Top 12 PHP Security Tips For Linux Admins
Are you also a Linux user? Here's an article to help you protect your systems against uninvited intruders.
⸻ 1. Purpose and Business Objective The purpose of this system is to serve as a central invoice control, buying price management, and purchasing intelligence platform. The system must: • Automatically receive supplier invoices by email • Validate invoices line by line against historically correct buying prices • Detect pricing, discount, and quantity errors • Support controlled resolution of invoice mismatches • Handle credit notes (full and partial) • Maintain a permanent, central catalogue of buying prices • Store purchase quantities and purchase amounts • Provide dashboards and reporting for finance and management • Be usable on both desktop and mobile (responsive web application) The system replaces: •...
I m working in voip in Morocco from 2014 I have a system of asterisk Isabel the problem is when my client send me trafic give him an erreur 486 must be 503 In this case my client lost his traffic https://www.freelancer.com/users/l.php?url=https:%2F%%2Fusers%%3Furl%3Dhttp:%252F%%252Fpt%252FA42hBUju%26sig%3D50c67e1b3a7f27f20771fd2ee320f07b9eb302904f9e19edea3a28d328aafbdf&sig=dbffe148af4b5367f232a97a6acda81aea4364dfabcb09ccf07b413f3f1c3be9
...mit team og jeg en komplet hjemmeside med et system programmeret i PHP & MYSQL, som skal fungere som et mellemled. Det som vi i virkeligheden ønsker os, er at sætte gang i hjulene på onlinedelen, og dermed få et godt tilbud til en fornuftig pris. Vores virksomhed sikre den private handel bliver gennemført præcis efter den indgåede aftale, ved at sælger og køber udføre handlen igennem vores platform, og dermed udelukker muligheden for svindel. Vi ønsker at hjemmesiden skal se moderne ud og helst noget der passer til vores branche. Der skal være gode muligheder for videreudvikling på senere tidspunkt. Vi ønsker at bruge farven blå, hvid og sort. Det skal se godt ud og kunden skal ...
The creation of a virtual office
...nu valgt at indtage det svenske marked inden for fritlægning af billeder. Vi har været til stede i Sverige i et års tid, og ser et kæmpe stort potentiale i dette marked. Vi leder derfor nu efter en freelancer, som brænder for opsøgende salg. Du skal være resultatorienteret, energisk og god til at slå dørene ind hos potentielle nye kunder – både mellem og store virksomheder. Vi står for alt administration, håndtering af ordrer, fakturering og vedligeholdelse af digital platform – så du skal blot fokusere på at sparke dørene ind hos nye kunder. Du har selv ansvaret for at finde og opsøge potentielle kunder. Vi forventer at du: • Kan tale og skrive flydende svensk &...
Opgradering af booking system fra installation program til online booking system mysql Kan laves med komplet engelsk sprog men ved mulighed for at vi kan lave ekstra sprog som man kan vælge som kunde. Har beskrevet lidt om det i vedhæftet pdf.
Adempiere Finance Functional Consultant for desigining Ecommerce & Accounting System
Vi har brug for at få udviklet en mobil-APP og en hjemmeside til administration og oprettelse af brugere. Brugere skal kunne oprette sig med et username, samt indtaste generel informationer som navn, adresse, mail, telefonnummer, alder og køn. Når brugeren har oprettet sig med et username, skal brugeren kunne søge på andre brugere KUN ved hjælp af brugerens username. Søges der efter et username som findes, skal brugeren kunne skrive en besked til den anden bruger i et almindeligt beskedsystem, som SMS/imessage. Beskedsystemet skal findes i APPen. Der vil løbende være brug for udvikling, hvorfor det er et længere projekt, men ovenstående er starten.
Krav specifikation er på plads - Den opdateret version kommer senere.
Jeg har vedvarende arbejde relateret til vores tidligere projekt ' pizza online ordrering system with sms gataway '
Hej, Mit navn er Frederik og jeg har fået en idé der omhandler odds/spille på kampe. Her er lidt information omkring projektet: At spille på fodboldkampe, tennis kampe, NBA og andre sportsgrene er populær i alle aldre nu til dags,...spillere som størstedelen af deres forslag, er vundet. Kunder på siden, der søger forslag, skal betale for at se premium spillernes forslag. Det skal siges det er gratis at oprette sig på siden og at oprette forslag. Har du spørgsmål, svarer jeg gerne, så fyr løs! Men det jeg søger, er et tilbud, højst sandsynlig af en programmør. Vi leder nemlig efter en der kan lave et system der passer til projektet. Altså et system der kan ...
