External Black-Box Penetration Test

@AZTURK1

I understand you need a rigorous external penetration test against three separate /24 ranges, with methodology and deliverables that will withstand auditor scrutiny. ✅ External black-box assessment following PTES and OWASP standards, using Nmap, Nessus, Burp Suite, and Metasploit for core testing, with SIPVicious for VoIP-specific vectors. ✅ Controlled, non-disruptive scanning and exploitation windows defined in coordination with your team to avoid impacting production traffic. ✅ Full compliance mapping of all findings to relevant controls (e.g., PCI DSS, ISO 27001), with risk-prioritized reporting and reproducible PoC details. ✅ Final deliverable includes a formal audit-ready report with executive summary, technical appendix, and a clean list of evidence for each finding. ✅ 10+ years production experience | 400+ completed projects | 320+ five-star reviews ✅ Microsoft® Certified: MCSA | MCSE | MCT & cPanel Certified (CWSA-2) To ensure accurate scoping: Are any of the SIP services hosted on a public trunk that might react differently to specific scan packets, and is there any network segmentation between the web and mail ranges I should be aware of? I can deliver this in 5-7 business days for 145 EUR and can start immediately.

@sedawy

As an experienced DevOps and Cloud Engineer specialising in security and with over 15 years in IT Infrastructure, I’m confident in my ability to conduct a thorough and auditable external black-box penetration test for your three separate /24 IPv4 ranges. My extensive background in delivering ERP deployments, CI/CD, and multi-cloud automation across various industries means I have a holistic understanding of how security fits into the bigger picture of your business, akin to securing public-facing web applications, email servers, and SIP services. In terms of methodology, my approach is meticulous and efficient. I leverage tools such as Nmap, Nessus, Burp Suite, Metasploit and SIP-specific testing utilities to perform extensive reconnaissance aimed at unearthing vulnerabilities. Controlled exploitation is carried out strictly from an external perspective to mirror real-world scenarios. Your production traffic will remain undisturbed throughout the process. My results-driven mindset guarantees that my final reporting will be detailed yet prioritized by risk. Additionally, I make it a point to map all findings to relevant compliance controls with reproducible proof-of-concept details and practical remediation guidance. Another unique aspect of my capabilities is my deep-rooted focus on aligning IT measures with business requirements - thanks to my MBA E-Business background.

@kajal1992

Hello, I can conduct a structured external black-box penetration test across all three /24 IPv4 ranges, covering public-facing web applications, email infrastructure, and SIP services, with no internal credentials required. My methodology includes: • External reconnaissance and full live-host/service enumeration • Vulnerability discovery and risk validation • Controlled exploitation where safe and authorised • Web/API testing using Burp Suite and OWASP methodologies • Infrastructure assessment using Nmap, Nessus and supporting security tools • SIP/VoIP security testing using appropriate SIP-specific utilities • Evidence collection with timestamps, screenshots, request/response data and reproducible PoCs • Risk rating using CVSS and mapping findings to applicable compliance controls The final deliverables will include an executive summary, detailed technical report, compliance/control mapping, evidence and PoCs, remediation recommendations, and a separate technical appendix suitable for auditor review. I have extensive professional experience in VAPT, penetration testing, digital forensics, threat analysis and security assessments, along with CEH, CHFI and CCNA certifications. I can also provide a formal penetration testing certification/attestation as required. For three /24 ranges, I estimate approximately 7–10 business days, depending on the number of live hosts and complexity of the exposed services, followed by final report preparation and review. Regards, Kajal

@gotucat

Hi, I reviewed the project and understand the requirement for an external black-box penetration test across three /24 IPv4 ranges supporting web, email, and SIP services, with production-safe execution and audit-ready evidence. I’ll establish scope and scheduling, perform external reconnaissance and vulnerability discovery using Nmap, Nessus, Burp Suite, Metasploit, and SIP-specific testing utilities, then conduct controlled exploitation. Linux, Internet Security, and Testing / QA practices will support reproducible proof-of-concept evidence, risk prioritisation, compliance mapping, remediation guidance, an executive summary, and a technical appendix. The engagement will include a clear testing timeline and final reporting aligned with the required Pen Test Certification. I’ll provide careful communication, clean documentation, and responsive progress updates while avoiding disruption to live services. Let’s discuss here now.

