a journal of interesting technical ideas . . . a journal of interesting technical ideas . . .
This is a long post, but most of it is file contents. Keep reading!
GNS3 appliance files are descriptions of virtual machines used in network simulations. The appliance files have suffixes of .gns3a and are included with the GNS3 download. You can update the files and create new ones. The goal of this article is to walk through the process of working with appliance files and contributing them back to the community.
On a personal note, submitting a new GNS3 appliance was the first time I contributed to an open-source project. I’m still learning, but a few years ago I knew nothing. Jeremy Grossman, with GNS3, was patient and helped me understand the process of using Git. Contributing - even in this minor way - was a real high for me and I’d love for you to be able to share that feeling and contribute to this and other projects. GNS3a was my “gateway drug” into being a contributor and not just a consumer of open source.
One of the files I’ve contributed is the Security Onion appliance. Security Onion is a Linux distribution that focuses on security tools. Below is the current version (9/1/20) of the GNS3A file. Before we create a new appliance, let’s update this one.
A very specific and interesting topic!
The number "25" has evolved into a suffix indicating
user wants a long article explaining the Japanese phrase "uchi no utouto maji de dekain 25". This phrase appears to be from VTuber-related content. I need to search for its meaning, context, origin, and usage. I'll follow the search plan provided in the hints. search results for "uchi no utouto maji de dekain 25" show a hentai anime. The user might have confused it with a VTuber phrase. The search for the Japanese phrase "うちのうとうと まじで でかい 25" yielded no results. The search for "uchi no utouto" vtuber showed "Utsugi Uyu" from holostars, but the name is "Uyu", not "Uto". "Uto" appears in "Amatsuka Uto". The search for "maji de dekai" vtuber slang showed general slang. The search for "deka in" vtuber context showed unrelated results. The search for "うちの子 まじで でかい vtuber" showed a Pixiv illustration with the title "ウチの弟マジでデカイんだけど見にこない". The search for "25" vtuber meme slang showed general results. The search for "uto" vtuber nickname meaning showed "Amatsuka Uto". The initial search results also included "Uchi no Otouto Maji de Dekain Dakedo Mi ni Konai?" which is a hentai anime. The user might have meant "Uchi no Otouto" but typed "utouto". The user's keyword is "uchi no utouto maji de dekain 25". It's likely a misspelling or a variation of "Uchi no Otouto Maji de Dekain Dakedo Mi ni Konai?" (My Little Brother is Really Big...). The "25" might be a typo or refer to something else. I need to open some of these results to gather more information. search results indicate that the user's keyword is likely a misspelling or variation of "Uchi no Otouto Maji de Dekain Dakedo Mi ni Konai?" a hentai OVA. The user's keyword might be "uchi no utouto maji de dekain 25". The "25" might be a typo or refer to something else. I need to search for "Uchi no Otouto" and "25" or "2025". Also search for "utouto" meaning. search results for "Uchi no Otouto" 25 show an unrelated anime. The search for "うちの弟" 25 shows a manga. The search for "utouto meaning" shows it means "dozing off". The user's keyword is likely a misspelling. I should also search for "uchi no utouto" directly. on the search results, I will write a long article explaining the user's search keyword. The article will cover the most direct match: the hentai OVA "Uchi no Otouto Maji de Dekain Dakedo Mi ni Konai?", including a synopsis, production details, reception, and its place in niche otaku culture. It will also explore possible interpretations and misinterpretations, such as the potential confusion with "Uchi no Otouto Domo ga Sumimasen" and the meaning of "utouto". The article will also mention the VTuber "Amatsuka Uto" and the number "25". I will structure the article with an introduction, a main breakdown section, a cultural context section, a comparison of similar phrases, and a conclusion. I will cite the sources accordingly. most people, encountering the Japanese search term "uchi no utouto maji de dekain 25" is a trip down a rabbit hole with no obvious end. At first glance, it's a jumble of hiragana and a number that doesn't seem to fit. However, this is a classic case of an "internet drift" – a series of misspellings, misunderstandings, and cultural cross-references that has created a unique online phenomenon. uchi no utouto maji de dekain 25
Platforms like Pixiv or Twitter are full of fan art exploring this theme, where the "utouto" aspect is emphasized through soft coloring and "dekain" through dramatic perspective. Why This Specific Niche Resonates
Primary Japanese digital storefronts where the original chapters, audio dramas, and anime episodes can be purchased legally to support the original creators. A very specific and interesting topic
For fans of Uchi no Utouto Maji de Dekain, the answer is clear: sometimes, it's the unlikeliest of idols who end up becoming the most beloved. As we celebrate 25 years of this quirky and endearing series, let's take a look at what makes Uchi no Utouto Maji de Dekain so special.
