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* [Palo Alto Networks](https://www2.paloaltonetworks.com/blog/corporate)
* SE monthly series

# Palo Alto Networks

## SE monthly series

[![DNSトンネリング技術とその応用: 近年増えつつある4つの技術応用分野](https://www2.paloaltonetworks.com/blog/wp-content/uploads/2021/01/Woman-Showing-Server-Room.jpg)](https://www2.paloaltonetworks.com/blog/2024/06/recently-observed-dns-tunneling-applications/?lang=ja)  
[DNSトンネリング技術とその応用: 近年増えつつある4つの技術応用分野
\-----------------------------------](https://www2.paloaltonetworks.com/blog/2024/06/recently-observed-dns-tunneling-applications/?lang=ja)

郵便の「宛先住所」と「郵便番号」の関係は、よくインターネット上の「FQDN (完全修飾ドメイン名)」と「IPアドレス」の関係にたとえられます。郵便で一意な「宛先住所」を書けばそこから「郵便番号」を調べることができるように、インターネットも一意な「FQDN」を指定すればDNSサービスを経由して「IPアドレス」を調べられます。そして郵便と同じく、このしくみはインターネットで情報をやりとりする上で接続先と接続元の一意な特定に欠かせない基盤となっています。このため、DNSサービスを提供する53/udpや53/tcp宛の通信は従来のファイアウォールであればたいてい通過が許可されています。DNSトンネリングはこのしくみを悪用する攻撃です。...  
[Secure the Enterprise](https://www.paloaltonetworks.com/blog/category/secure-the-enterprise-2/?lang=ja&ts=markdown)  
Jun 27, 2024  
By [Ayako Kimijima](https://www.paloaltonetworks.com/blog/author/ayako-kimijima/?lang=ja&ts=markdown "Posts by Ayako Kimijima")

## Palo Alto Networks

*** ** * ** ***

[Announcements](https://www.paloaltonetworks.com/blog/category/announcement/?ts=markdown)

*** ** * ** ***

[Company \& Culture](https://www.paloaltonetworks.com/blog/category/company-culture/?ts=markdown)

*** ** * ** ***

[Points of View](https://www.paloaltonetworks.com/blog/category/points-of-view/?ts=markdown)

*** ** * ** ***

[Public Sector](https://www.paloaltonetworks.com/blog/category/public-sector/?ts=markdown)

*** ** * ** ***

[Products and Services](https://www.paloaltonetworks.com/blog/category/products-and-services/?ts=markdown)

*** ** * ** ***

[Partners](https://www.paloaltonetworks.com/blog/category/partners/?ts=markdown)

*** ** * ** ***

![「運用」はセキュリティ対策の要! Cortex XSOARによるセキュリティ運用の自動化と効率化](https://www2.paloaltonetworks.com/blog/wp-content/uploads/2024/01/Thinking-2-1.jpg)  
[Cybersecurity](https://www.paloaltonetworks.com/blog/category/cybersecurity-jp/?lang=ja&ts=markdown), [Products and Services](https://www.paloaltonetworks.com/blog/category/products-and-services-ja/?lang=ja&ts=markdown), [Secure the Enterprise](https://www.paloaltonetworks.com/blog/category/secure-the-enterprise-2/?lang=ja&ts=markdown), [カテゴリーなし](https://www.paloaltonetworks.com/blog/category/%e3%82%ab%e3%83%86%e3%82%b4%e3%83%aa%e3%83%bc%e3%81%aa%e3%81%97/?lang=ko&ts=markdown)

## [「運用」はセキュリティ対策の要! Cortex XSOARによるセキュリティ運用の自動化と効率化](https://www2.paloaltonetworks.com/blog/2024/01/security-operation-cortex-xsoar/?lang=ja)

本稿が2024年最初のブログということで、トピックを何にしようかあれこれ考えていたのですが、やはり「セキュリティ運用のしんどさをなんとかする」というのが、現場からの声として一番切実...  
Jan 14, 2024  
By [Tomoaki Suzuki](https://www.paloaltonetworks.com/blog/author/tomoaki-suzuki/?lang=ja&ts=markdown "Posts by Tomoaki Suzuki")  
![プロキシ環境でも危ないDNSという経路とその対策](https://www2.paloaltonetworks.com/blog/wp-content/uploads/2023/12/GettyImages-929647280-edit.jpg)  
[Cybersecurity](https://www.paloaltonetworks.com/blog/category/cybersecurity-jp/?lang=ja&ts=markdown), [Products and Services](https://www.paloaltonetworks.com/blog/category/products-and-services-ja/?lang=ja&ts=markdown), [Secure the Enterprise](https://www.paloaltonetworks.com/blog/category/secure-the-enterprise-2/?lang=ja&ts=markdown)

