Для сетевых инженеров
Для компьютерных сетевых инженеров
Дальше — инфинитивных：所属・性質（形容詞語尾）
вых：「系」っぽく見えるが、語彙依存（固定表現）
If this article relates to your network architecture, security design, or infrastructure modernization, feel free to contact us.
Email:
contact@g-i-t.jp
Typical network architecture solutions designed and implemented by GIT. These patterns are derived from real enterprise environments and long-term operational experience.
“`
Тема этой статьи сама по себе не является новой технологией, но сейчас я занимаюсь исследованиями сетевых технологий, которые будут актуальны через пять и более лет.
На время я приостановлю обновление статей, чтобы сосредоточиться на исследовательской работе.
If this article relates to your network architecture, security design, or infrastructure modernization, feel free to contact us.
Email:
contact@g-i-t.jp
Typical network architecture solutions designed and implemented by GIT. These patterns are derived from real enterprise environments and long-term operational experience.
“`
Referring to next-generation firewalls as “traditional” may sound like a black joke.
However, with the wider adoption of HTTP/3 and QUIC, the scope of encryption has expanded to the point where even DNS traffic is encrypted. Under such conditions, concerns are emerging that techniques such as URL filtering and FQDN-based routing may no longer function as expected.
When NGINX was acquired by F5 in 2019, I initially assumed that appliance-based load balancers were approaching the end of their lifecycle. For a moment, it seemed reasonable to think that the era of BIG-IP would continue for quite some time. More recently, however, discussions around freenginx have surfaced, adding another layer of nuance to that assumption.
As was also the case with Netscreen, the interpretation of corporate acquisitions and related developments can vary significantly depending on the reader’s professional background. This highlights the importance of being someone who can read and interpret such information carefully—particularly as an engineer, but not only as one.
I consider this to be a very obvious point.
However, in practice, many people seem to assume that these factors are a trade-off — that they are inherently in conflict with one another.
I will begin by discussing concrete examples from a micro-level, on-the-ground perspective.
Additionally, in the initial phases, extra time buffers are intentionally allocated to higher-risk action items.
As the project progresses, the remaining tasks generally tend to involve lower levels of risk, which can help reduce overall time pressure and stress.
This approach often contributes to a higher likelihood of success over the course of the project.ucture a WBS and timeline
Risk management is not about pushing risks to the later stages, but rather about addressing them early by design.
t is not uncommon to encounter organizations where a culture persists in which unnecessary business trips are justified under the pretext of network maintenance.
This represents a direct inefficiency in terms of cost, and at the same time poses a risk to organizational integrity and morale.
Improvement approach:
A single pair of firewalls was placed on-site, and the design was revised so that additional SVI instances (virtual interfaces, effectively functioning as virtual firewalls) could be provisioned remotely as needed.
As a result, business travel costs were effectively reduced to zero.
Improvement approach:
A combination of remote desktop access and remote SPAN was implemented, allowing mirrored traffic (referred to in IPA terminology as a “mirror port”) to be forwarded to a remote location for packet capture.
This approach reduced travel-related costs and labor time, and also helped alleviate the psychological burden on the personnel involved.
I tend to view risk in the following way.
The more predictable the potential impact of damage is, the thicker the ice can be considered.
The less predictable the impact is, the thinner that ice becomes.
In other words, when crossing thin ice, one deliberately steps on the parts that are considered the thickest.
Rather than ignoring risk, the focus is placed on areas that can be reasonably anticipated, while avoiding entry into unknown territory.
Risk reduction and cost reduction can be achieved together.
In many cases, deferring risk tends to lead to higher costs over the long term.
Focusing solely on cost reduction may, in turn, create larger risks.
For this reason, I tend to choose a design approach in which the thickest parts of the “thin ice” are addressed first, deliberately resolving the risks that should be dealt with early on.
As a result, costs are often reduced, and the overall operational burden becomes lighter.
実際に行った設計として「出張を激減させるNW」と言うものを提案/ご導入いただいた実績がありますがもっと凄いの思いつきました。
「良くある構成」つまり、外部/内部FW計4台と、複数のSW（Cat9300等）やルータ（C8200等）で計20台程度の機器を購入する場合を1.5億円と見積もりました（ChatGPTが）
私の設計する構成と調達方法（調達業者を変更する）では800万円～600万円で済むそうです。（金額はChatGPTが弾いています）※通信帯域は100Mbps以下の想定）
もちろん、無料ではお話しできません。
Since we cannot publish what we learned on-site (generally, we recognize that we do not own the intellectual property rights to things discovered using our own verification/measuring equipment),
we will link to a conversation with ChatGPT to explain how we implemented this (accuracy requires actual verification, but we have already purchased a verification machine).
Switching even though it’s Wi-Fi?
Forti Wi-Fi Features Overview
*We plan to post an article on SDN with FortiSW at a later date. (Test machine already purchased)
If this article relates to your network architecture, security design, or infrastructure modernization, feel free to contact us.
Email:
contact@g-i-t.jp
Typical network architecture solutions designed and implemented by GIT. These patterns are derived from real enterprise environments and long-term operational experience.
“`
This section documents ongoing research conducted by the principal engineer
and also illustrates how musical perception is applied
to engineering and language analysis.
As part of a long-term effort with a clearly defined endpoint,
I am currently executing a structured learning plan
scheduled to conclude in June 2030.
The plan consists of approximately 900 hours in total,
based on 30 minutes per day over a five-year period.
This duration corresponds to nearly 90% of the commonly cited time
required for a Japanese speaker to become conversational in Russian.
The intent of this plan extends beyond language acquisition itself
and focuses on developing sensitivity to timing, pitch,
and continuous variation within a fixed time horizon.