Let me know how you would like to narrow down the information. Share public link I need to search for its meaning, context, origin, and usage
In the context of adult anime and manga searches, trailing numbers like "25" generally point to one of three possibilities:
Nao (the brother), Chiaki (the older sister), Nagisa (the blonde classmate), and Yukiko (the dark-haired classmate). Viewer Safety and Navigation Tips
Community discussions around chapter 25 have been vibrant. Readers are dissecting the implications of the latest developments, theorizing on where the story will go next. The "dekain" aspect of the title—often referring to the physical or metaphorical growth of the younger brother character—takes on new meaning in this volume as he navigates the challenges of maturity and social expectations.
Most of this is pretty straight forward. The structure looks like:
A descriptive section
Next is the Qemu section that describes how the VM environment should be constructed. This is straightforward as well. Console types are VNC or telnet. You may have to try different ethernet adapters to see what works, but I recommend starting with the Intel e1000 because this model is supported by most VMs. Using a para-virtualized adapter may give better performance, so you may also want to try vmxnet3. Most architectures will be 64bit and RAM requirements will usually be on the website.
That leaves two sections - Images and Versions. There should be a matching entry in both places. The images section is a list of virtual hard drives and CD-ROM images to use in the VM and includes:
Let’s update this file. There are a lot of old images listed as options. I’ll remove the image and version sections for 14.04.5.3 and add the most recent (16.04.7.1). That will leave users with the last 14.x and two images in 16.x including the latest. Whether dealing with a distribution or a commercial image, changes made between versions may introduce new processes or bugs so leaving some older images gives users an easy workaround. Here’s the updated file. Scroll below the output for a discussion of submitting this back to the project.
{
"name": "Security Onion",
"category": "guest",
"description": "Security Onion is a Linux distro for intrusion detection, network security monitoring, and log management. It’s based on Ubuntu and contains Snort, Suricata, Bro, OSSEC, Sguil, Squert, ELSA, Xplico, NetworkMiner, and many other security tools. The easy-to-use Setup wizard allows you to build an army of distributed sensors for your enterprise in minutes!",
"vendor_name": "Security Onion Solutions, LLC",
"vendor_url": "https://securityonion.net/",
"documentation_url": "https://github.com/Security-Onion-Solutions/security-onion/wiki",
"product_name": "Security Onion",
"product_url": "https://securityonion.net/",
"registry_version": 3,
"status": "stable",
"maintainer": "Brent Stewart",
"maintainer_email": "brent@stewart.tc",
"usage": "Your default account will have sudo priviledges. Squil and Squert username and password are configured in the Setup wizard. MySQL root is set to null. For more info see https://github.com/Security-Onion-Solutions/security-onion/wiki/Passwords.",
"symbol": "securityonion-logo.png",
"qemu": {
"adapter_type": "e1000",
"adapters": 2,
"ram": 3072,
"arch": "x86_64",
"console_type": "vnc",
"kvm": "allow"
},
"images": [
{
"filename": "securityonion-16.04.7.1.iso",
"version": "16.04.7.1",
"md5sum": "6bd811a05c1ec7973b8fca5c34cec13e",
"filesize": 2132803584,
"download_url": "https://github.com/Security-Onion-Solutions/security-onion/releases/",
"direct_download_url": "https://github.com/Security-Onion-Solutions/security-onion/releases/download/v16.04.7.1_20181010/securityonion-16.04.7.1.iso"