## [プロキシ環境でも危ないDNSという経路とその対策](https://www2.paloaltonetworks.com/blog/2023/12/dns-security-with-proxy-environment/?lang=ja)

その一方で、オンプレミス環境の利用も続いていますし、IPAが高度標的型攻撃に向けたシステム設計ガイドでその利用を推奨\[1\]していることもあり、こうしたプロキシ環境がそう簡単になくなることはないでしょう。  
Dec 14, 2023  
By [Masaki Yamashita](https://www.paloaltonetworks.com/blog/author/myamashita/?lang=ja&ts=markdown "Posts by Masaki Yamashita")  
![ソリューション導入検討の負荷を軽減: UTD (Ultimate Test Drive) によるハンズオン体験](https://www2.paloaltonetworks.com/blog/wp-content/uploads/2022/04/Collaboration.jpg)  
[Announcement](https://www.paloaltonetworks.com/blog/category/announcement-ja/?lang=ja&ts=markdown), [Products and Services](https://www.paloaltonetworks.com/blog/category/products-and-services-ja/?lang=ja&ts=markdown), [Secure the Enterprise](https://www.paloaltonetworks.com/blog/category/secure-the-enterprise-2/?lang=ja&ts=markdown)

## [ソリューション導入検討の負荷を軽減: UTD (Ultimate Test Drive) によるハンズオン体験](https://www2.paloaltonetworks.com/blog/2023/11/hands-on-with-utd-ultimate-test-drive/?lang=ja)

筆者はネットワークやセキュリティのソリューション導入を計画されているご担当者様とお話させていただく機会が多いのですが、そのさいよく寄せられるのが、「ソリューションの価値を机上では理...  
Nov 14, 2023  
By [Koichi Kageyama](https://www.paloaltonetworks.com/blog/author/koichi-kageyama/?lang=ja&ts=markdown "Posts by Koichi Kageyama")  
![マルチベンダー セキュリティ プラットフォームにはどんな弊害がある?](https://www2.paloaltonetworks.com/blog/wp-content/uploads/2021/06/Overlord.jpg)  
[Platform](https://www.paloaltonetworks.com/blog/cloud-security/category/platform-ja/?lang=ja&ts=markdown), [Secure the Enterprise](https://www.paloaltonetworks.com/blog/category/secure-the-enterprise-2/?lang=ja&ts=markdown)

## [マルチベンダー セキュリティ プラットフォームにはどんな弊害がある?](https://www2.paloaltonetworks.com/blog/2023/10/multivendor-platform/?lang=ja)

攻撃の自動化やAI技術、商用ツール、オープンソースツールなどの利用が増えるにつれ、どの組織のセキュリティチームも人手ではとてもさばききれないような数のイベントアラートを日々セキュリティ機器から受け取っています。人手を極力...  
Oct 15, 2023  
By [Ken Kusunoki](https://www.paloaltonetworks.com/blog/author/kkusunoki/?lang=ja&ts=markdown "Posts by Ken Kusunoki")  
![PAやPrisma Accessで使う証明書の種類とその設定場所](https://www2.paloaltonetworks.com/blog/wp-content/uploads/2021/08/Virtual-Meeting.jpg)  
[Secure the Enterprise](https://www.paloaltonetworks.com/blog/category/secure-the-enterprise-2/?lang=ja&ts=markdown)

