and set up a VPN tunnel on a single-pay mini-PC on Linux
A good performer. It does everything quickly, it is available to explain. I’m not working with him for the first time. I recommend !
13 July 2021
5 USD
Set up modem on a single-payer computer
He did and arranged everything as he thought. He completed the task quickly, accessible explained. I will continue to cooperate!
8 November 2018
7 USD
Direct by geo through the tabgeo_country_v4.dat library
The guy made everything clearly, seriously and most importantly approached the job responsibly. It is always pleasant to work with such people.
Activity
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Set up routing between ipv4 and ipv6
110 USD
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Setting up a mail server (Postfix) with a web interface for multi-domain support
79 USD
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Setup of infrastructure and automatic deployment
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Devops engineer
68 USD
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Set up a droplet on Ubuntu to change the outgoing IP every half hour.
45 USD
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Integration of Asterisk with KeyCRM
45 USD
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Freelance project
11 USD
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Freelance project
11 USD
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