Isolated SFTP accounts
Restrict scoped transfer users to approved directory trees with chroot and filesystem permissions. We test the account’s effective access and review required ownership and write paths.
SFTP · SSH KEYS · PGP / GPG AUTOMATION
Hardened SFTP & Secure File Transfer Infrastructure
Controlled, automated, and isolated data transfer pipelines.
Transmitting sensitive financial, healthcare, or client data takes more than default server settings. OS Assistance designs, deploys, and maintains Linux-based SFTP and encryption workflows with controls for access, isolation, automation, logging, and operational handoff.
We can restrict transfer accounts to approved directory trees, use SSH public keys for authentication, and automate PGP/GPG processing at the agreed points in a file-exchange workflow.
Access, key custody, data handling, and change approvals are agreed before implementation.
Partner exchangeApplication feedsAutomated file operations
SECURITY ARCHITECTURE & IMPLEMENTATION
Layered controls for a dependable transfer workflow.
We design around the users, systems, partner requirements, key ownership, and file-handling rules in your environment.
SSH key authentication
Configure public-key login for transfer accounts using Ed25519 where supported, or an organization-approved RSA key policy where compatibility or policy requires it. Password login can be disabled for the scoped accounts.
Automated PGP/GPG workflows
Automate agreed encryption, decryption, signing, validation, and routing steps. Define recipient keys, private-key custody, rotation, error handling, and retry behavior as part of the design.
Logging & operational controls
Configure transfer logging and useful alerts. Fail2ban or other network controls can be added where compatible with the server, access pattern, and your security policy.
FROM REQUIREMENTS TO HANDOFF
Build the workflow around the data path.
File transfers often cross teams and organizations. We document the handoffs, failure conditions, and operational owners so the process is supportable after rollout.
Discuss your file-exchange requirements- 01
Map senders and recipients
Identify partner systems, users, destinations, transfer frequency, and file types.
- 02
Define access and key ownership
Agree SSH login policy, directory boundaries, PGP/GPG recipients, and private-key custody.
- 03
Implement and test
Configure the approved path, verify permissions and encryption steps, and exercise failure handling.
- 04
Document operations
Hand off account procedures, rotation expectations, log locations, and recovery steps.
ONGOING LINUX CARE
Keep transfer operations maintainable.
Approved SFTP configuration, account provisioning, and transfer automation can be queued as in-scope Linux Care work. The retainer covers approved Linux servers and in-scope tasks during weekday Office Hours, handled one active task at a time.
Explore Linux Care View plans & pricingFAQ
Secure transfer, clear expectations.
Have a specific partner, encryption, or Linux access requirement? Contact OS Assistance or request a quote.
Review SLA & support scopeDoes SFTP encrypt files while they are stored?
SFTP encrypts the connection while files are transferred; it does not automatically encrypt stored files. A PGP/GPG workflow or storage-level encryption can protect files at rest when included in the approved design.
Can you automate both incoming and outgoing PGP/GPG workflows?
Yes. We map where encryption, decryption, signing, and validation belong based on senders, recipients, and key ownership. The workflow uses recipient public keys for encryption and client-approved private-key custody for decryption.
Can you disable password login and isolate partner accounts?
We can configure key-based SSH authentication and limit SFTP-only accounts to approved paths. The specific authentication policy, chroot layout, permissions, and any impact to other server users are reviewed before changes are applied.
Does an SFTP implementation certify regulatory compliance?
No. Technical controls can support your organization’s security and compliance program, but an SFTP configuration alone does not certify compliance. Your organization remains responsible for its policies, risk assessment, and regulatory obligations.
Are SFTP and automation changes included in the monthly plan?
Approved SFTP configuration and related automation may be included as in-scope Linux Care tasks. Linux Care work is handled during Monday–Friday, 9 a.m.–5 p.m. Central service hours, one active task at a time. Scope is confirmed before work begins; see Linux Care and the SLA for details.
START WITH YOUR DATA FLOW
Plan a secure file-transfer workflow.
Share your partner requirements, Linux environment, transfer schedule, and encryption needs. We’ll help scope the implementation.