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book.systemsapproach.org Open in urlscan Pro
128.112.136.67  Public Scan

Go To Rescan Add Verdict Report
Submitted URL: http://book.systemsapproach.org/
Effective URL: https://book.systemsapproach.org/
Submission: On October 23 via api from US — Scanned from DE
 Behaviour Indicators
Similar DOM Content API
Verdicts

Summary

This website contacted 4 IPs in 2 countries across 3 domains to perform 23 HTTP transactions. The main IP is 128.112.136.67, located in Princeton, United States and belongs to PRINCETON-AS, US. The main domain is book.systemsapproach.org.
TLS certificate: Issued by R3 on October 3rd 2023. Valid for: 3 months.
This is the only time book.systemsapproach.org was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

IP Address AS Autonomous System
1 16 128.112.136.67 88 (PRINCETON-AS)
3 2a00:1450:400... 15169 (GOOGLE)
3 2001:4860:480... 15169 (GOOGLE)
2 2a00:1450:400... 15169 (GOOGLE)
23 4
Apex Domain
Subdomains		 Transfer
16 systemsapproach.org
book.systemsapproach.org
897 KB
5 google-analytics.com
region1.google-analytics.com — Cisco Umbrella Rank: 2250
www.google-analytics.com — Cisco Umbrella Rank: 42
21 KB
3 googletagmanager.com
www.googletagmanager.com — Cisco Umbrella Rank: 56
232 KB
23 3
Domain Requested by
16 book.systemsapproach.org 1 redirects book.systemsapproach.org
3 region1.google-analytics.com www.googletagmanager.com
3 www.googletagmanager.com book.systemsapproach.org
www.googletagmanager.com
2 www.google-analytics.com www.googletagmanager.com
www.google-analytics.com
23 4

This site contains links to these domains. Also see Links.

Domain
systemsapproach.org
www.sphinx-doc.org
github.com
readthedocs.org
Subject Issuer Validity Valid
book-sys-appr.cs.princeton.edu
R3		 2023-10-03 -
2024-01-01		 3 months crt.sh
*.google-analytics.com
GTS CA 1C3		 2023-09-28 -
2023-12-21		 3 months crt.sh

This page contains 1 frames:

Primary Page: https://book.systemsapproach.org/
Frame ID: E1D8C505AA2F1F91180C205E50F69775
Requests: 23 HTTP requests in this frame

Screenshot
Live screenshot
Full Image

Page Title

Computer Networks: A Systems Approach — Computer Networks: A Systems Approach Version 6.2-dev documentation

Page URL History Show full URLs

  1. http://book.systemsapproach.org/ HTTP 302
    https://book.systemsapproach.org/ Page URL

Detected technologies

Overall confidence: 100%
Detected patterns
  • (?:F|f)o(?:n|r)t-?(?:A|a)wesome(?:.*?([0-9a-fA-F]{7,40}|[\d]+(?:.[\d]+(?:.[\d]+)?)?)|)
Overall confidence: 100%
Detected patterns
  • google-analytics\.com/(?:ga|urchin|analytics)\.js
Overall confidence: 100%
Detected patterns
  • googletagmanager\.com/gtag/js
Overall confidence: 100%
Detected patterns
  • <link[^>]+pygments\.css["']
Overall confidence: 100%
Detected patterns
  • underscore.*\.js(?:\?ver=([\d.]+))?
Overall confidence: 100%
Detected patterns
  • jquery.*\.js(?:\?ver(?:sion)?=([\d.]+))?

Page Statistics

23
Requests

100 %
HTTPS

75 %
IPv6

3
Domains

4
Subdomains

4
IPs

2
Countries

1150 kB
Transfer

1797 kB
Size

5
Cookies

Page URL History

This captures the URL locations of the websites, including HTTP redirects and client-side redirects via JavaScript or Meta fields.