...significant technical expertise in server management, Java, database administration, and cloud services. Before diving in, could you clarify a few details to better tailor the guide Project Deliverables Server Deployment: Deploy the latest Signal Server (Java) and WebRTC signaling (Node.js/Socket.io) Configure server dependencies (Java, PostgreSQL/Redis, Maven) • Infrastructure: Are you planning to deploy on a our server • Version: need the latest official Signal Server (Java-based) • Customization : rebrand the app or simply run a private instance Configuration & Customization: Set up config .yml for production Optional branding or private instance configuration ________________________________________ Core System Requirements The official Signal ...
UNI Business Solutions Pvt. Ltd. is organizing a face-to-face SAP BASIS up-skilling program in Noida and is looking to hire an experienced freelance SAP BASIS trainer to lead this program. This is a classroom training engagement for a structured 4-week program designed for freshers and early-career professionals, with a strong focus on practical learning, system administration, and real-world exposure. Mode: Classroom Training (Face-to-Face) Location: Noida, India Engagement Type: Freelance Duration: 4 Weeks Participants: Freshers / Entry-level professionals Program Type: Corporate/Classroom Training UNI Business Solutions will arrange the venue and basic infrastructure. Trainer must specify technical prerequisites (systems, internet, software, VM requirements, access...
I am assembling a full-stack solution that ingests live financial databases, open-source macroeconomic feeds, and user-submitted figures, then turns all of it into forward-looking insights. The core of the product is an AI layer that delivers predictive analytics and runs configurable scenario simulations; the results need to surface instantly inside an intuitive web dashboard where users create and save their own reports and visual layouts. What I need from you is an end-to-end build: • Data layer – connectors that automatically pull structured and unstructured data from the three source categories above, plus a storage design that can scale as historical records grow. • ML & simulation engine – time-series forecasting models, Monte Carlo or agent-based simula...
I need a mobile app that can create and print two identical copies of every bill—one for the customer and one for the driver—using a TVS thermal printer. Each bill will carry our company logo and a system-generated, unique barcode. When that barcode is scanned with any standard phone camera or scanner, the duplicate copy of the bill must open immediately on the user’s device. The workflow is simple: fewer than twelve fields are filled in for each transaction, the app saves the data, produces the two printouts, and stores a cloud-accessible version linked to the barcode. A straightforward username-and-password login keeps everything secure. Key points the finished solution must cover: • Seamless Bluetooth or USB communication with the TVS thermal printer (oth...
...integrated application that lets my garment stores handle sales, stock and bar-codes without hopping between tools. At its heart is a full Billing module: I need a drag-and-drop invoice designer where I can drop in our logo, brand colours and choose which fields go where. During checkout the cashier should be able to scan a barcode—USB gun, Bluetooth scanner or even the mobile camera—and watch the system pull the item, auto-calculate price, discounts, GST or other taxes, then accept payment by Cash, UPI or Card. Once payment posts, the app must generate an invoice automatically (manual, milestone or scheduled runs are also fine) and offer a print-ready PDF. Real-time payment status, plus overdue reminders, keep us on top of receivables. The same barcode engine need...
...time-domain and frequency-domain simulations in MATLAB/Simulink, and iteratively tuning the gains until the closed-loop behaviour meets standard performance indices. Because the emphasis is strictly on PID control, every step—from deriving the transfer function (or importing real-world data) to generating Bode, step-response, and error plots—must be documented so the workflow is reproducible. Control System Toolbox and Simulink are expected throughout; you are free to introduce additional MATLAB toolboxes if they shorten development or sharpen visualisation. Deliverables: • Well-commented .m files and/or Simulink model implementing the PID controller • A brief report (PDF or Word) outlining model assumptions, tuning method, key plots, and interpretat...
