Tcp Ip Jobs

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Hourly - Expert ($$$) - Est. Time: More than 6 months, 10-30 hrs/week - Posted
* More detailed information is attached to this job, please read first before contact. We are looking for a Principle or Architect level OS X developer. You will design and develop the first version of our revolutionary desktop products for the Mac. A well rounded technical background is needed as well as deep experience with OS X. What you'll need: • 5+ years of professional software development experience in a product development environment. More experience is better. • 3 recent years of Objective-C. • Demonstrated ability to write code. • Experience on a small team building commercial software products. • Cross platform development with Linux and Windows. • Experience with networking protocols such as TCP and HTTP. What else we’d like to see: • Experience with Mac Kernel and Driver Layer APIs • Security expertise. Experience building secure code, penetration testing and building security products. • Experience building Enterprise software products. • Have worked in an Agile development environment with Scrum.
Skills: TCP/IP Apple Xcode C++ Mac OS App Development
Fixed-Price - Intermediate ($$) - Est. Budget: $750 - Posted
Job Descriptions of VAS Engineer: We have a content delivery system that integrates our clients in Africa to all Mobile Network Operators (MNO) to send contents via SMS, STK, USSD, IVR/OBD and WAP gateways. The Content delivery platform is highly scalable and extendable for SMS, STK, USSD, IVR/OBD and WAP services delivery. We need a full stack developer with Linux system administration experience in Telecommunication fields. Required skill sets: - Demonstrable experience developing with the LAMP stack (Linux, Apache, MySQL and PHP). Experience with other stacks (e.g. LEMP) a plus. - Linux – must be comfortable with the Linux terminal and be able to perform basic to advanced tasks from the terminal. Access to the VAS server is via the terminal only. - Linux - Networking (IPSec Tunnel, routing & troubleshooting, TCPDUMP , etc) - Linux - SysAdmin (ensure service OAM - support role, can set up cron, logrotate, backups, etc) - Web Server Technology – can set up, configure and troubleshoot an Apache web server. Working knowledge of Beanstalkd, Redis and Nginx is a plus. - SQL - Strong knowledge of SQL. MySQL is currently in use; experience with this or ability to pick up quickly is essential. - PHP Programming – Our Content Delivery platform is built with Yii2 Framework; experience with Yii2 is required. Knowledge of other MVC frameworks is a big plus, for future deployments. - SMPP: Working knowledge of SMPP is a must. Experience with Kannel integration & customization is critical. - Java Programming: can read/write Java code and develop with the Java Spring Framework. Part of our SMPP integrations is implemented in Java. Experience with implementing SMPP in Java is a definite plus. - Source Code Management: Experience with git in a team environment. Our source code repository is managed with git. - Containerization: We use deploy our integrations on Docker servers. Experience with Docker and Docker-compose on Linux is necessary. Knowledge of other container technologies is a plus. - Experience with Web API integration (in PHP and Java), and related technologies (Curl, SOAP, XML, JSON etc) - Experience with configuration and deployment of different VAS solutions - Mobile Applications Development experience is a distinct advantage. - Able to coordinate integration activities between the VAS solutions with the core network, the LAN, the charging systems and the third party content providers. - Strong technical expertise on telecommunications technologies such as SMSC, MMSC, WAP,IVR/OBD and STK - Working experience on VAS Platforms, and service requirement definitions. - Strong knowledge of both Telco Based mobile platforms & services and also IT based VAS services. - Good knowledge of GSM architecture and entities. - Strong working knowledge of SMS, OBD, IVR, USSD and STK mode of subscription and content delivery Job Type: Remote or local support Additional qualities desired: - Ideal candidate must be an independent thinker - Ability and willingness to learn new technologies very quickly when the need arises. - High level of availability
Skills: TCP/IP Apache CXF Docker Git
Hourly - Entry Level ($) - Est. Time: Less than 1 week, Less than 10 hrs/week - Posted
The TCP server will receive a huge amount of data through vpn, that data needs to be checked in a checksum, you will also need to implement a buffer. I already implemented this in Ruby and we want to a benchmark using golang. Knowledge of TCP and buffers is required.