  1. http://book.systemsapproach.org/ HTTP 302
    https://book.systemsapproach.org/ Page URL

Redirected requests

There were HTTP redirect chains for the following requests:

23 HTTP transactions

Resource
Path		 Size
x-fer		 Type
MIME-Type
Primary Request /
book.systemsapproach.org/
Redirect Chain
  • http://book.systemsapproach.org/
  • https://book.systemsapproach.org/
17 KB
4 KB 		Document
General
Check archive.org
Download Go to
Full URL
https://book.systemsapproach.org/
Protocol
HTTP/1.1
Security
TLS 1.2, ECDHE_RSA, AES_256_GCM
Server
128.112.136.67 Princeton, United States, ASN88 (PRINCETON-AS, US),
Reverse DNS
Software
Apache /
Resource Hash
647b2f35f5f3fdec4934a4b3f1af006f12a7fd1cb4c87397ba4a8988b6f89d8d

Request headers

Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.5993.88 Safari/537.36
accept-language
de-DE,de;q=0.9

Response headers

Accept-Ranges
bytes
Connection
Keep-Alive
Content-Encoding
gzip
Content-Length
3621
Content-Type
text/html; charset=UTF-8
Date
Mon, 23 Oct 2023 20:03:22 GMT
ETag
"4405-606537e8a8c53-gzip"
Keep-Alive
timeout=15, max=100
Last-Modified
Wed, 27 Sep 2023 09:05:35 GMT
Server
Apache
Vary
Accept-Encoding
Via
1.1 book-sys-appr.cs.princeton.edu

Redirect headers

Connection
Keep-Alive
Content-Length
217
Content-Type
text/html; charset=iso-8859-1
Date
Mon, 23 Oct 2023 20:03:22 GMT
Keep-Alive
timeout=15, max=100
Location
https://book.systemsapproach.org/
Server
Apache
pygments.css
book.systemsapproach.org/_static/ 		5 KB
1 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://book.systemsapproach.org/_static/pygments.css
Requested by
Host: book.systemsapproach.org
URL: https://book.systemsapproach.org/
Protocol
HTTP/1.1
Security
TLS 1.2, ECDHE_RSA, AES_256_GCM
Server
128.112.136.67 Princeton, United States, ASN88 (PRINCETON-AS, US),
Reverse DNS
Software
Apache /
Resource Hash
316dc87150077b0ab61a35963b169f935e873e2ce1a32f0fd7d2ccc34978fd5d

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://book.systemsapproach.org/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.5993.88 Safari/537.36

Response headers

Date
Mon, 23 Oct 2023 20:03:22 GMT
Content-Encoding
gzip
Via
1.1 book-sys-appr.cs.princeton.edu
Last-Modified
Wed, 27 Sep 2023 09:05:36 GMT
Server
Apache
ETag
"1326-606537e953af1-gzip"
Vary
Accept-Encoding
Content-Type
text/css
Connection
Keep-Alive
Accept-Ranges
bytes
Keep-Alive
timeout=15, max=99
Content-Length
1027
theme.css
book.systemsapproach.org/_static/css/ 		127 KB
22 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://book.systemsapproach.org/_static/css/theme.css
Requested by
Host: book.systemsapproach.org
URL: https://book.systemsapproach.org/
Protocol
HTTP/1.1
Security
TLS 1.2, ECDHE_RSA, AES_256_GCM
Server
128.112.136.67 Princeton, United States, ASN88 (PRINCETON-AS, US),
Reverse DNS
Software
Apache /
Resource Hash
af78284d3c7a8ab0917208ddc2a71854d4b552802104a7146f8705dca8dd88d1

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://book.systemsapproach.org/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.5993.88 Safari/537.36

Response headers

Date
Mon, 23 Oct 2023 20:03:22 GMT
Content-Encoding
gzip
Via
1.1 book-sys-appr.cs.princeton.edu
Last-Modified
Wed, 27 Sep 2023 09:05:35 GMT
Server
Apache
ETag
"1fa8a-606537e92f8b9-gzip"
Vary
Accept-Encoding
Content-Type
text/css
Connection
Keep-Alive
Accept-Ranges
bytes
Keep-Alive
timeout=15, max=98
Content-Length
22454
rtd_theme_mods.css
book.systemsapproach.org/_static/css/ 		2 KB
1 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://book.systemsapproach.org/_static/css/rtd_theme_mods.css
Requested by
Host: book.systemsapproach.org
URL: https://book.systemsapproach.org/
Protocol
HTTP/1.1
Security
TLS 1.2, ECDHE_RSA, AES_256_GCM
Server
128.112.136.67 Princeton, United States, ASN88 (PRINCETON-AS, US),
Reverse DNS
Software
Apache /
Resource Hash
6356fe7da211260c65d752567469d3dd16f6c7f6e9802786adc2305fefb9e661