I’m looking for an online tutor based in India who can guide me through intermediate-level administration of both Linux and Windows Server environments. On the Linux side I want practical, session-based coaching in system administration, security and firewall management, and shell scripting. For Windows Server, the focus should be Active Directory management, server configuration and deployment, plus security and patch management. Each topic needs to be demonstrated live, with time for me to replicate the steps on my own lab machines during or immediately after the call. We can meet on Zoom or Google Meet for 2–3 hours a week, preferably evenings or weekends. Deliverables • A structured lesson plan that maps out the sequence of sessions &bul...
...Citizen Engagement Engine enables districts to reach over 10,000 citizens in minutes — through human-like AI conversations across voice and messaging channels. Assisting with scheme registrations, clarifying benefits, and conducting large-scale surveys. Administrators receive real-time, decision-ready action recommendations. Our Grievance Management System works with handwritten complaints and converts them into a structured, trackable system for better oversight. GLAD’s GovGPT deploys guardrailed AI agents trained for niche government services. In District Development Authorities, GovGPT helps architects understand map approval processes within minutes. These GPTs are deployed across websites, WhatsApp, and voice — ensuring accurate, policy-aligned r...
The developer should build a cross-platform AI-powered IT Help Desk agent and management system that supports Windows, Linux, and macOS. The system must include a backend API (preferably in Python FastAPI or Node.js) to handle ticket management, device registration, and command distribution, along with a secure database (PostgreSQL) and an optional vector database for AI knowledge retrieval. The agent itself should be written in a compiled language like Go for cross-platform deployment, capable of registering devices, reporting system info and heartbeat, detecting missing patches, restarting services, and executing safe commands remotely. The AI component should analyze incoming IT tickets, automatically suggest fixes, and optionally execute auto-remediation commands w...
I currently manage a website built for display management. It runs on a Linux server with an SQL database. Over time, the system has slowed down and is struggling to handle the increasing volume of data efficiently. The goal is to redesign the website using modern technologies and update the overall architecture to improve performance and scalability. All page designs have already been completed in Figma. The platform synchronizes its main database with local databases on connected desktop workstations, and the new version must remain fully compatible with the existing desktop software to ensure seamless synchronization. There are three user roles: Super Admin, Admin, and User, each with specific permissions to manage or view different levels of content. In addition, the UI need...
This project will create an end-to-end, AI-powered email delivery system for a U.S. client. All work must be carried out on-site or remotely from New York State; residency is a strict requirement because of data-handling policies. Scope of work The core task is to design, train, and deploy a regression-based machine-learning model that predicts optimal email-send parameters from rich transactional data. I will supply secure access to the historical transaction logs; you will architect the data pipeline, engineer the relevant features, and iterate on model performance until it is production-ready. Once validated, the model should be wrapped in an API and integrated into our existing email infrastructure so it can trigger personalized sends automatically. Key responsibilities &b...
My priority is to bring in professionals with solid technical skills who can jump onto projects at short notice and deliver real, measurable results. Whether your background is in programming, data analysis, system administration, or a related discipline, if you thrive on solving problems with code and technology I’d like to hear what you can do. Here’s what will help me decide quickly: • A concise overview of your core technical strengths and the tools you rely on most (think Git, cloud platforms, scripting languages, databases, or the frameworks you use daily). • One or two brief examples of past work that prove you can move from requirement to working solution without hand-holding. • Your current availability (hours per week and time-zone ov...
I'm seeking an experienced audio technician to troubleshoot and configure our Presonus StudioLive 64S and NSB32.16 sound system. We are facing connection issues and need help to get everything working smoothly. Key Tasks: - Troubleshoot existing setup to resolve connection issues. - Configure sound board for optimal performance. - Provide a training session on system operation. Ideal Skills and Experience: - Proficiency with Presonus StudioLive and NSB32.16 - Strong troubleshooting skills - Experience in audio system setup and training Please include relevant experience in your application.
