Udp raw packetemplois

INTRODUCTION Le logiciel Packet Tracer permet d’élaborer des réseaux à l’aide de session multi-utilisateurs permettant de faire communiquer une topologie issue du logiciel Packet Tracer tournant sur un PC avec celle issue du même logiciel mais tournant sur un autre PC. En d’autres termes, Packet Tracer permet de favoriser le travail collaboratif en permettant le déploiement individuel de parties de topologie amenées à n’en faire qu’une.

Vous devrez faire ce travail (répondre aux questions et mettre les screen shot cicso paquet tracer avec) en 24h max

c’est un teavail de reseau sur le logiciel packet tracer pour les informaticiens

concevoir un serveur DHCP qui s’exécute sur une machine standard quelque soit son système d’exploitation. Votre serveur doit être capable de répondre aux requêtes DHCP en provenance des autres machines connectées au mê...Votre serveur doit être capable de répondre aux requêtes DHCP en provenance des autres machines connectées au même réseau local. concevoir en priorité une version standalone censée fonctionner sur un réseau sans accès à Internet. après concevoir une version censée fonctionner sur un réseau avec accès à Internet et/ou en concurrence avec un serveur DHCP existant. le serveur se basera sur une socket UDP...

recherche de administrateur réseau performant et de préférence FR pour bloquer des attaques tcp udp etc sur iptables ou voir pourquoi pas autoriser seulement des frames si possible afin de laisser aucune place aux attaques dos ddos.

...retoucher. Il faut se concentrer sur la mise en valeur des yeux, sans faire trop de retouche car le client doit reconnaitre les spécificités de chacun. Je vous envoie les fichiers originaux (avant) et finaux (après) de 2 regards comme exemple. Dites-moi ce que vous proposez. Cordialement, Dorothée PS: Je ne peux pas vous envoyer les fichiers raw car ils sont supérieurs a 25MB. Si vous faites le objet pour moi, sera-t-il possible de vous envoyer les fichiers raw?...

créer un projet de fin d'études en packet tracer (ipv6) + écrire un rapport du travail (en francais)

Bonjour, Nous sommes un petit serveur FIVEM, et nous subissons d'énormes attaques DDOS. J'ai commencé par bloquer les pays étrangers, bloquer les requêtes en fonction du nombre etc, mais ce n'est pas suffisant (via iptables). Je recherche quelqu'un en capacité de bloquer ces attaques sur le long terme. Notre serveur est chez OVH, et c'est principalement du DDOS UDP. Merci

Bonjour, Actuellement je dispose de 3 NAS Synology pour un total de 30TB de stockage. Sur un de mes NAS je souhaiterai faire tourner un bot discord qui est en JavaScript. Bien évidemment en local sa fonctionne en exécutant mon fichier bat sous Windows. J'ai mis dans monNAS mon Discord avec le .bat et j'ai ajouter le packet NODE JS. Je cherche a savoir comment lancer mon bot depuis le NAS ou le cas échéant executer le .bat qui est sur mon PC depuis le NAS. Merci

Bonjour J'ai des rushs de vidéo d'exercices de fitness avec un son de mauvaise qualité ( echo, souffle,..) et j'aurais besoin d'une personne pour me faire le montage - Mettre un logo - Retravailler le son ( sous adobe audition probablement, pour éliminer les echos) J'ai un petit budget, merci de me donner votre tarif par heure Voilà la première v...j'aurais besoin d'une personne pour me faire le montage - Mettre un logo - Retravailler le son ( sous adobe audition probablement, pour éliminer les echos) J'ai un petit budget, merci de me donner votre tarif par heure Voilà la première vidéo démo que j'ai fait moi même, ça sera ce genre de vid&ea...

I am going to participate to a big event called Salon Expo Manger Santé et Vivre Vert and I need a banner to promote my company. This banner will be used in many events. The company is called Zen. We offer raw, organic, local and vegan almond bites with antistress plants (adaptogens). They are almond bites. Bonjour, je m'apprête à participer au Salon Expo Manger Santé et Vivre Vert et j'ai besoin d'une bannière pour promouvoir mes produits. J'utiliserai cette bannière dans plusieurs autres événements. La compagnie s'appelle Zen. Nous offrons des bouchées d'amandes biologiques, crus, végétaliens et locaux, qui intègrent les plantes antistress (adaptogènes).

