Professional SSL Certificate Services

SSL/TLS services at Viet SEO help you establish HTTPS for business websites, online stores, and web applications. Choose according to domain coverage, identity validation, and installation or renewal needs.

Compare the eight reference products below or call/Zalo +84 917 212 969 for a quotation.

SSL Certificate Pricing

SSL certificate pricing depends on the validation level, number of protected domains, wildcard support, Certificate Authority, warranty or service terms, and included installation assistance.

The following packages are provided as reference options.

Reference prices exclude VAT unless otherwise stated. Certificate prices, validation requirements, supported domain coverage, and promotional terms may change over time.

Standard setup assistance may not include complex server repair, reverse-proxy configuration, application changes, malware cleanup, mixed-content correction, or large multi-server deployments.

Annual fees and certificate validity are different: an annual service period does not mean one certificate remains valid for the entire year. Confirm reissuance, validation, installation, and expiry-monitoring arrangements for the selected product.

Choose the Validation Level

• DV: verifies control of the domain; suitable for many websites.
• OV: adds verification of the applicant organization.
• EV: uses a more extensive organization-verification process.

The main difference is identity validation. Paid or EV certificates do not automatically provide stronger encryption. Modern browsers generally show organization details through certificate information rather than a prominent company name in the address bar.

Choose the Domain Coverage

• Single domain: confirm every required hostname, including whether both the root domain and www are included.
• Wildcard: typically matches one subdomain level, such as shop.example.com under *.example.com. Root-domain coverage must be included separately; deeper names such as account.shop.example.com are not automatically covered.
• SAN/Multi-Domain: protects the specified hostnames in one certificate. Confirm included names and any additional-name fees.

Commercial SSL vs. Free SSL

A paid certificate does not automatically use stronger encryption than a correctly configured free DV certificate. Commercial products may provide organization validation, multi-domain coverage, vendor support, warranties, or specific enterprise features.

What HTTPS Protects

SSL/TLS protects data in transit between the user and server, including logins, forms, sessions, and API traffic. Browsers check certificate trust, hostname coverage, and validity when establishing the connection.

HTTPS does not remove malware, vulnerable software, weak passwords, compromised accounts, or DDoS risks. A valid certificate also does not prove that every website is legitimate. Maintain application security, access controls, updates, and backups separately.

Registration and Installation

1. List the domains, subdomains, and service hostnames that need coverage.
2. Confirm validation level, product, fees, and support scope.
3. Review server compatibility, access, DNS, and existing settings.
4. Create the CSR and protect the private key; complete domain and organization verification as required.
5. Install the certificate and intermediate chain on the correct TLS endpoint.
6. Test coverage, redirects, mixed content, forms, checkout, APIs, and renewal arrangements.

Issuance depends on the Certificate Authority, validation method, DNS, documentation, and applicant responsiveness. DV can be quick after successful validation; OV and EV require additional checks. Timelines are estimates.

HTTPS Migration and Mixed Content

Installing a certificate is only part of migrating a website. Back up files and databases, update internal URLs and resources, configure redirects, review canonical tags and sitemaps, and test integrations.

Mixed content occurs when an HTTPS page loads HTTP resources. Correct hard-coded links, database URLs, theme/plugin settings, and unsupported external resources. Complex application changes, proxy repairs, and large deployments need an agreed scope and may be quoted separately.

Avoid Expiry and Renewal Failures

• Monitor the actual expiry of each installed certificate.
• Use automation where supported and verify successful renewal jobs.
• Keep DNS, validation access, and administrator contacts current.
• Test the certificate chain and services after each replacement.

Expired or incorrectly installed certificates can cause browser errors and failed logins, checkout, APIs, or server connections. Annual billing should not replace monitoring of the installed certificate.

How to Check Your Certificate

Open your browser’s connection information and review the hostname, issuer, expiry date, Subject Alternative Names, and trust status. Common errors include name mismatch, expiry, an incomplete chain, a mismatched private key, or conflicting redirects.

SSL Support at Viet SEO

Viet SEO has provided domain, hosting, server administration, website development, maintenance, security, and SEO services since 2007. We can assist with product selection, issuance, CSR preparation, installation, HTTPS migration, renewal configuration, and troubleshooting according to the agreed scope.

Installation is reviewed for compatibility and sufficient access. Hosting control panels, web servers, proxies, CDNs, and load balancers may require different configurations.

Frequently Asked Questions

Is free SSL secure?

A correctly configured free DV certificate can provide modern transport encryption. Select a paid product when its validation or service terms meet a specific requirement.

Can one certificate cover multiple domains?

Yes, if a suitable SAN product includes every required hostname. Confirm the exact list before ordering.

Can Viet SEO install it on another provider’s server?

Yes, subject to compatibility, access, and a technical review.

Does SSL guarantee better rankings or payment compliance?

No. HTTPS supports secure connections, while rankings and payment compliance depend on broader website and operational requirements.

Can certificates protect email connections?

They can encrypt supported mail-server connections. Email security also requires account protection, authentication, anti-spam controls, and correct configuration.

Request an SSL Quotation

Send your domain/subdomain list, server platform, validation needs, and installation or migration requirements. Viet SEO will confirm a suitable product, total fees, and support scope.

• Phone and Zalo: +84 917 212 969
• Contact person: Mr. Viet
• Service area: Vietnam and international markets