During this process, I encountered an unexpected realization:
Russian pronunciation contains phenomena that closely resemble blue notes.
Certain vowel transitions and interrogative intonations
do not settle on fixed pitches,
but instead occupy intermediate regions between tones.
Recognizing this was a moment of genuine surprise.
My initial attempt to analyze these characteristics relied on the piano.
However, I soon realized a fundamental limitation:
a piano, by design, does not allow any form of pitch bending.
Each key produces a fixed, discrete pitch,
making it impossible to represent the soft,
elastic transitions that characterize Russian phonetics.
This rigidity forces pitch decisions to occur too early
and obscures the continuous nature of the sound.
At first, I found the guitar to be a more suitable instrument.
String bending and vibrato made it possible
to approximate the required microtonal variation,
and the physical nature of the instrument
helped reveal the presence of pitch movement.
However, while the guitar excels at expressive bending,
it lacks the precision and repeatability
needed for systematic analysis.
This led me to conclude that a synthesizer keyboard
offers the most appropriate balance.
Unlike a piano, it is not constrained to fixed pitch behavior,
and unlike a guitar, it allows controlled, repeatable manipulation
of pitch, sustain, and timing.
In addition, keyboard-based instruments provide
a wide variety of ways to stop or release sound:
key release timing, envelope shaping,
velocity sensitivity, and controlled decay.
This diversity makes it possible to model
the subtle softness, fading, and articulation
that are essential to Russian pronunciation,
particularly at phrase endings.
References to blue notes, guitar techniques,
and synthesizer keyboard control are therefore included here
not as musical hobbies,
but as analytical instruments.
They provide a practical framework
for reason
As a single practical note related to “musical notes,”
I have adopted a simple workaround for interrogative intonation.
If forming a question feels difficult,
one option is to append a word equivalent to “OK?”
at the end of the sentence.
The word I use is “верно” (verno).
As a mnemonic, I associate it with “verna”
from the Italian word “taverna” (a small restaurant),
which makes it easier to recall.
The pitch movement can be approximated as:
C → D → D♯
However, the sharp should not be treated as a fixed pitch.
It is better expressed by bending up to the note after picking,
then gradually releasing the bend while maintaining sustain.
For explaining how sounds are sustained and released,
I find it more effective to use a keyboard-based instrument.
That said, compared to the strong mechanical resistance
of a piano keyboard,
a synthesizer keyboard feels more suitable for this purpose.
👉 From here onward, a list of random example sentences follows.
👉 The table below has not yet been translated and is currently in Japanese.
| Ш л ю з | п о | у м о л ч а н и ю | н а с т р о е н | н е п р а в и л ь н о |
|---|---|---|---|---|
| Gateway | by | default | configured | incorrectly |
| シュリュース | ポ | ウモルチャーニユ | ナストロエン | ニェプラーヴィルナ |
| Ш л ю з | п о | у м о л ч а н и ю | н е | о т в е ч а е т |
|---|---|---|---|---|
| Gateway | by | default | not | responding |
| シュリュース | ポ | ウモルチャーニユ | ニェ | エトヴェチャーエット |
| Ш л ю з | п о | у м о л ч а н и ю | — | 192.168.1.1 |
|---|---|---|---|---|
| Gateway | by | default | is | 192.168.1.1 |
| シュリュース | ポ | ウモルチャーニユ | ダッシュ | 192.168.1.1 |
※数値は英語読みでも通じるそうです。
次はWi-fiネタです。
| W i – F i | н е | п о д к л ю ч ё н |
|---|---|---|
| Wi‑Fi | not | connected |
| ワイファイ | ニェ | パドクリュチョーン |
| В в е д и т е | п а р о л ь | о т | W i – F i |
|---|---|---|---|
| Enter | password | for | Wi‑Fi |
| ヴヴェーディチェ | パローリ | オト | ワイファイ |
| Э т а | с е т ь | W i – F i | з а щ и щ е н а |
|---|---|---|---|
| This | network | Wi‑Fi | is protected |
| エータ | セーチ | ワイファイ | ザシシナ |
ふと思いついて、自分で考えた語呂合わせとAIに考えて貰った語呂合わせを100個列挙します。
✅ ネットワーク基礎系
アフターリザーツィヤ → авторизация（認証/認可）
今後都度都度、追記して行きます。
ウダリョンナヤ ラボータ → удалённая работа（リモート作業）
ドスターヴカ → доставка（デリバリー）
クルグローソーチナ → круглосуточно（24時間稼働）
FortiGate مصنوع في آسيا، ولكنه يلتزم بالمعايير الأمنية الغربية.
ネットワーク機器が仮想環境に吸い込まれてしまうと、クライアント側のWi-fiしかNW技術者の生きる道は無いと考えますが、（サバ・クラの時代に戻ってしまう）
更なる未来は肉体労働ですらロボットに代替されてもWi-fiは残る（法律が変わらない限り）
と考えています。（サーバもアプリもAIに代替されてしまっても尚、Wi-fiは残る訳です）
直近の懸念としてはHTTP3です。NGFW/UTMですらレガシFWとしてしか働けなくなります（暗号化される領域が増えるため。全部SASE上でやっていくことになる＝仮想環境に吸い込まれてしまう訳です）
■リンク先に「ISMバンド」についての説明を載せています。
現代のWi-fiについて「無線LANアクセスポイントの最適な設置個所をご提案可能です。
（理論値です。つまり経験や勘では有りません。審査の厳しい顧客へ提案する事を前提としています）
■リンク先に、初歩理論から入る形で無線LANアクセスポイントの設置個所について、ChatGPTに説明させています。
