Technical Information
| HTTP Status Code | 200 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 45.79.21.111 |
| Server Software | Apache/2.4.53 (CentOS Stream) OpenSSL/3.0.7 |
| Compression | gzip |
|
ℹ 🔵 Missing HSTS | HTTP Strict Transport Security is not configured. Recommended for HTTPS sites. |
|
ℹ 🔵 Missing Content Security Policy | CSP is not configured. It helps prevent XSS attacks and content injection. |
|
ℹ 🔵 Missing X-Frame-Options | The site can be embedded in iframes by third parties (clickjacking risk). |
HTTP Status Code 200
HTTP Version HTTP/1.1
HTTPS ✔ Available
IP Address 45.79.21.111
Server Software Apache/2.4.53 (CentOS Stream) OpenSSL/3.0.7
Compression gzip
ℹ 🔵 Missing HSTS HTTP Strict Transport Security is not configured. Recommended for HTTPS sites.
ℹ 🔵 Missing Content Security Policy CSP is not configured. It helps prevent XSS attacks and content injection.
ℹ 🔵 Missing X-Frame-Options The site can be embedded in iframes by third parties (clickjacking risk).
Redirect Chain
| # | URL | HTTP Status Code | Status |
| 1 | https://nagios.org:443 | 301 | HTTP/2 301 |
| 2 | https://www.nagios.org/ | 200 | HTTP/2 200 |
#1 URL https://nagios.org:443
HTTP Status Code 301
Status HTTP/2 301
#2 URL https://www.nagios.org/
HTTP Status Code 200
Status HTTP/2 200
Performance
| DNS Lookup | 21.1 ms |
| TCP Connect | 131.4 ms |
| TLS Handshake | 115.5 ms |
| Time To First Byte (TTFB) | 415.6 ms |
| Content Download | 110.3 ms |
| Total Response Time | 525.9 ms |
DNS Lookup 21.1 ms
TCP Connect 131.4 ms
TLS Handshake 115.5 ms
Time To First Byte (TTFB) 415.6 ms
Content Download 110.3 ms
Total Response Time 525.9 ms
Security
| HTTPS | ✔ Enabled |
| HSTS | ✘ Not configured |
| CSP | ⚠ Not configured |
| X-Frame-Options | ⚠ Not configured |
| X-Content-Type-Options | ⚠ Not configured |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Enabled
HSTS ✘ Not configured
CSP ⚠ Not configured
X-Frame-Options ⚠ Not configured
X-Content-Type-Options ⚠ Not configured
HTTP/2 ⚠ HTTP/1.1
SEO Quick Check
| Title | Nagios | Open Source Network Monitoring Solution |
| Meta Description | Nagios Core is a powerful open source monitoring engine with support for plugins, add-ons, NCPA, Mod-Gearman, and community-driven integrations. |
| Canonical | https://www.nagios.org/ |
| Robots Meta | follow, index, max-snippet:-1, max-video-preview:-1, max-image-preview:large |
| Open Graph Title | Nagios: Free Open Source IT Monitoring Tools |
| Open Graph Description | Prevent IT downtime before it impacts your systems with Nagios Core – the free, open source monitoring solution trusted by 1M+ users worldwide. Monitor severs, networks & applications with powerful community-driven tools. |
| Open Graph Image | https://www.nagios.org/wp-content/uploads/2025/05/nagios.... |
| Twitter Card | summary_large_image |
| Twitter Title | Nagios: Free Open Source IT Monitoring Tools |
| Twitter Description | Prevent IT downtime before it impacts your systems with Nagios Core – the free, open source monitoring solution trusted by 1M+ users worldwide. Monitor severs, networks & applications with powerful community-driven tools. |
| Twitter Image | https://www.nagios.org/wp-content/uploads/2025/05/nagios.... |
Title Nagios | Open Source Network Monitoring Solution Meta Description Nagios Core is a powerful open source monitoring engine with support for plugins, add-ons, NCPA, Mod-Gearman, and community-driven integrations. Canonical https://www.nagios.org/ Robots Meta follow, index, max-snippet:-1, max-video-preview:-1, max-image-preview:large Open Graph Title Nagios: Free Open Source IT Monitoring Tools Open Graph Description Prevent IT downtime before it impacts your systems with Nagios Core – the free, open source monitoring solution trusted by 1M+ users worldwide. Monitor severs, networks & applications with powerful community-driven tools. Open Graph Image https://www.nagios.org/wp-content/uploads/2025/05/nagios.... Twitter Card summary_large_image Twitter Title Nagios: Free Open Source IT Monitoring Tools Twitter Description Prevent IT downtime before it impacts your systems with Nagios Core – the free, open source monitoring solution trusted by 1M+ users worldwide. Monitor severs, networks & applications with powerful community-driven tools. Twitter Image https://www.nagios.org/wp-content/uploads/2025/05/nagios.... Detected Technologies
| Technology | WordPress jQuery Google Analytics Google Tag Manager Apache PHP Gatsby Intercom |
Technology WordPress jQuery Google Analytics Google Tag Manager Apache PHP Gatsby Intercom
HTTP Headers
| Date
| Thu, 20 Aug 2026 16:57:56 GMT |
| Server
| Apache/2.4.53 (CentOS Stream) OpenSSL/3.0.7 |
| X-powered-by
| PHP/7.4.33 |
| Last-modified
| Thu, 20 Aug 2026 14:11:42 GMT |
| Cache-control
| max-age=2592000 |
| Expires
| Sat, 19 Sep 2026 16:57:56 GMT |
| Vary
| Accept-Encoding |
| Content-encoding
| gzip |
| Content-length
| 36243 |
| Content-type
| text/html; charset=UTF-8 |
Meta Tags
| Viewport | width=device-width, initial-scale=1.0 |
| Description | Nagios Core is a powerful open source monitoring engine with support for plugins, add-ons, NCPA, Mod-Gearman, and community-driven integrations. |
| Robots | follow, index, max-snippet:-1, max-video-preview:-1, max-image-preview:large |
| Google-site-verification | google-site-verification=_1r9sBmfnDXfhm92rnuCufgMHHleU9-Al1TKOqkg2WQ |
| Generator | Elementor 4.2.3; features: e_font_icon_svg, additional_custom_breakpoints; settings: css_print_method-external, google_font-enabled, font_display-swap |
| Msapplication-TileImage |  |
Date Thu, 20 Aug 2026 16:57:56 GMT
Server Apache/2.4.53 (CentOS Stream) OpenSSL/3.0.7
X-powered-by PHP/7.4.33
Last-modified Thu, 20 Aug 2026 14:11:42 GMT
Cache-control max-age=2592000
Expires Sat, 19 Sep 2026 16:57:56 GMT
Vary Accept-Encoding
Content-encoding gzip
Content-length 36243
Content-type text/html; charset=UTF-8