@zainulhassan1695

Hi, I’m an experienced security/QA professional with hands-on knowledge of vulnerability assessment, web/API security, network testing, and security validation. I can conduct the engagement strictly from an external black-box perspective, following the agreed scope, testing window, and rules of engagement to minimise production impact. My methodology would cover external reconnaissance and attack-surface mapping, host/service enumeration, vulnerability discovery, controlled validation/exploitation, web application testing, network-service assessment, and SIP-specific security checks. Typical tooling can include Nmap, Nessus, Burp Suite, Metasploit, and appropriate SIP testing utilities, with manual validation to reduce false positives. I’ll maintain evidence throughout the assessment and provide reproducible findings with affected assets, risk/severity, technical evidence, remediation guidance, and relevant compliance/control mappings. The final deliverables would include a management-level executive summary and a detailed technical appendix suitable for audit review. I can work within an agreed testing window and provide an estimated timeline after reviewing the three /24 ranges, scope, compliance requirements, and rules of engagement. I hold the required Penetration Testing certification and can provide verification upon request. Regards

@shivamhardia

Hi, I reviewed your requirement and understand that this is an external black-box penetration test across three /24 public IPv4 ranges, covering web applications, email infrastructure, and SIP services, with the results needing to withstand compliance and audit review. I can approach the engagement in defined phases: scope validation and rules of engagement, external reconnaissance and host discovery, Nmap-based enumeration, vulnerability assessment using tools such as Nessus, Burp Suite and appropriate SIP testing utilities, followed by controlled exploitation with Metasploit where permitted. I would maintain clear evidence for each validated finding, including affected host, severity, reproduction steps, proof of concept and remediation guidance. The final deliverable would include an executive summary, risk-prioritised technical findings, compliance/control mapping, supporting evidence and a separate technical appendix suitable for auditors. The exact timeline would depend on the number of live hosts identified, but I would typically plan 5–7 days for testing and 2–3 days for reporting after scope confirmation. Let's connect in chat to discuss and proceed. Thanks!

@mohjib092

Hi, I can conduct an external black-box penetration test across all three /24 ranges with careful production-safe testing, documented evidence, risk prioritisation, compliance mapping, and a separate executive and technical report. I can use Nmap, Nessus, Burp Suite, Metasploit and SIP-focused testing tools as appropriate, with reproducible PoCs and remediation guidance. I can provide the required Pen Test Certification and complete the assessment and reporting based on the agreed scope and testing window. Regards,

@longngoc2307

==== Hi - Truong here ==== "EXTERNAL BLACK-BOX PENETRATION TEST ACROSS THREE /24 RANGES" — you need an audit-ready assessment that finds real exposure without disrupting the web, email and SIP services. I’d keep the engagement strictly external and scope-driven: asset discovery first, service and vulnerability enumeration, controlled validation of findings, then evidence capture and remediation mapping. The report would separate executive risk from reproducible technical evidence, with testing decisions documented so an auditor can follow the methodology. Can you confirm which penetration-testing certification you require, and whether the three /24 ranges can be provided as the authorised testing scope? Looking forward to work with you.

@avileox

Hi, I can handle this as a structured external black-box penetration test rather than a basic vulnerability scan. My background is in offensive security, web application penetration testing, infrastructure assessment, automation, and vulnerability research. I have worked with external attack-surface discovery, web/API security, authentication flaws, misconfigurations, exposed services, and controlled exploitation workflows. For the three /24 IPv4 ranges, I would begin with passive and active reconnaissance, then enumerate every responsive host and exposed service before moving into vulnerability validation and controlled exploitation. My typical toolset includes Nmap, Nuclei, Nessus/OpenVAS where appropriate, Burp Suite, Metasploit, ffuf, Nikto and custom scripts, along with SIP-specific enumeration/testing utilities. Automated findings are always manually validated before they are included as confirmed vulnerabilities. For three full /24 ranges, I would estimate approximately 7–10 working days for testing and validation, followed by 2–3 working days for reporting and quality review, depending on the number of live systems and findings. I am also happy to provide a detailed Rules of Engagement and testing methodology before the assessment begins. Regarding the required penetration-testing certification, I can provide my applicable certification/credential details for your review before the contract is finalised.

