Tcp Ip Jobs

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Fixed-Price - Intermediate ($$) - Est. Budget: $4,000 - Posted
We manufacture an Ethernet product that sits between a computer and the network. We need an inexpensive device to test our product and verify that it is working properly and not impacting the connection speed or throughput for uploads and downloads. Ideally it is a single device with two network connections that connect to either side of our product and has a simple display attached that indicates the test results: - Connected (Yes/No) - Input Connection Speed (10mbps, 100mbps, 1000mbps) - Output Connection Speed (10mbps, 100mbps, 1000mbps) - Upload Speed - Download Speed - Test Result (Pass/Fail) Additional features that would be desirable are: - Simple enough to send to a customer so they can check filters in isolation from the customer’s network environment. - An advanced version that would add additional tests (eg packet loss, bit error rate, sync loss count, etc.) and then allow our technicians to add the product serial number and print a test report.
Skills: TCP/IP Arduino Raspberry Pi
Hourly - Entry Level ($) - Est. Time: More than 6 months, Less than 10 hrs/week - Posted
User must be good with networking which will include, Gateways, Routers, Switches, Access Points. User must be able to understand how to configure DNS, DHCP, Active Directory etc. You will also need to working during 10am-3pm east coast time zone within the USA.
Skills: TCP/IP Computer Networking DHCP DNS
Hourly - Intermediate ($$) - Est. Time: Less than 1 week, Less than 10 hrs/week - Posted
Your job is to extend netfiltersdk demo code with socks5 capability. nfsdk can be found at netfiltersdk.com, download the demo build 1.5.1.4, there you will find CSharp demo files. TcpRedirectorCS is made to redirect traffic from localport to remote ip:port. If you look at attched picture you will see that it can currently handle SOCKS4 and HTTP and DIRECT. Your task is to extend this c# demonstration with SOCKS5 capability, i will provide you socks5 server where you can do your tests. TcpRedirector is a demonstration of NetfilterSDK capability. It takes tcp connections and proxies by HTTP,SOCKS to target. It is designed to tunnel stuff. Socks5 has many ready implementations on internet, you dont need to reinvent the wheel, i can also provide you something. Your task is not to rewrite socks5 protocoll, you will use something ready for that. I am working with TDI Driver, you would need to install required TDI driver in order to work with Sdk. Do not bid with copy&paste
Skills: TCP/IP C# Computer Networking
Fixed-Price - Expert ($$$) - Est. Budget: $400 - Posted
for an IOT project, i am looking for someone who understand TCP socket programming. Who can set up a TCP server in the cloud ( Azure preferably ) for receiving data from the IOT device ( fleet device) and converting into HTTP/MQTT. Alternatively when the data is retreived, it could be stored and sent to external cloud using REST APIs. I am attaching the spec of the device
Skills: TCP/IP Cloud Foundry REST
Fixed-Price - Entry Level ($) - Est. Budget: $1,000 - Posted
I am looking for someone who is able to implement CurveZMQ protocol in Erlang. This work will build on the existing Erlang implementation of ZMTP protocol found here: https://github.com/chovencorp/chumak 1. It should implement the CurveZMQ 1.0 protocol. 2. Implementation will be tested against other bindings (i.e. libcurve) to make sure it functions correctly. 3. Code clarity is preferred over performance. 4. The implementation MUST support ALL socket types specified in the ZMTP 3.1 protocol. 5. The code MUST work on Windows and Linux (i.e. not use any platform-specific libraries). This is a large project, so please only consider it if you have free time. Will NOT work with an agency - only directly with developers. Relevant references: 1. CurveZMQ 1.0 protocol: http://curvezmq.org/page:read-the-docs#toc23 2. ZMTP 3.1 Protocol http://rfc.zeromq.org/spec:37
Skills: TCP/IP Cryptography Erlang
Fixed-Price - Entry Level ($) - Est. Budget: $750 - Posted
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 especially mobile VAS technologies 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) SMSC, IVR, OBD,IBD, WAP, STK,USSD protocols handson experience
Skills: TCP/IP Apache CXF Docker Git
Hourly - Entry Level ($) - Est. Time: Less than 1 week, Less than 10 hrs/week - Posted
I am a self taught program with experience in ruby, and I am trying to implement my first project on golang, and I need to deliver this with the best design and practices possible. I am searching for advice "consulting " in the design of the application as well as some core questions regarding to go. About the specifics of the project that you will be consulting: 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.
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
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