Regulatory Financial Reporting via FTPS

Explicit TLS, cipher suite lockdown, GeoIP blocking, and a complete audit trail for examiner requests.

The Problem

A regional bank submits daily transaction reports to a financial regulator. The regulator's gateway accepts only FTPS with explicit TLS and mandates specific cipher suites — no legacy SSL, no weak ciphers, no plain-text fallback. The bank must also restrict outbound connections to the regulator's known IP range and block all inbound connections from unauthorized countries.

The compliance team faces quarterly examiner visits where they must produce a complete audit trail showing every file submitted, the exact timestamp, the source IP, and the TLS cipher used for the connection. Today, audit data is scattered across FTP server logs, firewall logs, and manual spreadsheets. Assembling a report takes days of cross-referencing.

A recent incident where a contractor's VPN credentials were used from an overseas IP address exposed the lack of geographic access controls. The bank's CISO has mandated GeoIP blocking to restrict connections to domestic IP ranges only, combined with an explicit IP allow list for the regulator's submission gateway.

How Stylus SFTP Server Solves It

FTPS with explicit TLS and configurable cipher suites meets the regulator's protocol requirements. GeoIP blocking and IP allow lists enforce geographic access control. Every event streams to the SIEM for instant examiner reports.

Bank Internal Systems Report Generator FTPS GeoIP Shield Country Block IP Allow List Blocked: CN, RU, ... Stylus SFTP Server FTPS Explicit TLS TLS 1.2+ Only AES-256-GCM Ciphers Reports Regulator FTPS Gateway Daily Submissions Syslog SIEM Examiner Reports Compliance Team Instant audit reports

Step-by-Step Setup

Four configuration blocks lock down the server to meet the regulator's exact technical requirements.

sftp-server.xml — FTPS explicit TLS with cipher suite restriction
<ftps>
  <enabled>true</enabled>
  <port>21</port>
  <implicit>false</implicit> <!-- Explicit TLS (AUTH TLS) -->

  <ssl>
    <keystore>${STYLUS_SFTPSERVER_DATA}/conf/ftpserver.p12</keystore>
    <keystore-type>PKCS12</keystore-type>
    <!-- TLS 1.2 minimum, no legacy SSL -->
    <protocols>
      <protocol>TLSv1.2</protocol>
      <protocol>TLSv1.3</protocol>
    </protocols>
    <!-- Regulator-approved cipher suites only -->
    <cipher-suites>
      <cipher>TLS_AES_256_GCM_SHA384</cipher>
      <cipher>TLS_AES_128_GCM_SHA256</cipher>
      <cipher>TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384</cipher>
      <cipher>TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256</cipher>
    </cipher-suites>
  </ssl>
</ftps>
sftp-server.xml — GeoIP country blocking
<!-- Block all connections except US domestic IPs -->
<geoip>
  <enabled>true</enabled>
  <mode>allow</mode>
  <countries>
    <country>US</country>
  </countries>
</geoip>
sftp-server.xml — IP allow list for regulator gateway
<!-- Only accept connections from known IP ranges -->
<ip-filter>
  <allow>
    <!-- Bank internal network -->
    <cidr>10.0.0.0/8</cidr>
    <!-- Regulator submission gateway -->
    <cidr>203.0.113.0/24</cidr>
    <!-- Regulator backup gateway -->
    <cidr>198.51.100.0/24</cidr>
  </allow>
</ip-filter>
sftp-server.xml — syslog forwarding to SIEM for examiner reports
<audit>
  <database>true</database>
  <log>true</log>
  <syslog>
    <enabled>true</enabled>
    <host>siem.bank.internal</host>
    <port>6514</port>
    <protocol>tls</protocol> <!-- Encrypted syslog -->
    <format>rfc5424</format>
  </syslog>
</audit>

Key Benefits

Regulator-Grade TLS

Explicit TLS with configurable cipher suites meets the regulator's exact cryptographic requirements. TLS 1.2 minimum enforced at the protocol level. No weak cipher fallback possible.

Geographic Access Control

GeoIP blocking restricts connections to domestic IP ranges. The IP allow list further narrows access to the bank's internal network and the regulator's known gateways. Unauthorized countries are rejected before authentication.

Instant Examiner Reports

Every connection, file transfer, TLS handshake, and blocked IP is recorded and streamed to the SIEM in real time. Generate the complete audit reports that examiners require in seconds, not days.

Defense in Depth

Three layers of protection work together: GeoIP blocks entire countries, the IP allow list restricts to known ranges, and rate limiting throttles brute-force attempts. Account lockout provides a final safety net.

Secure Your Regulatory File Transfers

Download the free evaluation and configure regulator-compliant FTPS in under five minutes.

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