1. GENERALITES ̊L'objectif de ce projet est de développer un système de transfert de données (fichiers, par exemple) en utilisant uniquement le protocole de transport UDP mais avec les garanties de livraison typiques du protocole TCP • livraison fiable (aucun "morceau" ne manque) • transport avec contrôle de flux par fenêtres glissantes Votre projet est donc divisé en deux parties : 1. Implémentation du code client et serveur, dans le langage de votre choix 2. Rédaction d'un rapport, selon les règles décrites ci-dessous. Autant le code que le rapport seront évalués en considérant des éléments tels que la clarté et la modularit&eacu...

1. Un schéma global de la configuration du réseau. 2. Un schéma de la configuration du réseau pour chaque site. 3. La liste d'équipements, les câblages, etc. 4. Un tableau des coûts justifiés. 5. Le fichier Packet tracer. 6. Pour Partie 2, vous devez présenter votre proposition au démonstrateur. Assurez-vous de remettre la configuration du laboratoire à l'état initial.

Bonjour, je suis à la recherche d'une personne compétente (en anglais) qui serait apte à me fournir du contenu de qualité pour plusieurs projets traitant du sujet de l'alimentation crue (raw food) ? Ces futures livres électroniques ne feront que 25 à 30 pages maximum. Si vous êtes intéressé par ce projet, écrivez-moi, Cordialement, Phillip

Bonjour, je recherche un écrivain qui peut m'offrir du contenu pour plusieurs projets traitant de l'alimentation crue (raw food)

Hi, Looking for a designer to create a takeaway menu in A2 size 10 panels using InDesign. The menu will be featuring mainly Turkish Cuisine and may need to incorporate specific branding or color schemes. The menu should include menu items, prices, and descriptions. Ideal s...Ideal skills for this job include proficiency in InDesign, experience in menu design, and an eye for branding and color schemes. The job needs to be completed using by Indesin tables mainly. A2 size and 10 panels. If the job is completed nicely, we are happy to give more work in future. Attached pictures just a sample, to show what kind of job needs to be done. End of the work i need all the raw indesign folder as Package (that should includes Document Fonts, Links , pictures .idml, .indd, pdf ) Thanks fo...

I'm in need of an experienced web scraper, proficient in Python, to gather pricing data from a range of websites. Key Requirements: - The scraper must specifically target and extract pricing information. - The project involves scraping data from a moderate amount of websites (between 1 to 5), so the ability to efficiently manage multiple sources is a must. - The final delivery should be not just raw data, but organized and cleaned data. Ideal Skillset: - Proficient in web scraping tools and techniques, especially with Python. - Experience with handling and cleaning data. - Ability to manage multiple sources of data effectively. - Experience in working with pricing data is a plus. Please bid if you meet these requirements and can deliver efficient and well-structured result...

I'm seeking a skilled video editor to work on my theme page. The videos are usually modern in style and require a professional touch to bring t...editing modern-themed videos is essential. - Proficiency in adding engaging text overlays to enhance the viewer's experience. Ideal Skills and Experience: - Prior experience in editing theme page videos. - Strong grasp of modern video editing techniques. - Proven track record of creating engaging text overlays. - A keen eye for detail and ability to work efficiently. Your task will be to take the raw footage and transform it into visually striking, cohesive videos that align with the modern theme of our content. Your expertise in editing and adding text overlays will play a crucial role in making our videos appealing and engag...

I'm currently in search of an expert Hindi video editor capable of handling video files greater than 10 minutes in length. The ideal professional for this project should have: - Proven expertise in crafting narrative storytelling from raw video footage. - A solid command of the Hindi language. - The ability to work within strict project timelines and deliver high-quality work. Please note that this project does not require any special effects or animations. However, if your skill set includes these abilities, it could be beneficial for future projects. I look forward to receiving your bid and viewing your portfolio.

As a passionate photographer, I'm in need of a skilled photo editor who can handle some basic edits on my raw images. Here's a rundown of some key tasks for this project: - Use the preset I'll provide to adjust the images. - Correct the exposure and straighten my photos. - Execute slight white balans correction. The final images should be delivered in JPEG format for optimal use on my digital platforms at 2500px longest side Ideal Skills: - Solid understanding and hands-on experience of lightroom editing software. - Efficiency in handling raw file formats. - Proven expertise in basic adjustments and corrections. For this task, I'm not looking for advanced manipulation; however, an eye for detail and a knack for enhancing image quality is a must. Your s...

