
Đang triển khai
Đã đăng vào
Thanh toán khi bàn giao
I need an experienced backend or network-security specialist to pinpoint exactly where the LBank exchange API used by one of our listed trading pairs is routing its calls. Although I have full access to the official API documentation, live trades are being executed outside the credentials of our normal account, so I want to uncover the intermediate endpoint, proxy, or service that is actually processing those orders. Here’s the current situation: • The asset is already listed on LBank and trades continuously. • Our application keys show no abnormal activity, yet fills appear on the order book. • A specific currency pair can serve as an anchor for packet or log correlation. Deliverables I’m expecting: 1. A clear map of the connection route from our application to the final execution endpoint (IPs, domains, or third-party services involved). 2. Evidence—packet captures, log traces, or signed API responses—demonstrating how the trades are being relayed. 3. A brief mitigation or monitoring recommendation so we can prevent or at least track any future off-account executions. Please indicate which investigative tools or methods you propose to use (e.g., Wireshark, tcpdump, reverse proxy logging, custom scripts against the /openapi or /v2 endpoints) and an estimated timeframe for the initial findings.
Mã dự án: 40354172
47 đề xuất
Dự án từ xa
Hoạt động 12 ngày trước
Thiết lập ngân sách và thời gian
Nhận thanh toán cho công việc
Phác thảo đề xuất của bạn
Miễn phí đăng ký và cháo giá cho công việc

Hi, This isn’t just an API check—the real challenge is tracing hidden execution paths and identifying whether a proxy, relay service, or compromised flow is injecting trades outside your authenticated context. I’ve worked on exchange integrations and backend security audits, and I understand how tricky it is to debug “ghost executions” without clear logs or visible credentials. My approach: • Trace network flow using tcpdump/Wireshark to capture outbound API calls • Correlate requests with LBank endpoints (/openapi, /v2) and inspect headers/signatures • Analyze DNS + IP routing to detect proxy layers or third-party relays • Implement reverse proxy logging (if applicable) to capture full request lifecycle • Cross-check order signatures vs your API keys to detect spoofed or external injections • Build a small script to replay/verify signed requests against LBank responses You’ll get: • Full connection map (IPs, domains, intermediate services) • Packet/log evidence proving how trades are executed • Root cause analysis (proxy, leaked key, backend issue, etc.) • Clear mitigation plan (monitoring + security hardening) Portfolio: [login to view URL] GitHub: [login to view URL] I can start immediately and provide initial findings within 24–48 hours. Let’s track this down properly.
€500 EUR trong 7 ngày
0,6
0,6
47 freelancer chào giá trung bình €504 EUR cho công việc này

Hi, I’m available to start right away. I have strong experience in backend debugging, network security, API tracing, packet analysis, reverse proxy inspection, and investigating real production flows across trading and exchange-integrated systems. I’ve worked hands-on with cases like this where the goal is to trace exactly how API calls are being relayed, and I can methodically map the real execution path using logs, traffic inspection, and endpoint correlation so you have clear evidence of where orders are actually being processed and how to monitor or stop it going forward. You can expect clear communication, fast turnaround, and a high-quality result that fits seamlessly into your existing workflow. Best regards, Juan
€500 EUR trong 3 ngày
5,8
5,8

I have extensive experience in this field and am excited about Crypto Exchange API Endpoint Tracing.
€1.925 EUR trong 14 ngày
5,4
5,4

hi, i have reviewed the details of your project. this looks like a routing or proxy layer issue, and i can help trace it properly. i will analyse api calls using tools like tcpdump and wireshark, correlate requests with your trading pair, and inspect headers, signatures, and endpoints to map the full path from your app to execution. i can also set up logging or a reverse proxy to capture real request flows and identify any hidden service involved. let's have a detailed discussion, as it will help me give you a complete plan, including a timeline and estimated budget. i will share my portfolio in the chat. can we schedule a quick meeting to go over this? mughiraa
€500 EUR trong 7 ngày
4,7
4,7

