Vyacheslav, Автор в IT Blog

Boost UDP Transaction Performance

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Author: Toshiaki Makita
NTT Open Source Software Center

How to clear DNS cache on MacOS

If the DNS settings of any site have been changed and in order not to wait for the time to cache DNS records, you can manually clear them, after which the DNS client on MacOS will request new data from the DNS servers.

IPTables Rules for BGP

I will give an example of IPTables rules for BGP.

How to enable port 587 in Postfix

By default, Postfix listens for connections on port 25/tcp and in this article I will show what needs to be done so that it starts to happen port 587 (submission), since for example in many mail clients when setting up mail, port 587 is offered by default.

How to enable TRIM for third-party SSDs on MacOS

The trimforce utility allows you to activate TRIM on third-party devices connected to the AHCI controller; by default, TRIM commands are not sent to third-party storage devices. The trimforce utility has appeared since OS X 10.10.4.
On original devices, TRIM is used by default and no commands need to be entered.

Phabricator. How to allow users to create repositories

By default, only administrators can create repositories in Phabricator.

ABillS. SNMP Port Shift

I noticed once that on Huawei switches SNMP port indices can be shifted, for example, on Huawei s2326 VLANs are considered first, for example ifIndex.1 is vlan1, ifIndex.2, ifIndex.3, ifIndex.4 are user VLANs, and then ifIndex5 is the port Ethernet1. Because of this, when binding client services to switch ports in ABillS, the ports will not be displayed correctly.

Author Archives: Vyacheslav