I'm in need of a skilled video editor to transform raw videos sent by our salon clients into concise, engaging videos for our Facebook community. Here are the details and requirements: - Editing Needs: You'll need to create a polished product from raw footage. This includes tasks such as trimming footage, adding appealing transitions, scoring with fitting music, and performing color correction and enhancement. I'll provide samples for reference. - Final Video Length: Each final video should be less than 1 minute. It's important to sustain viewers' interest and communicate the salon's ambiance and user reviews effectively in this short time. - Text Overlays: The use of text overlays or captions will be determined by each specific video. Again,...

...not REQUIRED Here is a URL to the host Justin Dossey, Vince Hall facebook for a picture of them: , You can use a picture from social media or from the video podcast itself The guests are Janel and Don. Please use a picture from the video podcast itself for each of them Here is a URL to the google drive with some of the raw video/audio files for context or ideas OR to get portraits of the hosts or guests: Maybe add the text to the thumbnail: Mastering Virtual Real Estate with Trust & Persistence First good entry we will award...

As a soon-to-be newlywed, I am in need of a professional video editor who can add a spark to my wedding video. The video already holds our cherished memories, but your creative touch can make it even mor...already holds our cherished memories, but your creative touch can make it even more memorable. What I need: - Skilled application of visual effects to the existing video footage. Ideal Skills: - Extensive experience with wedding video editing. - Mastery in the art of visual effects - while you will have creative license, be aware that the overall feel of the video should be elegant, enhancing the raw footage without overpowering it. Please note, 3D effects are not required for this project. However, your professional suggestions for other effects, based on your experience, ar...

...proficient professional to handle monthly management tasks for my blogging website. Your responsibilities will be quite varied, but mostly technical and strategic, as I will be taking care of content creation. Here's what I need assistance with: - Virus scanning: To keep my site secure and functional. - SEO optimization: To drive more targeted traffic to the site. - Content editing: I'll provide the raw content, and I need you to make sure it shines before it's published. - Blog Posting: Posting the content I provide regularly. - Design changes: Infrequent but vital. Anticipate 2-3 modifications monthly. - Social media promotion: Increasing site visibility and driving more traffic. Ideally, you'd have substantial experience managing and optimizing blogging s...

I'm in need of a proficient video editor who can turn my raw footage into long (more than 10 minutes), quality videos. The videos will be corporate and YouTube content. • Key Skills: Proficient in video editing softwares. • Experience: This is not such a big deal. If the freelancer knows how to edit, that’s all what matters. A sample edit will be appreciated.

I'm looking for a skilled video editor to work on a short video Only around 3 minutes. The main tasks are trimming and cutting the video, adding text or captions in a modern and minimalistic style, and removing background noise. High Quality MP4 Format Output. I will give you around 14 raw recording files(Mp4) ranging from 5 sec to 1 min. of 2 people doing business introduction. They come in order all you have to do is trim, edit, and make nice transition between sentences and prepare for full production as a 1 single video. There will be Text displayed in bottom left showing Name and Title or 2 people speaking for about 5 sec. This should not take you any longer than 1.5 - 2 hours. Zip File is in Google Drive you can download which is less than 1GB. Key Requirements: - Prof...

...two main aspects I'm interested in are network traffic analysis and packet filtering. Key Responsibilities: - **Network Traffic Analysis:** The professional will need to thoroughly analyze the network traffic recorded in the PCAPNG files. This analysis should be aimed at optimizing the network performance. - **Packet Filtering:** Additionally, the expert will be required to implement packet filtering on the network traffic in the PCAPNG files. The purpose of this filtering is to enhance network security and troubleshoot any network-related issues. Ideal Skills: - Deep understanding of network protocols and packet structures - Hands-on experience with PCAPNG file analysis - Proficiency in network traffic analysis and packet filtering - Strong pr...