⭐⭐⭐⭐⭐ Identify API Routing Issues for LBank Exchange Trading Pairs ❇️ Hi My Friend, I hope you are doing well. I've reviewed your project needs and see you are looking for a backend or network-security specialist. You don’t need to look any further; Zohaib is here to help you! My team has completed over 50 similar projects focusing on API security and routing issues. I will analyze the API connections and uncover the exact endpoint processing your trades. ➡️ Why Me? I can easily handle your project as I have over 5 years of experience in backend development and network security, specializing in API analysis, endpoint tracing, and packet capturing. I also have a strong grip on investigative tools like Wireshark and tcpdump, ensuring a thorough approach to your needs. ➡️ Let's have a quick chat to discuss your project in detail and let me show you examples of my previous work. I look forward to discussing this with you in our chat. ➡️ Skills & Experience: ✅ API Security ✅ Network Analysis ✅ Endpoint Mapping ✅ Packet Capturing ✅ Log Tracing ✅ Troubleshooting ✅ Scripting ✅ Wireshark ✅ Tcpdump ✅ Proxy Configuration ✅ Data Analysis ✅ Monitoring Solutions Waiting for your response! Best Regards, Zohaib
€350 EUR trong 2 ngày
5,7
5,7

YES========>>>>>I can investigate and map the full API call path using tools like Wireshark, tcpdump, and proxy logging to identify any intermediate endpoints or unauthorized routing. I’ll provide clear evidence (logs/packet traces) along with actionable recommendations to secure and monitor future activity.========
€499 EUR trong 5 ngày
4,5
4,5

Hello, I’ve carefully reviewed your project Crypto Exchange API Endpoint Tracing and it’s something I can confidently handle. I’m a professional developer with strong experience in Network Administration, Network Engineering, API Testing, Network Monitoring, Network Security, Backend Development, API and API Development, delivering reliable and high-quality solutions with clean code and efficient performance. I ensure every project is handled with attention to detail and a results-driven approach to meet your expectations. If you’ve shared any files or details, I’ll review them and provide quick feedback. Let’s connect and get started right away you can also check my profile reviews for similar work. Regards, Mahad Sheikh
€250 EUR trong 4 ngày
3,8
3,8

Hey , I just went through the project description, and I see you are looking for someone experienced in API, Network Security, API Development, Network Monitoring, Backend Development, Network Administration, API Testing and Network Engineering. It instantly reminded me of a client who faced similar challenges, and I knew I had a tailor-made solution for it. Please review my profile to confirm that I have great experience working with these tech stacks. While I have few questions: • Is there anything else you’d like to add to the project details? • What’s the top hurdle you’re facing with this project? • What is the timeline to get this done? Why Choose Me? 250+ Projects. 5 Years. Zero Misses. My reputation is built on a single metric: Flawless Execution. While others promise quality, my last 100+ consecutive 5-star reviews prove it. I don’t just finish the job; I set the standard. Timings: 9am - 9pm Eastern Time (I work as a full time freelancer) The portfolio here is just the tip of the iceberg. To respect client confidentiality, my recent heavy-hitters aren't public, but I can share them 1-on-1. Click the 'CHAT' button, and I’ll send over the relevant samples immediately for your review. Regards, Abdul Haseeb Siddiqui.
€250 EUR trong 5 ngày
3,6
3,6

Hey, I am ready when you are.✅ I’ve worked on something very similar. The tricky part is usually tracing API endpoints in live trading scenarios. I recently worked on a project involving analyzing network traffic patterns to identify unauthorized access points. Although I haven't specifically traced an LBank exchange API, I have experience with similar exchanges like Binance and Kraken. I would approach this by using tools like Wireshark and custom scripts against relevant endpoints to map out the connection route and gather evidence. Let's chat! -Oleksandr
€510 EUR trong 7 ngày
3,5
3,5

Hey, your project, Crypto Exchange API Endpoint Tracing looks like a great fit for my skills. I've worked on similar Network Administration projects and can deliver solid results. Let me know if you'd like to chat about the approach.
€250 EUR trong 7 ngày
3,6
3,6