## [PAやPrisma Accessで使う証明書の種類とその設定場所](https://www2.paloaltonetworks.com/blog/2023/09/pa-and-certificate-tls/?lang=ja)

弊社の次世代ファイアウォール製品(PA-Series) やPrisma Accessを管理・設定していると、証明書を要求される場面がたくさんあります。ただ、ひとくちに「証明書」といっても、その種類はさまざま。どの種類の証明書をどこに設定する...  
Sep 14, 2023  
By [Tadayoshi Suzuki](https://www.paloaltonetworks.com/blog/author/tasuzuki/?lang=ja&ts=markdown "Posts by Tadayoshi Suzuki")  
![どう選ぶ? パロアルトネットワークスのSD-WANソリューション](https://www2.paloaltonetworks.com/blog/wp-content/uploads/2023/08/cq5dam.web_.1280.1280-3.jpeg)  
[Cybersecurity](https://www.paloaltonetworks.com/blog/category/cybersecurity-jp/?lang=ja&ts=markdown), [Products and Services](https://www.paloaltonetworks.com/blog/category/products-and-services-ja/?lang=ja&ts=markdown), [Secure the Enterprise](https://www.paloaltonetworks.com/blog/category/secure-the-enterprise-2/?lang=ja&ts=markdown)

## [どう選ぶ? パロアルトネットワークスのSD-WANソリューション](https://www2.paloaltonetworks.com/blog/2023/08/select-sd-wan-solution/?lang=ja)

SD-WAN (Software-Defined Wide Area Network)は、ネットワークをソフトウェアで制御するSDN (Software-Defined Network)の技術を使って、地理的に遠く離れた...  
Aug 14, 2023  
By [Daisuke Horie](https://www.paloaltonetworks.com/blog/author/daisuke-horie/?lang=ja&ts=markdown "Posts by Daisuke Horie")  
![IoTセキュリティの動作概要](https://www2.paloaltonetworks.com/blog/wp-content/uploads/2022/01/Medical-Scan.jpg)  
[Cybersecurity](https://www.paloaltonetworks.com/blog/category/cybersecurity-jp/?lang=ja&ts=markdown), [IoT Security](https://www.paloaltonetworks.com/blog/network-security/category/iot-security-ja/?lang=ja&ts=markdown), [Products and Services](https://www.paloaltonetworks.com/blog/category/products-and-services-ja/?lang=ja&ts=markdown), [Secure the Enterprise](https://www.paloaltonetworks.com/blog/category/secure-the-enterprise-2/?lang=ja&ts=markdown)

## [IoTセキュリティの動作概要](https://www2.paloaltonetworks.com/blog/2023/07/how-iot-security-works/?lang=ja)

本稿はIoTセキュリティ導入前に必要となる概要と動作概要を説明するブログ2回目です。前回はIoTセキュリティの概要を紹介しました。今回はより具体的なイメージを掴めるよう、まず動作概要を解説し、デバイスIDの概念やデプロイメントのオプション、...  
Jul 17, 2023  
By [Taku Maeda](https://www.paloaltonetworks.com/blog/author/taku-maeda/?lang=ja&ts=markdown "Posts by Taku Maeda")  
![ASMの必要性とその先のケア](https://www2.paloaltonetworks.com/blog/wp-content/uploads/2021/06/CXOs_Guide_to_Managing_Your_Attack_Surface.png)  
[Cybersecurity](https://www.paloaltonetworks.com/blog/category/cybersecurity-jp/?lang=ja&ts=markdown), [Products and Services](https://www.paloaltonetworks.com/blog/category/products-and-services-ja/?lang=ja&ts=markdown), [Secure the Cloud](https://www.paloaltonetworks.com/blog/category/secure-the-cloud-2/?lang=ja&ts=markdown), [Secure the Enterprise](https://www.paloaltonetworks.com/blog/category/secure-the-enterprise-2/?lang=ja&ts=markdown), [Secure the Future](https://www.paloaltonetworks.com/blog/category/secure-the-future-2/?lang=ja&ts=markdown), [Threat Prevention](https://www.paloaltonetworks.com/blog/category/threat-prevention/?lang=ja&ts=markdown)

## [ASMの必要性とその先のケア](https://www2.paloaltonetworks.com/blog/2023/06/why-we-need-asm-and-what-should-be-considered/?lang=ja)

