DevOps by REBRAIN
Открытые практикумы по DevOps, Linux, Golang, Networks, Security Мы на связи: info@rebrainme.com +7 (499) 116-34-68 https://rebrainme.com/ Зарегистрированы в РКН: https://knd.gov.ru/license?id=674db558d793bc0b0b8845ff®istryType=bloggersPermission
Show more📈 Analytical overview of Telegram channel DevOps by REBRAIN
Channel DevOps by REBRAIN (@rebrain_devops) in the Russian language segment is an active participant. Currently, the community unites 28 759 subscribers, ranking 4 611 in the Technologies & Applications category and 22 418 in the Russia region.
📊 Audience metrics and dynamics
Since its creation on невідомо, the project has demonstrated rapid growth, gathering an audience of 28 759 subscribers.
According to the latest data from 29 October, 2026, the channel demonstrates stable activity. Although there has been a change in the number of participants by -102 over the last 30 days and by -4 over the last 24 hours, overall reach remains high.
- Verification status: Not verified
- Engagement rate (ER): The average audience engagement rate is 7.79%. Within the first 24 hours after publication, content typically collects 6.50% reactions from the total number of subscribers.
- Post reach: On average, each post receives 2 241 views. Within the first day, a publication typically gains 1 870 views.
- Reactions and interaction: The audience actively supports content: the average number of reactions per post is 10.
- Thematic interests: Content is focused on key topics such as dovecot, linux, скрипт, postfix, yandex.
📝 Description and content policy
The author describes the resource as a platform for expressing subjective opinions:
“Открытые практикумы по DevOps, Linux, Golang, Networks, Security
Мы на связи:
info@rebrainme.com
+7 (499) 116-34-68
https://rebrainme.com/
Зарегистрированы в РКН: https://knd.gov.ru/license?id=674db558d793bc0b0b8845ff®istryType=bloggersPermiss...”
Thanks to the high frequency of updates (latest data received on 30 October, 2026), the channel maintains relevance and a high level of publication reach. Analytics show that the audience actively interacts with content, making it an important point of influence in the Technologies & Applications category.
Программа живых классов: 29.09 - Алгоритм траблшутинга 06.10 - Сеть в Linux: путь пакета и размер пакета 13.10 - Процесс внутри cgroup: лимиты, рантайм и пул 20.10 - Kubernetes: трафик и жизненный цикл пода 27.10 - Путь версии: от коммита до продакшена 03.11 - Путь метрики: почему прибор не видит происходящего🟡 Старт — 29 сентября ↘️ Узнать подробности и занять место
iptables -V
nf_tables в выводе — бэкенд уже новый.
iptables-translate -A INPUT -p tcp --dport 22 -j ACCEPT
iptables-restore-translate -f ipt.rules > nft.rules
4. Базовая настройка
nft add table ip filter
nft add chain ip filter input { type filter hook input priority 0 \; policy accept \; }
nft add rule ip filter input tcp dport 22 counter accept
nft add rule ip filter input iifname "lo" accept
nft add rule ip filter input ct state vmap { established : accept, related : accept, invalid : drop }
nft chain ip filter input { policy drop \; }
Политику на drop переключаем после проверки разрешающих правил.
5. Handle вместо номеров правил
nft --handle list ruleset
nft delete rule ip filter input handle 2
nft insert rule ip filter input tcp dport 22 accept
nft replace rule ip filter input handle 2 tcp dport 22 ct state new accept
6. Sets — замена ipset
nft add set ip filter blackhole { type ipv4_addr \; flags interval \; }
nft add element ip filter blackhole { 1.1.1.1, 192.168.0.0/24 }
nft add rule ip filter input ip saddr @blackhole drop
7. NAT
nft add table ip nat
nft add chain ip nat postrouting { type filter hook postrouting priority 100 \; }
nft add rule ip nat postrouting oifname "enp1s0" masquerade
nft add rule ip nat prerouting iifname "enp1s0" tcp dport 80 dnat to 192.168.1.100
8. Персистентность
nft -s list ruleset > /etc/nftables.conf
systemctl enable nftables
Итог
Nftables заменяет весь стек x-tables (iptables, ip6tables, arptables, ebtables, ipset) одной утилитой и одним модулем ядра, даёт sets за O(1) и правила по handle вместо номеров.
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