⭐Hi, I’m ready to assist you right away!⭐ I believe I’d be a great fit for your project since my expertise lies in API tracing and network security. Having experienced in backend development and network engineering, I can precisely map out the connection route from your application to the final execution endpoint. By leveraging tools like Wireshark and reverse proxy logging, I can uncover the intermediate endpoint processing the orders. This project piques my interest as it aligns perfectly with my skills in API development, network monitoring, and backend development. I am confident in providing you with clear evidence through packet captures and log traces to reveal how the trades are being relayed. The deliverables you expect, including the connection map, evidence of relayed trades, and mitigation recommendations, will be delivered promptly. Let's collaborate to safeguard your trading pairs and track any unauthorized executions.
€250 EUR trong 5 ngày
3,2
3,2

Hi! I can help you with tracing the API call routing and figuring out where those off-account trades are originating. This is right in my wheelhouse as a network engineer. I'd start with packet captures using Wireshark and tcpdump on your application server to map the full connection path, then correlate against that specific currency pair to isolate the suspicious traffic. From there I can trace any intermediate proxies or third-party services sitting between your app and LBank's execution endpoint. I'm Edward, 10+ years in network engineering and security. I should have initial findings within a few days of getting access. Let me know if you want to discuss the approach.
€930 EUR trong 7 ngày
2,3
2,3

Hello, With a strong background in backend engineering and network security, I’ve worked extensively with API tracing, packet inspection, and endpoint correlation across complex infrastructures. I’ve handled similar cases where trades or API calls were routed through unexpected proxies or shadow services, so your situation with LBank’s unexplained fills is something I can dig into precisely. I’ll trace the exact route of your exchange calls, map all intermediate endpoints, and collect clear evidence using tooling like packet captures, proxy logs, and custom request tracing. From there, I’ll outline simple mitigation steps so you can monitor or block any suspicious off-account execution paths. Best regards, Sami
€500 EUR trong 4 ngày
2,4
2,4

Hi, This is Jagrati. I checked your project description and understand you’re looking for a backend/network-security specialist to investigate how LBank API requests are being routed and to identify any intermediate endpoints, proxies, or unexpected paths that may be involved in order execution for a specific trading pair. My approach would be to perform a controlled, observability-driven analysis rather than attempting to “trace” the exchange internally (since that infrastructure is not publicly exposable). I would focus on capturing and correlating all outbound requests from your application environment and validating them against documented API behavior. I’d be happy to go through the details and suggest the best technical approach. I have a few questions to get a better understanding: Q1 – Is your application deployed on a cloud provider, VPS, or local infrastructure? Q2 – Are there multiple environments (dev/staging/prod) that might be sharing API keys or configurations? Q3 – Do you have any existing proxy, gateway, or middleware layer between your app and the LBank API? Looking forward to hearing from you. Best regards, JP
€500 EUR trong 7 ngày
1,8
1,8

Hi there, I've read your LBank API routing investigation brief and I can help. I'm a network-security specialist with experience tracing API call routing, performing packet captures, and identifying hidden proxies or intermediate endpoints in exchange integrations. I'll use Wireshark/tcpdump to capture live traffic from your application server, filter for outbound connections to LBank-related IPs, and correlate with order book fills. I'll also run custom scripts against LBank's /openapi or /v2 endpoints to compare expected vs. actual behavior. Deliverables include a connection route map (IPs, domains, third-party services), evidence (packet captures or log traces), and mitigation/monitoring recommendations.
€700 EUR trong 10 ngày
1,7
1,7

I’m a senior backend engineer with 9+ years of experience in API systems, network tracing, and security analysis. I can investigate and map the exact routing path of your LBank API calls, identifying any intermediate proxies, services, or unauthorized execution paths. My approach includes packet capture (tcpdump/Wireshark), server-side logging, reverse proxy tracing, and API request correlation against your trading pair. I’ll provide clear evidence (logs, traces, endpoints) and deliver a detailed route map, along with actionable recommendations to monitor or prevent off-account executions. I’ve handled similar debugging and security investigations in production systems and can deliver initial findings quickly and reliably.
€500 EUR trong 7 ngày
1,5
1,5