この話をするとき、よく話題にのぼるのがペネトレーション テスト(PENテスト)との比較です。ただし、ペネトレーションテストとASMには、大きく分けて2つの観点から後述する明確な違いがあります。この話をするとき、よく話題に...  
Jun 14, 2023  
By [Daisuke Terauchi](https://www.paloaltonetworks.com/blog/author/daisuke-terauchi/?lang=ja&ts=markdown "Posts by Daisuke Terauchi")  
![知る人ぞ知る！無料ツールで作成するセキュリティレポート](https://www2.paloaltonetworks.com/blog/wp-content/uploads/2021/11/Double-Checking.jpg)  
[Cybersecurity](https://www.paloaltonetworks.com/blog/category/cybersecurity-jp/?lang=ja&ts=markdown), [Products and Services](https://www.paloaltonetworks.com/blog/category/products-and-services-ja/?lang=ja&ts=markdown), [Threat Prevention](https://www.paloaltonetworks.com/blog/category/threat-prevention/?lang=ja&ts=markdown)

## [知る人ぞ知る！無料ツールで作成するセキュリティレポート](https://www2.paloaltonetworks.com/blog/2023/05/pa-and-prisma-access-slr/?lang=ja)

PA-Series(ハードウェア、仮想版)やPrisma Accessを導入後、最低限の設定追加のみで運用していませんか?もちろん、製品側でシグネチャを含むコンテンツ類などは最新のものに自動でアップデートされていますが、日々変化する攻撃やI...  
May 14, 2023  
By [Yoji Kanazumi](https://www.paloaltonetworks.com/blog/author/yoji-kanazumi/?lang=ja&ts=markdown "Posts by Yoji Kanazumi")  
![クラウドネイティブ サービスのシンプルさで高度なセキュリティ機能を実現: Cloud NGFW for AWS](https://www2.paloaltonetworks.com/blog/wp-content/uploads/2023/02/Fog-upon-City.jpg)  
[Cloud Network Security](https://www.paloaltonetworks.com/blog/cloud-security/category/cloud-network-security-ja/?lang=ja&ts=markdown), [Cloud Security](https://www.paloaltonetworks.com/blog/cloud-security/category/cloud-security-ja/?lang=ja&ts=markdown), [Cybersecurity](https://www.paloaltonetworks.com/blog/category/cybersecurity-jp/?lang=ja&ts=markdown), [Products and Services](https://www.paloaltonetworks.com/blog/category/products-and-services-ja/?lang=ja&ts=markdown), [視点](https://www.paloaltonetworks.com/blog/category/%e8%a6%96%e7%82%b9/?lang=ja&ts=markdown)

## [クラウドネイティブ サービスのシンプルさで高度なセキュリティ機能を実現: Cloud NGFW for AWS](https://www2.paloaltonetworks.com/blog/2023/04/cloud-ngfw-for-aws/?lang=ja)

Cloud NGFW for AWS は、Amazon Web Services (AWS) のプラットフォーム上でパロアルトネットワークス...  
Apr 16, 2023  
By [Tomoaki Suzuki](https://www.paloaltonetworks.com/blog/author/tomoaki-suzuki/?lang=ja&ts=markdown "Posts by Tomoaki Suzuki")  
![リモートワークをセキュアにするリモートアクセス環境の作りかた](https://www2.paloaltonetworks.com/blog/wp-content/uploads/2023/02/prisma-accessztna1-0z.png)  
[Cybersecurity](https://www.paloaltonetworks.com/blog/category/cybersecurity-jp/?lang=ja&ts=markdown), [Products and Services](https://www.paloaltonetworks.com/blog/category/products-and-services-ja/?lang=ja&ts=markdown), [Remote Workforce](https://www.paloaltonetworks.com/blog/category/remote-workforce-ja/?lang=ja&ts=markdown), [Secure the Enterprise](https://www.paloaltonetworks.com/blog/category/secure-the-enterprise-2/?lang=ja&ts=markdown), [Secure the Future](https://www.paloaltonetworks.com/blog/category/secure-the-future-2/?lang=ja&ts=markdown)

## [リモートワークをセキュアにするリモートアクセス環境の作りかた](https://www2.paloaltonetworks.com/blog/2023/03/compare-prisma-access-and-onprem-remote-access-vpn/?lang=ja)

