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Running RHEL 9 with iptables I can reach [login to view URL], yet any file upload stalls. The traffic is routed through Cloudflare and the service calls several sub-domains, so I’m convinced outbound requests are hitting IP-based restrictions that my firewall is silently dropping. I have not built a whitelist yet and need help discovering every endpoint involved. What I need from you: • Capture and inspect the outbound upload flow—feel free to rely on your own custom scripts for deeper parsing. • Identify every IP address, domain, or CIDR block the conversation touches, including any Cloudflare edges that appear only during the upload handshake. • Propose and implement the minimal iptables changes (or an equally secure alternative) that let uploads complete while keeping the rest of the Internet locked down. Acceptance is simple: drag-and-drop uploads to [login to view URL] must succeed repeatedly from this host without opening wide outbound access, and your rule set or script notes should be clear enough for me to maintain going forward.
Projekt-ID: 40050280
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4 Freelancer bieten im Durchschnitt ₹1.250 INR für diesen Auftrag

As an avid network and system engineer, I have fascinatingly handled complex projects just like yours, more frequently involving multiple protocols and platforms. Having worked with a pool of notable vendors ranging from Cisco, IBM to VMware and various cloud providers, I treasure an intimate familiarity with multi-tiered networking environments -scaling my DNS expertise to capture every IP address and CIDR block your upload flow could touch. My broad skill set including Network administration for routing, switching, VPN configurations is perfectly in sync with your requirements. Furthermore my adeptness in securing wireless networks will prove invaluable when addressing the Cloudflare edges dynamics that arise during the upload handshake. Moreover, my extensive experience in maintaining secure Linux environments paired with a proficiency at UFbuntu ensures that not only will the solution be precise as you need but it would be easily maintainable in future as well. From designing the whitelisting solution on iptables to implementing and documenting the process, I shall diligently help you not only achieve successful uploads functionality but also provide maintaining notes so simple and lucid that even a non IT person can follow them without hassle. Don't wait any longer! Let's simplify this problem together! The opportunity to render you a long-term compatible solution is what compels me to work perfectly well within your timelines while exceeding your expectations.
₹1.500 INR in 1 Tag
7,0
7,0

Hello, I’m an IT expert with over 20 years of experience in the industry. I hold certifications as a Cisco Certified Networking Professional (300-100 and 300-115), Linux Certified Professional (LPI 101, 102, 103), Red Hat Certified System Administrator, VMware Certified Professional (versions 4, 5, and 5.5), as well as being a Microsoft System Administrator/Engineer from 2003 to 2022 and AZ104
₹1.500 INR in 1 Tag
3,4
3,4

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