I am looking for an experienced Q-Sys programmer to set up an audio system for a recreation facility. Individual must be located in the Lower Mainland. Requirements: - Integrate microphones, aux inputs, amplifiers and speakers - Integrate Bluetooth into the system - Implement automatic gain control - Capable of building GUI for 2 control surfaces - "Page All" for entire facility and individual paging for 3 different zones Ideal Skills: - Expertise in Q-Sys programming - Experience with audio setups - Knowledge of audio processing features - Experience in building simple GUI for user control
My new online toy store is almost ready to open its virtual doors and I now need a complete logo system that feels classic and traditional—think of the warmth of an old-fashioned toyshop rather than a sleek tech brand. The central visual idea I have in mind is wooden blocks arranged in a way that can work both as a primary wordmark and as a stand-alone icon. For the color palette, think PIXAR. These tones need to remain consistent across every variation you create so the branding feels gentle and welcoming on screen, packaging and social media alike. Here’s what I expect to receive: • A primary logo, secondary lock-up, favicon/social avatar and a simple monogram or emblem that all flow from the same design language • Source files in AI and SVG, plus web-r...
...who can keep our day-to-day administration running smoothly while also steering the small-to-midsize projects that cross my desk. Your core focus will be twofold: reliable administratieve ondersteuning and accurate project coördinatie. Because solid decisions start with solid data, I also need you to turn raw numbers into clear analyses and concise reports. You will spend most of your screen time in Excel—building trackers, cleaning data, and visualising results—but you should feel at home across the wider Microsoft Office suite for correspondence and document control. If you already use pivot tables, lookups, and conditional formatting without thinking twice, you will hit the ground running. Key deliverables • A well-organised digital filing and tracking ...
I need a well-argued, properly referenced research paper that examines current issues in Business Administration and Organizational Leadership. The final manuscript should reflect solid academic rigor—clear problem statement, critical literature review, sound methodology discussion, and evidence-backed conclusions—formatted to standard journal expectations (APA or similar is fine as long as consistency is maintained). To help me judge fit, please share links or files of past academic work you have produced at comparable depth; seeing how you structure arguments and handle citations matters more to me than a lengthy proposal. Deliverables • Full paper in editable Word and clean PDF • Complete 3 scholarly reference list formatted consistently I will revie...
Project Brief – Delivery & Courier Management System Company: Spartan Tracker Industry: Vehicle Tracking & Fleet Management Project Overview Spartan Tracker is expanding its services and intends to develop a complete Delivery & Courier Management System to offer delivery and on-demand services. We are looking for a development team to build a scalable, secure, and modern platform that includes web and mobile applications. The system must support real-time operations, financial management, and seamless interaction between administrators, couriers, and customers. Core System Requirements 1. Admin Dashboard (Web-Based) The admin panel must allow full operational control, including: User management (customers & couriers) Courier approv...
After successfully finalizing our first version of our automotive braking system board, we would now like to improve the design to make it modular, safe, reliable, and production ready. Requirements: Fixes: - Analyze and fix the power issue on the board. - Make minor labeling corrections and adjust components placement - Add a few more components based on provided requirements Create two board versions: 1. Improved board with all findings fixed. 2. Production board with a professional enclosure. - Reduce board cost by eliminating unnecessary components. - Consider EMC tests. - Select the best interface connector. - Enable board variants. Other requirements: - The chosen candidate must be open to schedule video or voice calls whenever necessary. - The chosen candidate is required...
I want to launch a fully-featured, cloud-hosted lottery platform built on a hardened Node.js backend with a reliable database layer. New players will sign up with a classic email-and-password flow, then complete KYC before they can fund their wallet or join a draw. The exact KYC data points can be finalised together, but the process must be seamless and compliant. Core flow • A user tops up an internal wallet via PayPal (gaming category enabled), buys entries, and watches their balance update in real time. • On draw day a server-side, provably-fair randomiser selects winners; every draw, ticket purchase, and payout is written to an immutable audit log. • From my side I need an admin dashboard that shows live player stats, transaction history, and lets me trigger or sc...
Core Objective: Maintain real-time marketplace monitoring and ensure stable 24/7 operation with reliable VPN rotation. Finding 2–3 profitable cards per week is considered success. Current Status (95% Complete): Deployed on DigitalOcean with live Vinted & Wallapop scraping, MySQL database, Bootstrap dashboard, email alerts, CSV/Excel export, automated deployment scripts, and full documentation. Remaining Work: - Improve VPN stability & Surfshark rotation (fix SSH drops, add failover) - Increase scraping success rate to 70–85% - Enhance HTML parsing & structured data extraction (~90% accuracy target) - Strengthen arbitrage detection via eBay price comparison - Final end-to-end production testing for 24/7 reliability Goal: Deliver a fully hardened, production-...