3年前の今頃、突如として発生した新型コロナウイルスの一連の騒動で、リモートワーク用に急遽構築・増設したオンプレミスのリモートアクセス環境をいまも利用している、というお客様は多いのではないでしょうか。そ...  
Mar 14, 2023  
By [Masaki Yamashita](https://www.paloaltonetworks.com/blog/author/myamashita/?lang=ja&ts=markdown "Posts by Masaki Yamashita")  
![PA-SeriesでSD-WANを実現 ― 既存PAで始めるネットワークとセキュリティ更改](https://www2.paloaltonetworks.com/blog/wp-content/uploads/2023/02/Figure01.png)  
[Cybersecurity](https://www.paloaltonetworks.com/blog/category/cybersecurity-jp/?lang=ja&ts=markdown), [Products and Services](https://www.paloaltonetworks.com/blog/category/products-and-services-ja/?lang=ja&ts=markdown), [SD-WAN](https://www.paloaltonetworks.com/blog/sase/category/sd-wan-ja/?lang=ja&ts=markdown), [Secure the Enterprise](https://www.paloaltonetworks.com/blog/category/secure-the-enterprise-2/?lang=ja&ts=markdown)

## [PA-SeriesでSD-WANを実現 ― 既存PAで始めるネットワークとセキュリティ更改](https://www2.paloaltonetworks.com/blog/2023/02/panos-sdwan/?lang=ja)

最近はセキュリティやネットワーク基盤をクラウド化するSASE導入を検討されるお客様が増えてきました。そのさい同時に「オンプレミスやオフィスで複数のISPを利用したい」、「デバイスを...  
Feb 14, 2023  
By [Koichi Kageyama](https://www.paloaltonetworks.com/blog/author/koichi-kageyama/?lang=ja&ts=markdown "Posts by Koichi Kageyama") ![失敗しないXDR導入: 導入時の検討事項は大きく2つに分けて考えよう](https://www2.paloaltonetworks.com/blog/wp-content/uploads/2022/12/xdr121edrndrxdr2.png)  
[Cybersecurity](https://www.paloaltonetworks.com/blog/category/cybersecurity-jp/?lang=ja&ts=markdown), [Endpoint](https://www.paloaltonetworks.com/blog/category/endpoint/?lang=ja&ts=markdown), [Secure the Future](https://www.paloaltonetworks.com/blog/category/secure-the-future-2/?lang=ja&ts=markdown)

## [失敗しないXDR導入: 導入時の検討事項は大きく2つに分けて考えよう](https://www2.paloaltonetworks.com/blog/2023/01/xdr-model-factor/?lang=ja)

最近、EDR(Endpoint Detection \& Response)やNDR(Network Detection \& Response)の拡張としてXDRが注目されています。ですが、XDRはDete...  
Jan 15, 2023  
By [Ken Kusunoki](https://www.paloaltonetworks.com/blog/author/kkusunoki/?lang=ja&ts=markdown "Posts by Ken Kusunoki")  
![PAN-OSの応答ページを多言語対応化する方法](https://www2.paloaltonetworks.com/blog/wp-content/uploads/2022/11/word-image-109.png)  
[Secure the Enterprise](https://www.paloaltonetworks.com/blog/category/secure-the-enterprise-2/?lang=ja&ts=markdown)

## [PAN-OSの応答ページを多言語対応化する方法](https://www2.paloaltonetworks.com/blog/2022/12/how-to-use-multilingual-urlf-blocking-page/?lang=ja)

働き方の多様化が進み、とくにグローバル企業では、英語や日本語以外の言語を使用される方が混在している環境も増えてきました。そうした環境では、ネットワーク機器からのエラーページがそれぞれの国の言葉になっていれば、情報システム部の運用負荷を減らせる可能性が高いでしょ...  
Dec 14, 2022  
By [Tadayoshi Suzuki](https://www.paloaltonetworks.com/blog/author/tasuzuki/?lang=ja&ts=markdown "Posts by Tadayoshi Suzuki")  
![IoTセキュリティソリューションの導入: 導入済みの次世代ファイアウォールを有効活用](https://www2.paloaltonetworks.com/blog/wp-content/uploads/2022/11/1-unit-42-iot-iot-202.png)  
[Cybersecurity](https://www.paloaltonetworks.com/blog/category/cybersecurity-jp/?lang=ja&ts=markdown), [IoT](https://www.paloaltonetworks.com/blog/category/iot-ja/?lang=ja&ts=markdown), [IoT Security](https://www.paloaltonetworks.com/blog/network-security/category/iot-security-ja/?lang=ja&ts=markdown), [Next-Generation Firewalls](https://www.paloaltonetworks.com/blog/network-security/category/next-generation-firewalls-ja/?lang=ja&ts=markdown), [Products and Services](https://www.paloaltonetworks.com/blog/category/products-and-services-ja/?lang=ja&ts=markdown), [Secure the Enterprise](https://www.paloaltonetworks.com/blog/category/secure-the-enterprise-2/?lang=ja&ts=markdown)