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://book.systemsapproach.org/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.5993.88 Safari/537.36

Response headers

Date
Mon, 23 Oct 2023 20:03:22 GMT
Content-Encoding
gzip
Via
1.1 book-sys-appr.cs.princeton.edu
Last-Modified
Wed, 27 Sep 2023 09:05:36 GMT
Server
Apache
ETag
"640-606537e94e4d2-gzip"
Vary
Accept-Encoding
Content-Type
text/css
Connection
Keep-Alive
Accept-Ranges
bytes
Keep-Alive
timeout=15, max=100
Content-Length
797
documentation_options.js
book.systemsapproach.org/_static/ 		365 B
639 B 		Script
General
Check archive.org
Download Go to
Full URL
https://book.systemsapproach.org/_static/documentation_options.js
Requested by
Host: book.systemsapproach.org
URL: https://book.systemsapproach.org/
Protocol
HTTP/1.1
Security
TLS 1.2, ECDHE_RSA, AES_256_GCM
Server
128.112.136.67 Princeton, United States, ASN88 (PRINCETON-AS, US),
Reverse DNS
Software
Apache /
Resource Hash
a919ca670bf1295ae92d20df481c2f339768e0507564e3f99456c0d614181ee6

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://book.systemsapproach.org/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.5993.88 Safari/537.36

Response headers

Date
Mon, 23 Oct 2023 20:03:22 GMT
Content-Encoding
gzip
Via
1.1 book-sys-appr.cs.princeton.edu
Last-Modified
Wed, 27 Sep 2023 09:05:35 GMT
Server
Apache
ETag
"16d-606537e92be18-gzip"
Vary
Accept-Encoding
Content-Type
application/javascript
Connection
Keep-Alive
Accept-Ranges
bytes
Keep-Alive
timeout=15, max=100
Content-Length
263
jquery.js
book.systemsapproach.org/_static/ 		87 KB
31 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://book.systemsapproach.org/_static/jquery.js
Requested by
Host: book.systemsapproach.org
URL: https://book.systemsapproach.org/
Protocol
HTTP/1.1
Security
TLS 1.2, ECDHE_RSA, AES_256_GCM
Server
128.112.136.67 Princeton, United States, ASN88 (PRINCETON-AS, US),
Reverse DNS
Software
Apache /
Resource Hash
f7f6a5894f1d19ddad6fa392b2ece2c5e578cbf7da4ea805b6885eb6985b6e3d

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://book.systemsapproach.org/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.5993.88 Safari/537.36

Response headers

Date
Mon, 23 Oct 2023 20:03:22 GMT
Content-Encoding
gzip
Via
1.1 book-sys-appr.cs.princeton.edu
Last-Modified
Wed, 27 Sep 2023 09:05:36 GMT
Server
Apache
ETag
"15d84-606537e95a74e-gzip"
Vary
Accept-Encoding
Content-Type
application/javascript
Connection
Keep-Alive
Accept-Ranges
bytes
Keep-Alive
timeout=15, max=100
Content-Length
30910
underscore.js
book.systemsapproach.org/_static/ 		19 KB
8 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://book.systemsapproach.org/_static/underscore.js
Requested by
Host: book.systemsapproach.org
URL: https://book.systemsapproach.org/
Protocol
HTTP/1.1
Security
TLS 1.2, ECDHE_RSA, AES_256_GCM
Server
128.112.136.67 Princeton, United States, ASN88 (PRINCETON-AS, US),
Reverse DNS
Software
Apache /
Resource Hash
218fb1c1fc72e9af6b866f430be2a67fa376392b4db2f4dbf32772671b6ae55c