I need a network setup for our condominium management company. We have an administration team and a manager that need to be connected for efficient file sharing. Requirements: - Facilitate file sharing, primarily software and applications - Integrate with our preferred email communication system Ideal Skills and Experience: - Experience in setting up secure and efficient networks for small to medium-sized teams - Familiarity with file-sharing protocols and software - Strong understanding of integrating networks with email systems Please provide a portfolio of similar work and an estimated timeline.
...seeking an expert in AI automation and intelligent systems to design and implement a robust multi-agent workflow system that streamlines business operations, enhances decision-making, and automates repetitive processes. The system should include a Retrieval-Augmented Generation (RAG) agent for internal knowledge management. Key deliverables include: 1. Multi-Agent Workflow Setup: Agents for data processing, reporting, notifications, and task management. 2. RAG Agent Prototype: Integrate AI-powered retrieval to answer queries and support decision-making. 3. Integration with existing tools (CRM, spreadsheets, email, or project management apps). 4. Comprehensive documentation on system architecture, agent behavior, and user guide. 5. Testing to ensure agents perform ta...
...and sends it to the Mac. * The "Auto-Green" Moment: The billing screen on the Mac/Tablet turns green automatically the second the payment hits. No manual checking required. 2. The "No-Scam" Audit System (The Security) This solves the problem of managers stealing cash or faking entries. * Shift Tracking: Logs the exact time a manager logs in and out. It calculates "Active Hours" so they can't lie about how long they worked. * Manager ID Stamps: Every bill (Cash or UPI) is permanently tagged with the manager's name. * Audit Trail: If a manager tries to change their name or delete an entry, the system saves a "Red Flag" log that they cannot delete. 3. The "Sponsored" Billing Format (The Revenue) This is your &quo...
KPI tracking and dashboard on excel. We are looking for a skilled Excel data analyst to design and develop a comprehensive KPI tracking system and interactive dashboard using Microsoft Excel. The project involves working with business performance data such as sales figures, operational metrics, financial performance, or team productivity reports. The goal is to transform raw data into a structured, automated, and visually clear KPI dashboard for performance monitoring and decision-making. The selected freelancer will be responsible for organizing and cleaning the provided data, defining and calculating relevant KPIs, and building a dynamic Excel dashboard using advanced formulas, pivot tables, charts, slicers, and data validation tools. The dashboard should allow real-time tracki...
I have sketched out an “all-in-one” workbook for my new health and fitness business, but I need an Excel pro to turn the rough concept into a clean, functional tool while we work together live. The core pieces are straightforward—client data management plus workout and nutrition tracking—so solid use of formulas, lookups, data validation and clear sheet design should cover everything. No macros or heavy VBA are necessary; good, well-labeled formulas will do the job. Here’s how I picture the session: we jump on a shared screen for a few focused hours, build each section in real time, refine any calculations, add conditional formatting where it makes sense, and organise the navigation so I can expand it later on my own. I’m already very comfortable using ...
I am seeking a qualified freelance scientific writer to prepare two articles titled: ‘Microfinance and community-based financial models for economic inclusion’ and ‘Anti-corruption mechanisms in improving public administration efficiency.’ Each article must follow the IMRaD structure and be 21,600–27,000 symbols long (excluding references). The deadline is 10 days. Additional formatting and content guidelines will be provided to the selected freelancer.
...Field Application Specialists ________________________________________ 4. Solution Overview The solution will be delivered as a hybrid mobile application (Android & iOS) acting as a digital training academy, not a document repository. Core Characteristics • Self-paced learning • Level-wise progression • Interactive content • Knowledge assessments • AI-assisted learning support • Centralized administration & reporting ________________________________________ 5. Training Content Structure & Methodology 5.1 Content Organization • Existing PPTs will be: o Divided into levels → topics → sub-topics o Converted into short, focused micro-learning units • Each unit will include: o Concept explanation o Visual / audio support o...
...SQL) data store. What I need from you is end-to-end ownership of the stack: solution architecture, clean code, robust testing, and cloud deployment. The product must open the door for future add-ons such as a real-time analytics dashboard, but for this first milestone the focus is on: • Lead scoring system that assigns quality grades the moment data arrives • Automated lead routing that pushes hot prospects to the correct broker or CRM queue without manual touch Please design the system to scale smoothly, build a CI/CD pipeline, document every decision, and leave me with a repo that another senior developer could pick up instantly. If you’ve previously delivered production React/Node platforms with strict uptime SLAs, I’d love to see the evid...