@MuhammadAsad108

✔ I deliver 100% work — 99.9% is not for me. ✔ Workflow Diagram Scope & ROE ⟶⟶ External Recon ⟶⟶ Host Discovery ⟶⟶ Vulnerability Assessment ⟶⟶ Controlled Exploitation ⟶⟶ Evidence Collection ⟶⟶ Reporting & Remediation Key Highlights ✔ Black-box testing across all three /24 public IPv4 ranges. ✔ Nmap for discovery, service enumeration and exposure mapping. ✔ Nessus plus manual validation to reduce false positives. ✔ Burp Suite for web application security testing. ✔ Metasploit for controlled, authorized exploit validation. ✔ SIP-focused enumeration and security testing for VoIP services. ✔ Production-safe testing with defined scope, rate limits and ROE. ✔ Reproducible evidence, timestamps and risk-rated findings. ✔ Compliance/control mapping with actionable remediation guidance. ✔ Executive summary + detailed technical appendix for auditors. Best Regards, Asad Cybersecurity | Penetration Testing | Network Security | Compliance

@raphaelokekeze

Hi, Auditing three separate /24 IPv4 ranges containing SIP services means we must carefully throttle aggressive UDP scanning to avoid triggering rate limits or dropping live voice traffic. I will initiate passive OSINT and targeted Nmap SYN sweeps before moving to authenticated-equivalent checks against the discovered web surfaces using Burp Suite. I regularly map complex network topologies and protocol anomalies directly to compliance frameworks without missing edge-case exposures. My workflow covers iterative enumeration with Nessus, controlled exploitation via Metasploit, and SIP-specific analysis using sipsak, making sure I never leave noisy denial-of-service artifacts behind. At €159, delivery takes 1 day, covering the complete black-box assessment across all live hosts and the production of your executive summary alongside the auditor-ready technical appendix. Shall we lock in the target IP ranges so I can begin the initial enumeration?

@binayatri

Hi, I can approach this as a controlled external black box assessment, starting with strict scope validation and asset discovery across all three /24 ranges, followed by vulnerability assessment and carefully controlled exploitation. I’ll document evidence, reproduce validated findings, prioritize risk, and provide both an executive report and detailed technical appendix with remediation guidance. I have 13+ years of software engineering experience across Linux, networking, web applications, APIs and cloud systems, with strong experience analyzing technical systems and security issues. I can structure the engagement around audit-ready evidence and minimal production impact. Before proceeding, I’d like to confirm the specific Pen Test Certification required for acceptance. Let's connect and get started soon. Best regards, Binaya T.

@dhruvp0312

Hi, I can conduct an external black-box penetration test across your three /24 IPv4 ranges, covering public-facing web applications, email infrastructure, and SIP services with an audit-ready approach. My methodology includes: • Scope validation and rules of engagement • External reconnaissance and live-host/service discovery • Vulnerability scanning and manual validation • Controlled exploitation with production-safe testing • Web, email, and SIP security testing • Evidence collection with reproducible PoCs • Risk-based findings and remediation guidance • Compliance/control mapping • Executive summary + detailed technical appendix for auditors Typical tools: Nmap, Nessus, Burp Suite, Metasploit, and SIP-specific testing utilities, combined with manual validation to reduce false positives. For three /24 ranges, I would first identify live assets and services, then perform discovery, validation, controlled exploitation, evidence collection, and reporting. Estimated timeline: 5–10 business days depending on the number and complexity of live services. I can provide the required penetration-testing certification details and relevant experience for verification. I’m ready to review the scope, testing windows, and rules of engagement and begin.

@offensiumvault

We at Offensium Vault Private Limited (ISO 27001:2022 & ISO 9001:2015) can perform an external black-box penetration test across your three /24 IPv4 ranges, delivering an audit-ready assessment aligned with industry best practices. Methodology • External reconnaissance, enumeration, vulnerability assessment, and controlled exploitation following PTES, OWASP, NIST, and CVSS methodologies • Coverage of web applications, email infrastructure, SIP services, and exposed network assets • Non-disruptive testing with all findings manually verified Tools Nmap, Nessus, Burp Suite, Metasploit, Wireshark, Nuclei, OpenVAS, SIPVicious, SIPp, and custom scripts. Deliverables • Executive Summary for management • Detailed technical report with CVSS severity ratings, PoC evidence, reproduction steps, and remediation guidance • Technical appendix suitable for compliance audits • Findings mapped to relevant compliance controls where applicable Timeline 5–10 business days, depending on the number of live hosts and scope. We follow strict NDA, responsible disclosure, and can provide a penetration testing completion certificate/attestation along with the final report. Ready to begin immediately once the scope, Rules of Engagement, and testing window are confirmed.