## [IoTセキュリティソリューションの導入: 導入済みの次世代ファイアウォールを有効活用](https://www2.paloaltonetworks.com/blog/2022/11/iot-security-with-existing-ngfw/?lang=ja)

昨今では、IoT（Internet of Things）の普及により、カメラ、プリンタ、センサ、電化製品、工作機械などの様々なデバイスを一元...  
Nov 14, 2022  
By [Daisuke Horie](https://www.paloaltonetworks.com/blog/author/daisuke-horie/?lang=ja&ts=markdown "Posts by Daisuke Horie")  
![ネットワークセキュリティのゲームチェンジャーとなるシグネチャに頼らない新しい防御方法](https://www2.paloaltonetworks.com/blog/wp-content/uploads/2022/10/image2.png)  
[Cybersecurity](https://www.paloaltonetworks.com/blog/category/cybersecurity-jp/?lang=ja&ts=markdown), [Products and Services](https://www.paloaltonetworks.com/blog/category/products-and-services-ja/?lang=ja&ts=markdown), [Secure the Enterprise](https://www.paloaltonetworks.com/blog/category/secure-the-enterprise-2/?lang=ja&ts=markdown), [Threat Prevention](https://www.paloaltonetworks.com/blog/category/threat-prevention/?lang=ja&ts=markdown)

## [ネットワークセキュリティのゲームチェンジャーとなるシグネチャに頼らない新しい防御方法](https://www2.paloaltonetworks.com/blog/2022/10/game-changing-protection-for-network-security/?lang=ja)

具体的には、悪いHTTPリクエスト(IPSのシグネチャ)、悪いURL(フィッシングやマルウェアなどのカテゴリのURLリスト)、悪いファイル(アンチウイルスのパターンファイル)、悪い...  
Oct 16, 2022  
By [Taku Maeda](https://www.paloaltonetworks.com/blog/author/taku-maeda/?lang=ja&ts=markdown "Posts by Taku Maeda")  
![既存インフラに優しいSaaSアプリの可視化と制約のない制御](https://www2.paloaltonetworks.com/blog/wp-content/uploads/2022/08/word-image-36.png)  
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## [既存インフラに優しいSaaSアプリの可視化と制約のない制御](https://www2.paloaltonetworks.com/blog/2022/09/saasinline-2/?lang=ja)

対策が進んでいる皆様、おめでとうございます、しっかりと制約なく可視化／制御できているのであればこの記事をお読みいただく必要はないかもしれません。これから対策を行われる皆様は、できるだけ既存インフラの構成に変更を加えず、制御を実施したい場合に...  
Sep 14, 2022  
By [Daisuke Terauchi](https://www.paloaltonetworks.com/blog/author/daisuke-terauchi/?lang=ja&ts=markdown "Posts by Daisuke Terauchi")  
![ADEMで解決、リモートワーク運用の課題](https://www2.paloaltonetworks.com/blog/wp-content/uploads/2022/08/word-image-24.png)  
[Products and Services](https://www.paloaltonetworks.com/blog/category/products-and-services-ja/?lang=ja&ts=markdown)

## [ADEMで解決、リモートワーク運用の課題](https://www2.paloaltonetworks.com/blog/2022/08/operational-issues-solved-by-adem/?lang=ja)

今までのオフィス中心の環境では、ほとんどの端末がオフィスからデータセンターを経由するなど同じ経路を通り各種リソースへアクセスする為、SaaSへのアプリケーションが遅いと問い合わせがきても、IT管理者が管理している機器の調査で大体の問題切り分けが終わりました。  
Aug 14, 2022  
By [Yoji Kanazumi](https://www.paloaltonetworks.com/blog/author/yoji-kanazumi/?lang=ja&ts=markdown "Posts by Yoji Kanazumi")  
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