Skills: TCP/IP Go Golang
Hourly - Expert ($$$) - Est. Time: Less than 1 month, Less than 10 hrs/week - Posted
Here's the project in broad strokes: We need to be able to open a data channel with no information sent over WebSocker or HTTP(S) To that end, we devised the following theoretical "algorithm": Have a static JS script loaded on the browser This JS script will give the browser an "offer SDP" that is static (we create it beforehand) - as if it came from an external server We then inject the SDP into a newly created peer connection and grab the Answer SDP from it We take the dynamic pieces from this Answer SDP and send it to our server component To that end, we open first another peer connection, configuring its TURN server to have as username and password the dynamic parts of the Answer SDP After sending the "credentials" to the TURN server - we close this second peer connection Now we have the SDP Answer in our TURN server So we pass that information to our WebRTC server The WebRTC server will now acts as if he sent out the initial offer SDP and received the answer SDP and connect a data channel with the browser We should be able to connect using this single IP+port of the WebRTC server multiple browsers in parallel What did we have here? A bit of JS code in the browser Some TURN server manipulation A WebRTC server, written on top (and inside) Google's WebRTC code - probably playing with DTLS while at it Is that something you can work out?
Skills: TCP/IP JavaScript WebRTC
Fixed-Price - Entry Level ($) - Est. Budget: $100 - Posted
Im looking for an experienced individual who can set up some type of secure network so we can access our eBay and Amazon accounts. We have multiple accounts and use separate cloud server (WINDOWS SERVER 2012) for each account so our accounts do not become linked. However recently we have ran into problems where in eBay and Amazon detect we are the same user despite different cloud server being used per account. So you will create a secure connection for me and advice on the best and most secure way to connect. I have a bit of difficulty explaining since my lack of networking skills, hope youget the idea.
Skills: TCP/IP Computer Networking Microsoft Windows Server
Hourly - Intermediate ($$) - Est. Time: Less than 1 week, 10-30 hrs/week - Posted
Audit a fairly stable PfSense firewall/router for a small business. Recommend any changes to increase security or stability. Determine possible cause or solution to systems inability to recover from a temporary network outage without a hard restart of PFSense machine. Design a failover configuration to a LTE Cellular device (existing) that also allows emergency external admin access to the router and network. Schedule with onsite admin to apply and test proposed changes outside of normal business hours (7AM-5PM PDT, UTC/GMT -7 hours).
Skills: TCP/IP Network Security PfSense
Fixed-Price - Expert ($$$) - Est. Budget: $600 - Posted
Looking for an experienced arduino software developer with experience in libraries, Firmwares, TCP/IP, DNS, WiFi, HTML, C++, MQTT Integration of varios Arduino Sketches together with different Hardware modules. Oportunity to work in a very exciting Startup project about a completely new product. Tasks which are to be developed in this Job. 1) Automated and manual software updates for an Arduino Mega2560 in two ways: A) An ESP8260 connected to an arduino Mega2560 with level shifter, connects to an internet server and checks for updates. If new sketch is available downloads it from server to an SD card. B) when the ESP8260 detects a new update on the SD card its programs the Arduino Mega2560 with the new sketch. This SD card with the updated sketch can have been inserted manually, or have been downloaded like described in point A) Note that Arduino Mega is 5 volt and ESP8266 is 3 Volt. Also Arduino Mega programing protocol is STK500v2 not the same as STK500v1. Files to update the Mega are in .hex format (precompiled). The Arduino Maga2560 takes care of the machine sensorse etc.. The ESP8266 will take care of communications and updates of the Arduino Mega2560 but also runs its own software, and must be able tu update itself to when new software is available. 2) A configuration webpage stored on the SD card should be launched by the ESP8266 started in both AP and STA mode at same time. Configuration webpage should be accesible on both AP and STA modes. Once the user sets parameters in configuration webpage the configuration parameters should be written to a configuration file on the SD card. Sd card should be shared by arduino Mega2560 and ESP8266 on SPI bus. The webpage has to autoupdate in case there is a new version like in point 1) A) 3)MQTT communication with Broker server to send messages to mobile phones have to be adapted, to also store logs of messages from the ESP8266´s on database on server. All the developments should be clear programing with comments describing every block of code describing what it does and why. Also detailed drawings with connections between modules should be described. Suggestions are welcome :) In a second stage Mobile app will be developed.
Skills: TCP/IP Arduino C++ Firmware Engineering
Fixed-Price - Expert ($$$) - Est. Budget: $2,500 - Posted
We are looking for experienced developers with in depth knowledge of C/C++/QT languages and advanced level of DSP pertaining to wireless and video. The project involves creation of a GUI front-end encompassing control, collection and visualisation of high-speed data sources (or sensors). The sensor API's will be provided. The basic modular blocks of the software are as below and would be based on the several libraries available for the purpose. 1. FFT 2. Digital Filtering 3. Sensor Data streaming over network 4. Visualisation of collected data 5. Basic user work flow management Only experienced developers, who have developed such applications may please reply.
Skills: TCP/IP C++ CUDA Qt