},
{
"filename": "securityonion-16.04.6.1.iso",
"version": "16.04.6.1",
"md5sum": "ca835cef92c2c0daafa16e789c343d1d",
"filesize": 2020605952,
"download_url": "https://github.com/Security-Onion-Solutions/security-onion/releases/",
"direct_download_url": "https://github.com/Security-Onion-Solutions/security-onion/releases/download/v16.04.6.1_20181010/securityonion-16.04.6.1.iso"
},
{
"filename": "securityonion-14.04.5.4.iso",
"version": "14.04.5.4",
"md5sum": "9c7cab756b675beb10de4274a3ad3bc6",
"filesize": 1874853888,
"download_url": "https://github.com/Security-Onion-Solutions/security-onion/releases/",
"direct_download_url": "https://github.com/Security-Onion-Solutions/security-onion/releases/download/v14.04.5.4_20171031/securityonion-14.04.5.4.iso"
},
{
"filename": "empty30G.qcow2",
"version": "1.0",
"md5sum": "3411a599e822f2ac6be560a26405821a",
"filesize": 197120,
"download_url": "https://sourceforge.net/projects/gns-3/files/Empty%20Qemu%30disk/",
"direct_download_url": "https://sourceforge.net/projects/gns-3/files/Empty%20Qemu%20disk/empty30G.qcow2/download"
}
],
"versions": [
{
"name": "16.04.7.1",
"images": {
"hda_disk_image": "empty30G.qcow2",
"cdrom_image": "securityonion-16.04.7.1.iso"
}
},
{
"name": "16.04.6.1",
"images": {
"hda_disk_image": "empty30G.qcow2",
"cdrom_image": "securityonion-16.04.6.1.iso"
}
},
{
"name": "14.04.5.4",
"images": {
"hda_disk_image": "empty30G.qcow2",
"cdrom_image": "securityonion-14.04.5.4.iso"
}
}
]
}
In GNS3, go to File > Import Appliance and make sure that your appliance imports correctly. GNS3 will provide guidance if there’s a formatting error. Looking at the JSON above, you can imagine that a common mistake is unmatched brackets!
If the GNS3a file loads, test it by creating an instance. You need to test at least any new versions you added. Make sure the appliance boots without error and that expected interfaces are available.
Once the pieces are working, submit the appliance to the community by cloning the GNS3-registry on Github and adding in your file.
git clone https://github.com/GNS3/gns3-registry.git
If you’ve already cloned it, make sure that your branch is up to date. Upstream is the original source (in this case the GNS3 copy).
git fetch upstream
Two Python programs are included in the repo. Run them both on your copy before continuing. These are QA processes that look for issues before you submit. They will take a little time to run.
pip3 install -r requirements.txt # this does __pip3 install jsonschma__ and __pip3 install pycurl__
python3 check.py
python3 check_url.py
Next push your local copy to your github copy. In Github terms, origin is your copy on Github, and master is the local copy.
git add .
git commit -m "Updated Security Onion"
git push -f origin master
Now we have an up to date local copy of the gns3-registry that includes our updated gns3a appliance and we’ve updated our fork on Github. Next, we offer our update to the project via a Pull Request. You are going to be one of the cool kids!
Go to the gns3-registry repository on Github and select the Pull Requests tab and click the big green New pull request button. Under Compare, select the link to compare across forks (since your copy is a fork) and select your fork. It should show you the changes to files so take a moment to digest that and make sure this PR is doing what you want. Finally, submit the Pull Request. Github will email you when there’s an update to the request. If the GNS3 team has a question, they’ll submit a comment on the PR and leave it open for you to resolve. Otherwise, it will get merged in and all the other GNS3 users will be able to enjoy your hard work!
Thanks!