I need a proficient Cisco Packet Tracer developer to take on a threefold task. This includes the configuration of a network, troubleshooting any connectivity issues, and developing comprehensive network simulations. An additional requirement is to create an AD-hoc network where nodes should have the ability to sense each other. There are no strict stipulations outlined for the communication of these nodes. The ideal freelancer for this project should be competent in Cisco Packet Tracer and have an in-depth understanding of Network Configuration, Network Simulation, and Troubleshooting. The main goal for this project is educational use, teaching our team better understand how to use Cisco Packet Tracer effectively. Your tasks will provide a practical education tool for...

I'm in need of a logo designer to create a modern and minimalist logo for my real e...include: - The logo - Logo in Vertical/Horizontal/Square shapes with/without the company name - The raw files, preferably in PSD or CDR format, though I'm open to other software.(For all formats you are providing) Key requirements: - Indians Preferred knowing Hindi(Better Communication) - Ability to design a modern and minimalist logo - Good understanding of branding and marketing - Experience in real estate or digital marketing sector is a plus - Proficiency in graphic design software Please provide examples of previous logo work or design projects in your bid. Looking forward to seeing your creative ideas! The ideal candidate should be able to bring my vision using a simple text or a...

I'm in need of an expert in Machine Learning with a strong proficiency in Python. The successful candidate will be assisting me with various stages of my project. Key Tasks: - Data Preprocessing: You will be tasked with cleaning, transforming, and preparing the raw data for analysis. - Model Development: The creation, fine-tuning, and optimization of the machine learning models lies within this area. - Model Evaluation: Once the model is built, you will be responsible for evaluating the model's performance and making necessary adjustments. The ideal candidate for this project should have: - Advanced proficiency in Python with a strong background in Machine Learning. - Prior experience with data preprocessing, model development, and model evaluation. - Excellent problem-s...

I'm seeking an experienced surface designer to create striking geometric patterns for fabric intended for young adults. The designs should be bold, modern, and versatile, reflecting the dynamic tastes of this demographic. Key Responsibilities: - Create unique, high-resolution geometric designs for fabric. - Ensure designs are suitable for machine printing. - Provide files in both raw and print-ready formats. Ideal Skills: - Proficiency in Adobe Illustrator or similar design software. - Experience in textile design, particularly for young adults. - Strong sense of current trends in the fashion and textile industry. - Able to work with minimum supervision and meet deadlines. Previous work samples would be appreciated. Let's create fabric designs that will turn heads!

We are in need of a skilled web app developer to create an AI-powered text classification system. We are looking for a developer to make a web app that is able to accept any kind of raw text or a pdf and extract raw text from it. So, the initial page can have 2 options for Data Source: Raw Text and PDF (We might add support for other input formats as well in the future). Next, once we have the text available, it should split the text based on the lines. It can split on the full stop character. And then every line must be sequentially given to a ML model. This would be a text classification huggingface model, which can be instantiated via this code: from transformers import pipeline pipe = pipeline("text-classification", model="legal-text-classif...

I'm seeking a knowledgeable network architect with proficiency in Cisco packet tracer to design a comprehensive network architecture for our global enterprise. This project consists of five distinct networks that should be expertly interconnected. Each Global Enterprises office will have its own Local Area Network (LAN) designed to provide network connectivity for all devices within that location. These LANs will be interconnected to form a Wide Area Network Key Features you will implement: - Firewall Configuration - VLAN Setup - VPN Configuration - Routing Protocol Configuration - DHCP Server Integration - Intrusion Detection and Prevention Systems (IDS/IPS) For monitoring and management purposes, it is crucial that a successful ping request can be made. Furthermore, ...

...are looking for a talented Video Editor to join our dynamic team to work on a variety of projects including short-form social media videos and longer, in-depth informational or documentary-style videos. The ideal candidate will possess strong technical skills in video editing, a creative flair, and a passion for storytelling through visual content. Responsibilities: - Edit and assemble recorded raw material into a suitable, finished product ready for broadcasting. The material may include camera footage, dialogue, sound effects, graphics, and special effects. - Ensure the logical sequencing and smooth running of the final video according to the director's specifications. - Collaborate with stakeholders from production to post-production process on the style and pace of vid...

I'm in need of a skilled video editor, highly conversant with the latest trends and transitions, to produce enga...service. Key Requirements: • Proven experience in editing social media videos, preferably Instagram. • Strong understanding of latest video editing techniques and trends. • Possess creativity and a strong keen eye for aesthetics and details. • Familiarity with Instagram's algorithm and viewer engagement strategies. • Must be able to deliver on tight deadlines. Your main task will be transforming raw video footage into a final product ready for Instagram. Successful freelancers will need to use their skills to trim footage segments, add necessary effects, and make suitable transitions to craft a final product that aligns with my br...