@artemb35

Hi there, I can provide a reliable solution that delivers a defensible external black-box penetration test for your public-facing assets by focusing on reconnaissance, vulnerability validation, controlled exploitation, and audit-ready reporting. In my previous role, I successfully developed an external security assessment program that reduced critical exposure by 38%, improved remediation prioritization, and strengthened stakeholder confidence. Additionally, I implemented a reporting workflow that cut evidence整理 time by 42% and made auditor review straightforward. Option 1: A focused black-box assessment using Nmap, Nessus, Burp Suite, Metasploit, and SIP-specific utilities to test all live hosts across the three /24 ranges. This is efficient and provides strong validation of externally reachable risk, but it is more time-boxed and may surface fewer edge-case issues. Option 2: A deeper compliance-oriented engagement that adds expanded manual testing, richer proof-of-concept capture, and a more detailed control-mapping appendix. This gives stronger audit support and more actionable remediation guidance, but it requires a longer timeline. I can start right now.

@jonasdedzo

Hello, I can carry out a structured external black-box penetration test across the three /24 IPv4 ranges, covering public-facing web applications, email infrastructure, and SIP services. I would keep the assessment controlled and production-safe, with clear scope, testing windows, evidence collection, and escalation limits agreed before testing. My methodology would cover external reconnaissance, host and service discovery, vulnerability assessment, web security testing, network exposure analysis, and controlled exploitation where appropriate. Tools can include Nmap, Nessus, Burp Suite, Metasploit, and SIP-focused testing utilities based on the exposed services. The final deliverable would include an executive summary, prioritised technical findings, reproducible evidence, risk ratings, relevant compliance mapping, remediation guidance, and a technical appendix suitable for auditor review. I can also provide clear documentation of the methodology and testing coverage. Looking forward to work with you. Thanks

@amadorjay

Hi there, The challenge here lies in ensuring a thorough assessment without disrupting your production traffic. The focus will be on carefully scoping the external penetration test to cover all live hosts across your three /24 IPv4 ranges while adhering to compliance standards. I typically employ tools like Nmap for reconnaissance and Burp Suite for web vulnerabilities, ensuring a detailed yet non-intrusive approach. The final report will prioritize findings by risk, map them to compliance controls, and include clear remediation guidance along with a separate executive summary for auditors. Could you clarify any specific compliance standards you need to align with? Thank you.

@irfankhokhar1986

Hi, I reviewed your penetration testing requirements and can provide: * External black-box testing across all three /24 IPv4 ranges. * Reconnaissance, vulnerability discovery and controlled exploitation without internal credentials. * Careful scope validation and scheduling to cover live hosts while minimizing production impact. * Web application, email server and SIP service security testing. * Tools including Nmap, Nessus, Burp Suite, Metasploit and SIP-specific testing utilities as appropriate. * Risk-based findings with clear severity prioritization and compliance/control mapping. * Reproducible PoCs, evidence and detailed remediation recommendations. * Separate executive summary and technical appendix suitable for audit review. * Clear testing methodology, evidence collection and documentation throughout the engagement. * Penetration Test Certification/documentation as required. I’m ready to review the final scope and begin scheduling. Thanks, Irfan Khokhar

@bojans9

Hi, thanks for sharing the project. To be transparent: although I work across software, backend systems and automation, I don’t take on penetration‑testing or security‑audit engagements, including external black‑box assessments, reconnaissance, vulnerability discovery, controlled exploitation, compliance‑aligned reporting, or certification‑based security work. This scope requires a certified penetration tester experienced with multi‑range network assessments, evidence collection, and audit‑ready documentation. They’ll be a much better fit for the rigor and compliance requirements you’ve outlined. If you ever need help with technical workflow planning or automation strategy in another context, I can assist — but I’m not the right match for this security engagement.