...recruitment & deployment system. This isn’t just a small bot tweak. I want to build something clean, scalable, and professional from the start. If you enjoy building structured systems and automation that actually gets used daily ; this project is for you. What We’re Building Inside our Discord server, freelancers (Editors & Writers) will: Open their own ticket Select their role via dropdown Automatically receive trial instructions Submit their trial via modal Be reviewed by staff using buttons Get deployed to the team with one click The goal: Zero manual chaos. Full automation. Scalable structure. Core Features Required Smart Ticket System Dropdown-based role selection Auto channel creation Permission management Trial role assignment Trial Sub...
I'm looking to create an autofish system that reacts to water splash sounds. Requirements: - The system should respond only to water splash sounds. - Input method for sounds should be pre-recorded. - Integration with provided YouTube link audio is necessary (convert to required format if needed). - Also want it to look in chat for the words "Turbo Fishing has procced" if it reads that it'll automatically (or the sound of a firework exploding) It'll automatically click the right click at 20cps for 7 seconds - Some sort of easy GUI Ideal Skills & Experience: - Experience with sound recognition and automation systems. - Proficiency in audio processing and conversion. - Knowledge in fishing technology or related automation. Please include any rele...
I need a mobile-first FORESAFE QR web system built on foresafe.in. The system will utilize imported CSV tag codes (e.g., FS-0001) to generate QR codes. Each QR code will link to a page () featuring three buttons: - WhatsApp Owner - Wrong Parking - Emergency Owner registration requires entering a tag code and WhatsApp number. Requirements: - Simple and minimalistic UI for the registration page - Landing page must include: - Brief introduction and purpose - Step-by-step guide on using the system - Contact information and support - QR code import functionality should be accessed via a hidden URL, available only to admins Ideal Skills and Experience: - Proficiency in web development - Experience with mobile-first design - Familiarity with QR code generation and
...and tech startups globally. We manage multiple legal entities across jurisdictions, including Dutch BVs and potential US structures. WHAT WE NEED We need someone who can handle the full financial picture across our ventures. Here's what that looks like in practice: Bookkeeping & Administration • Day-to-day bookkeeping for multiple entities (Dutch BV, potential US LLC/Corp) • Accounts payable/receivable and bank reconciliations • Cash flow monitoring, invoice management, and expense tracking • Payroll administration support Tax Compliance • Dutch tax filings: BTW/VAT, vennootschapsbelasting, IB • EU VAT compliance for cross-border SaaS (including OSS) • US tax obligations where applicable (sales tax, federal/state filings) &bul...
Trusted shop API integration on existing Trustpilot review management system.
Description I am developing a modular 1:64 racing track system optimized for FDM 3D printing. The full technical specification is already defined (dimensions, tolerances, snap-fit inserts, connectors, curve radius, engraving rules). I need a professional mechanical CAD designer to convert this into a fully parametric, production-ready model. This is not a concept job. Geometry and measurements are already fixed. Scope of Work Design the following: • Straight segments (90mm, 144mm, 156mm) • R2 curve segment (30°) • Modular curb insert (snap-fit) • Flat black filler insert (same geometry as curb) • White line insert • Mechanical connector system • Engraved underside identification All based strictly on provided PDF specification. R...
I built as a quick proof-of-concept with a low-code tool. The core of the site is a content-based recommendation engine that relies on each movie’s metadata (mood tags, genre, tempo, colour palette, etc.) to suggest the next title. Everything works for demo purposes, but I now need a rock-solid, production-ready version. Here’s what I’m after: the existing front-end and logic need to be refactored or rebuilt so the platform can handle real traffic, persistent data, and a CI/CD pipeline. I’m open to the tech stack you propose as long as it keeps the recommendation engine fast and explainable. You’ll optimise queries, set up a proper database, containerise the app (Docker or similar), and deploy it to a cloud provider with monitoring and automatic scalin...
Are you also a Linux user? Here's an article to help you protect your systems against uninvited intruders.
This document provide the basic undertandings on the Perl Scripting.