I'm in need of a professional video editor to help with creating educational content for YouTube. Key Responsibilities: - Edit raw footage into engaging, educational videos - Ensure videos are suitable for a YouTube audience - Deliver completed videos within agreed timelines Ideal Skills: - Proficient in video editing software (e.g. Adobe Premiere Pro, Final Cut Pro) - Previous experience editing content for YouTube - Understanding of educational video formatting The perfect candidate will have a keen eye for detail, a creative approach to editing, and a good understanding of what makes YouTube content successful. I'm looking for someone who can turn my raw footage into polished, engaging content that will captivate and educate my audience.

I'm seeking a skilled video editor to work on my theme page. The videos are usually modern in style and require a professional touch to bring t...editing modern-themed videos is essential. - Proficiency in adding engaging text overlays to enhance the viewer's experience. Ideal Skills and Experience: - Prior experience in editing theme page videos. - Strong grasp of modern video editing techniques. - Proven track record of creating engaging text overlays. - A keen eye for detail and ability to work efficiently. Your task will be to take the raw footage and transform it into visually striking, cohesive videos that align with the modern theme of our content. Your expertise in editing and adding text overlays will play a crucial role in making our videos appealing and engag...

I'm seeking an expert familiar with Cisco Packet Tracer to create a simulated home network. What will set you apart: - Proficiency in network simulation using Cisco Packet Tracer - Experience in designing home networks Your primary task will be: - Simulating a home network environment Please note that devices to be included in the network have not been specified. Your expertise in home network design will be crucial to provide a robust simulation.

I have a substantial Excel spreadsheet that requires competent attention. I'm on the lookout for someone who's proficient in: - Data entry - Data cleaning Your role will primarily involve entering various types of data that's currently on an Excel spreadsheet. Despite the data being available, it's in a raw unclean format that needs some cleaning. The ideal freelancer is someone who's used to working with Excel and recognizing inconsistencies, errors, and redundancies. Additionally, anyone versed in: - Proficient in Excel usage - Strong attention to detail - Experience in data cleaning - Strong data entry skills would be extremely helpful in achieving the goals of this project.

Seeking an adept video editor proficient in advanced editing techniques, including color grading and effects, for YouTube content. Responsibilities: * Edit raw footage for a polished, professional YouTube output * Utilize advanced techniques like color grading and unique effects * Create eye-catching thumbnail images to enhance video promotion * Ensure edits meet YouTube's quality standards Requirements: * Proficiency in advanced video editing and thumbnail design * Familiarity with YouTube algorithms and successful video characteristics * Creativity, resourcefulness, and ability to meet social media deadlines * One video per week and four videos per month.

I am in need of a professional and talented video editor to edit my online course videos. The raw material to be edited is 1 hour long but there will be more work available if I am satisfied with the editing. The required style is a traditional lecture format - simple, clean, and incredibly clear. Ideal Skills: - Proven experience in video editing - Excellent understanding of timing and storytelling in editing - Proficiency using editing software Tasks to be completed include but are not limited to: - Trimming footage and putting together the sequence of the course (I will provide written scripts of the course to match) - Zooming picture in and out when needed - Incorporating creative inputs, enhancing video and colour grading for consistency Bids are welcome from experi...

As an AI-driven project, I am seeking a freelancer experienced in machine learning to implement TensorFlow, scikit-learn, and PyTorch open-source tools to analyze and predict certain events. My project involves systemically analyzing data from different sensors, namely temperature (temp), relative humidity (RH), and other miscellaneous sensors...processing Your task would be to design systems that generate real-time notifications upon the occurrence of these behaviors. Thus, having a background in notification systems or related technology gives you an edge for this project. However, most importantly, I need someone with a keen eye for detail, a creative mind for innovative solutions, and a passion for artificial intelligence. Let's turn raw data into meaningful event predic...

