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Vyacheslav Gapon – personal blog, manuals, articles, notes, development

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Author Archives: Vyacheslav

Setting up PJSIP in Asterisk

In this article I will show examples of setting up PJSIP in Asterisk.
Since chan_sip is deprecated, I use and recommend using PJSIP.

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Posted byVyacheslav20.03.202520.03.2025Posted inAsteriskTags: SIPLeave a comment on Setting up PJSIP in Asterisk

Setting up ETP4860-B1A2 (SMU11B) with Lifepo4 battery

As an example, I will configure ETP4860-B1A2 (SMU11B) with a 50A Lifepo4 battery.

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Posted byVyacheslav12.02.202521.12.2025Posted inHuaweiTags: LiFePO4Leave a comment on Setting up ETP4860-B1A2 (SMU11B) with Lifepo4 battery

How to Configure Cisco C1121X-8P

Once I was asked to configure Cisco ISR C1121X-8P, this router model had only a MicroUSB console port, a regular cable was suitable for connection, a COM8 port appeared in the device manager, to which I was able to connect via putty at a speed of 9600.

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Posted byVyacheslav12.02.202512.02.2025Posted inCiscoLeave a comment on How to Configure Cisco C1121X-8P

SNMP OID MIB for SMU11B ETP4860

One day I needed to research SNMP OID and write a Zabbix template for ETP4860-B1A2 (SMU11B).

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Posted byVyacheslav09.02.202511.12.2025Posted inHuaweiTags: LiFePO4, SNMPLeave a comment on SNMP OID MIB for SMU11B ETP4860

How to configure DH-IPC-HFW1431S1P-S4

For example, I will set up the Dahua DH-IPC-HFW1431S1P-S4 (2.8mm) 4MP IP camera.

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Posted byVyacheslav30.01.202530.01.2025Posted inDahuaLeave a comment on How to configure DH-IPC-HFW1431S1P-S4

Installing GeoIP in Apache2

I was once asked to block some countries on a web server running Apache2 and Ubuntu Server 20.04.

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Posted byVyacheslav30.01.202530.01.2025Posted inApache2, SecurityLeave a comment on Installing GeoIP in Apache2

FreeRadius log rotation

Once I installed FreeRadius from the source code, so I needed to make a log rotation script, since the log file sometimes grew to large sizes, for example, during technical work or development, a lot of debugging information could be written, during standard work, almost no logs were written.

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Posted byVyacheslav17.12.202417.12.2024Posted inLinuxTags: FreeRADIUSLeave a comment on FreeRadius log rotation

How to set up SRNE HSI 3000S inverter

As an example, I will set up an SRNE HSI 3000S inverter with a Lifepo4 battery and describe the parameters that I set up.

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Posted byVyacheslav17.12.202431.03.2026Posted inHardwareTags: LiFePO4Leave a comment on How to set up SRNE HSI 3000S inverter

Nginx. Using the map module

Once I needed to additionally keep a log of 404 requests in a separate file, with subsequent export via rsyslog to a mysql database and processing by scripts.

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Posted byVyacheslav08.11.202408.11.2024Posted inNginx, SecurityLeave a comment on Nginx. Using the map module

How to add characters to the end of each line in Notepad++

One day I was editing HTML code and needed to add a br tag at the end of each line.

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Posted byVyacheslav08.11.202408.11.2024Posted inWindowsTags: Notepad++Leave a comment on How to add characters to the end of each line in Notepad++

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