SSL Certificate Analysis for seas.upenn.edu - Security Grade & TLS Configuration

Certificate Information

Subject

C=US, ST=Pennsylvania, O=The Trustees of the University of Pennsylvania, CN=seas.upenn.edu

Issuer

C=US, O=Internet2, CN=InCommon ECC Server CA 2

Valid From

August 13, 2025

Valid Until

August 13, 2026 264 days

Public Key

ECDSA 256 bit (P-256) Adequate

Signature Algorithm

ECDSA-SHA256

SHA-256 Fingerprint

3B:A6:64:A0:2A:88:7A:1C:9C:DE:4A:56:81:BB:B7:2B:2F:A3:8A:65:F2:56:09:2D:CC:F1:3B:6E:41:54:6D:75

Alternative Names

64 domains

Security Configuration

TLS Protocols

TLS 1.2 TLS 1.3

Forward Secrecy

Supported (Modern clients use PFS)

HTTP Security Headers

Status

Strict-Transport-Security

Missing

Not configured

Content-Security-Policy

Missing

Not configured

X-Frame-Options

Missing

Not configured

X-Content-Type-Options

Missing

Not configured

Referrer-Policy

Missing

Not configured

Permissions-Policy

Missing

Not configured

Recommendations

• Add Strict-Transport-Security header with max-age of at least 1 year
• Add Content-Security-Policy header to prevent XSS attacks
• Add X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking
• Add X-Content-Type-Options: nosniff
• Add Referrer-Policy header (recommended: strict-origin-when-cross-origin)
• Consider adding Permissions-Policy to control browser features

CAA Records (Certificate Authority Authorization)

CAA Records

Not Configured (Any CA can issue certificates)

CAA Issues

• No CAA records configured - any CA can issue certificates

Recommendations

• Implement CAA records to restrict which CAs can issue certificates for your domain
• This adds an extra layer of security against unauthorized certificate issuance
• Example: Add CAA record 'example.com. CAA 0 issue "letsencrypt.org"'
• Consider adding 'iodef' record to receive security incident reports

Subject Alternative Names

64 domains

acasa.upenn.edu airfoundry.upenn.edu cemb.upenn.edu cis.upenn.edu dmd.upenn.edu ee.upenn.edu emtm.upenn.edu energy.upenn.edu ese.upenn.edu grasp.upenn.edu healthtech.upenn.edu hms.upenn.edu infodem.upenn.edu istar.upenn.edu lrsm.upenn.edu me.upenn.edu mkse.upenn.edu nano.upenn.edu nanotech.upenn.edu nets.upenn.edu neuroengineering.upenn.edu perception.upenn.edu pics.upenn.edu priml.upenn.edu robotics.upenn.edu seas.upenn.edu seclab.upenn.edu tech-house.upenn.edu vidi.upenn.edu warrencenter.upenn.edu weisstech.upenn.edu xlab.upenn.edu *.acasa.upenn.edu *.airfoundry.upenn.edu *.cemb.upenn.edu *.cis.upenn.edu *.dmd.upenn.edu *.ee.upenn.edu *.emtm.upenn.edu *.energy.upenn.edu *.ese.upenn.edu *.grasp.upenn.edu *.healthtech.upenn.edu *.hms.upenn.edu *.infodem.upenn.edu *.istar.upenn.edu *.lrsm.upenn.edu *.me.upenn.edu *.mkse.upenn.edu *.nano.upenn.edu *.nanotech.upenn.edu *.nets.upenn.edu *.neuroengineering.upenn.edu *.perception.upenn.edu *.pics.upenn.edu *.priml.upenn.edu *.robotics.upenn.edu *.seas.upenn.edu *.seclab.upenn.edu *.tech-house.upenn.edu *.vidi.upenn.edu *.warrencenter.upenn.edu *.weisstech.upenn.edu *.xlab.upenn.edu