...as speed, temperature, equipment running time, and so on. We have the code available with us, you just need to make it work for another dataset and run it in Ubuntu. Prospective freelancers must have skills and experience in the following areas: - Docker, for providing the backbone of our decentralized system - Federated Learning, to collectively improve our model's performance without sharing raw data - Working with and analyzing operational data - Implementing predictive models, in this case a 3-layer feed-forward neural network and stochastic gradient descent (SGD) The final deliverable will be a robust and efficient predictive maintenance system that effectively uses operational data to improve machine downtime prediction. Your contribution will be essential in minimi...

I'm seeking a proficient video editor with experience in editing political campaign videos. The ideal candidate will: - Have a strong background in video editing, specifically with political content - Be able to translate raw campaign footage into engaging, high-quality videos - Have a keen eye for detail and proficiency in storytelling - Be able to work collaboratively and adhere to strict deadlines

I am seeking a talented individual to assist with a Power BI Data Visualization project, focused on displaying sales data. Your expertise will aid in the creation of comprehensive monthly summaries that will aid decision-making processes. Key Requirements: - Proficiency in Power BI for data visualization - Experience with sales data analys...monthly summaries that will aid decision-making processes. Key Requirements: - Proficiency in Power BI for data visualization - Experience with sales data analysis - Ability to create detailed monthly summaries The perfect candidate would be a seasoned Power BI user, who has had previous experience aiding businesses in making use of their sales data. The successful freelancer will help transform our raw data into easily interpretable monthly ...

...growth.* *You will be paid $10 usd for every video-edit.* *The process is super streamlined.* *All videos are tailored by me -> you get the raw footage, edit it and upload the edited videos in a separate folder. I expect a simple thumbnail that fits the ratio 1:1 on Instagram feed. All videos should be edited in 9/16 format for Fullscreen experiences on IG Reels + TikTok.* *Please reach out to me here or instagram (roman_marron) and tell me a bit about yourself, your current situation and show me previous work.* ***Important***: *I expect a sample to quality check your work, if I find qualified for the position, I will provide you with the raw 60-seconds footage.* *Fluent English is a must + you must be able to jump on a Zoom call to go through the onboarding proc...

I've got 1-3 hours of raw footage that needs to be skillfully edited down. The core essence of footage should be preserved while unnecessary parts are trimmed away. The end-product should be clear, concise, and engaging for the audience. Features & Requirements: - Basic video editing including cutting, trimming and sequencing - No additional visual effects or graphics required - Ability to work within a specified deadline and communicate well Ideal Skills: - Advanced proficiency in video editing software like Adobe Premiere Pro, Final Cut Pro etc. - A keen storytelling perspective to maintain the core narrative - Patience to sift through 1-3 hours of raw footage - Excellent attention to detail. Experience in basic video editing without any fancy effects is ide...

I'm in need of a skilled video editor, highly conversant with the latest trends and transitions, to produce enga...service. Key Requirements: • Proven experience in editing social media videos, preferably Instagram. • Strong understanding of latest video editing techniques and trends. • Possess creativity and a strong keen eye for aesthetics and details. • Familiarity with Instagram's algorithm and viewer engagement strategies. • Must be able to deliver on tight deadlines. Your main task will be transforming raw video footage into a final product ready for Instagram. Successful freelancers will need to use their skills to trim footage segments, add necessary effects, and make suitable transitions to craft a final product that aligns with my br...

...lib" "" "" ) func padProbes(mainLoop *) error { (nil) // Parse the pipeline we want to probe from a static in-line string. // Here we give our audiotestsrc a name, so we can retrieve that element // from the resulting pipeline. pipeline, err := ( "audiotestsrc name=src ! audio/x-raw,format=S16LE,channels=1 ! fakesink", ) if err != nil { return err } // Get the audiotestsrc element from the pipeline that GStreamer // created for us while parsing the launch syntax above. // // TODO: There are some discrepancies still between methods that check the nil // value and return an error, versus those that will instead just return nil. // Need to settle on one way or the

I need a package designer for my Indian pickle brand, Aunty Pickle. Our 50-gram packet needs a refresh which aligns with the ethos of our product. Key Requirements: - Incorporate pickles and elements of Indian culture in the design. - The color scheme should be bold and striking, capturing the robust flavors of our product. - Typography should be bold and modern, representing the evolving and contemporary brand image. Ideal Skills: - Experience with food packaging design, preferably in the Indian food market. - Strong grasp on modern typography. - Can creatively incorporate cultural elements in design. - An understanding of color psychology, and experience using bold and striking color palettes.