Hey there, I will perform controlled endpoint tracing using packet capture tools such as tcpdump and Wireshark at the server level, enable reverse proxy access logging if applicable, and correlate timestamps against the specific trading pair you mentioned. I will inspect outbound DNS resolution, TLS handshake metadata, and destination IP mappings to determine whether calls are going directly to official LBank endpoints or through an intermediate proxy or third party relay. Where direct packet inspection is limited, I can deploy controlled test calls with signed payload markers to trace response signatures and confirm execution paths. The outcome will be a clear connection map showing IPs, domains, and routing flow, supported by capture evidence and log correlation. I will also provide mitigation steps such as outbound firewall pinning, API key scope tightening, and real time endpoint monitoring to prevent unnoticed relays in the future. Example trace logic concept: if(destination_ip not in approved_whitelist) { flag_and_log(); } Are your trades originating from a dedicated server, cloud VM, or containerized environment? Inbox me ASAP. Warm regards, Umer Kayani
€250 EUR trong 7 ngày
1,2
1,2

Howdy, Are these trades originating from your infrastructure or somewhere else entirely? I’ve done API tracing and network debugging to find hidden endpoints and proxy layers and also I’ve worked with exchange APIs and tracked unexpected order flows before. I’ll provide clear evidence and suggest how to monitor or block this going forward. Do you have server access and logs available? Thanks
€300 EUR trong 2 ngày
1,4
1,4

Hello, As a result of a detailed review of your project requirements, I fully understand the scope and expectations. I have experience investigating API traffic paths, backend integrations, and security anomalies in production environments, and I’m available to start your project right now. I bring deep expertise in Backend Development, API Testing, Network Security, Network Monitoring, Network Engineering, and Network Administration with over 10 years of experience, and I’m here to help you trace the real execution route behind the LBank trading flow and identify any intermediate endpoint or relay involved. One of the key challenges in projects like this is correlating application behavior, network traffic, and exchange responses without disrupting live trading. I can approach this through controlled traffic tracing, reverse proxy/log analysis, request correlation against the target pair, and evidence-based validation to map the path from your application to the final execution service, then document findings and monitoring recommendations clearly. I have a couple of quick questions. • Do you have access to the application server or gateway where outbound API traffic can be logged or captured? • Is the suspicious activity isolated to one service and one trading pair, or does it affect multiple integrations? I would be glad to discuss further details and am ready to start immediately. Looking forward to hearing from you. Best regards, Carlos.
€250 EUR trong 7 ngày
1,2
1,2

Hi, that’s great to hear! Your project closely aligns with one I recently worked. In that project, I built a full network-trace pipeline for a crypto trading platform using Wireshark, tcpdump, and custom proxy logging with automated signature verification, helping the team identify hidden relay endpoints and unauthorized execution paths. For your LBank pair, I can apply similar endpoint tracing, controlled packet capture, and API response correlation to uncover where those off-account trades are being routed. I’d be glad to connect and share my experience in more detail over chat. Thank you. Best regards, Lazar
€300 EUR trong 2 ngày
0,0
0,0

Hello, I understand the urgency of identifying the source of the unexpected trades on your LBank exchange API, and I’m here to help you resolve this issue effectively. My approach will involve using tools such as Wireshark and tcpdump to capture network traffic, along with custom scripts to analyze the API endpoints involved. Here is what I will deliver: - A clear map of the connection route from your application to the final execution endpoint (IPs, domains, or third-party services involved). - Evidence—packet captures, log traces, or signed API responses—demonstrating how the trades are being relayed. - A brief mitigation or monitoring recommendation to help prevent or track future off-account executions. I can confidently complete this within your budget and timeline, and I will keep you updated throughout the process. Could you clarify if there are any specific timeframes or patterns you've noticed related to the unexpected trades? Best regards
€500 EUR trong 7 ngày
0,0
0,0

Detmold, Germany
Phương thức thanh toán đã xác thực
Thành viên từ thg 8 15, 2018
€750-1500 EUR
€250-750 EUR
€250-750 EUR
₹12500-37500 INR
$10-30 AUD/ giờ
₹75000-150000 INR
$10-30 USD
€6-12 EUR/ giờ
₹12500-37500 INR
₹600-1500 INR
$10-30 USD
$250-750 USD
$10-30 USD
$250-750 USD
$15-25 USD/ giờ
₹250000-500000 INR
$15-25 USD/ giờ
$750-1500 USD
$30-250 USD
$250-750 USD
£250-750 GBP
$60-70 USD/ giờ
$250-750 USD