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://book.systemsapproach.org/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.5993.88 Safari/537.36

Response headers

Date
Mon, 23 Oct 2023 20:03:22 GMT
Content-Encoding
gzip
Via
1.1 book-sys-appr.cs.princeton.edu
Last-Modified
Wed, 27 Sep 2023 09:05:36 GMT
Server
Apache
ETag
"4c4a-606537e954eeb-gzip"
Vary
Accept-Encoding
Content-Type
application/javascript
Connection
Keep-Alive
Accept-Ranges
bytes
Keep-Alive
timeout=15, max=100
Content-Length
7492
doctools.js
book.systemsapproach.org/_static/ 		10 KB
4 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://book.systemsapproach.org/_static/doctools.js
Requested by
Host: book.systemsapproach.org
URL: https://book.systemsapproach.org/
Protocol
HTTP/1.1
Security
TLS 1.2, ECDHE_RSA, AES_256_GCM
Server
128.112.136.67 Princeton, United States, ASN88 (PRINCETON-AS, US),
Reverse DNS
Software
Apache /
Resource Hash
809310eb1c7560076ac9e0eb7ae647eb1fda8480e34c2bea1d570d53e190a2dd

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://book.systemsapproach.org/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.5993.88 Safari/537.36

Response headers

Date
Mon, 23 Oct 2023 20:03:22 GMT
Content-Encoding
gzip
Via
1.1 book-sys-appr.cs.princeton.edu
Last-Modified
Wed, 27 Sep 2023 09:05:35 GMT
Server
Apache
ETag
"261e-606537e92aee1-gzip"
Vary
Accept-Encoding
Content-Type
application/javascript
Connection
Keep-Alive
Accept-Ranges
bytes
Keep-Alive
timeout=15, max=100
Content-Length
3506
js
www.googletagmanager.com/gtag/ 		242 KB
85 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://www.googletagmanager.com/gtag/js?id=G-8NK2HCPFQ5
Requested by
Host: book.systemsapproach.org
URL: https://book.systemsapproach.org/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:830::2008 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
Google Tag Manager /
Resource Hash
5e080af3051856731d45e30b98c71a562b2527d271072c9e291beefbf7e6fcad
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains
X-Xss-Protection 0

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://book.systemsapproach.org/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.5993.88 Safari/537.36

Response headers

date
Mon, 23 Oct 2023 20:03:22 GMT
content-encoding
br
strict-transport-security
max-age=31536000; includeSubDomains
server
Google Tag Manager
vary
Accept-Encoding
content-type
application/javascript; charset=UTF-8
access-control-allow-origin
*
cache-control
private, max-age=900
access-control-allow-credentials
true
cross-origin-resource-policy
cross-origin
access-control-allow-headers
Cache-Control
content-length
86317
x-xss-protection
0
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
expires
Mon, 23 Oct 2023 20:03:22 GMT
theme.js
book.systemsapproach.org/_static/js/ 		5 KB
2 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://book.systemsapproach.org/_static/js/theme.js
Requested by
Host: book.systemsapproach.org
URL: https://book.systemsapproach.org/
Protocol
HTTP/1.1
Security
TLS 1.2, ECDHE_RSA, AES_256_GCM
Server
128.112.136.67 Princeton, United States, ASN88 (PRINCETON-AS, US),
Reverse DNS
Software
Apache /
Resource Hash
536ad2d746e944c5570cc15badaeccc3c0582a1b66e45511fe4edce32b6da510

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://book.systemsapproach.org/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.5993.88 Safari/537.36

Response headers

Date
Mon, 23 Oct 2023 20:03:22 GMT
Content-Encoding
gzip
Via
1.1 book-sys-appr.cs.princeton.edu
Last-Modified
Wed, 27 Sep 2023 09:05:36 GMT
Server
Apache
ETag
"139f-606537e95c1e5-gzip"
Vary
Accept-Encoding
Content-Type
application/javascript
Connection
Keep-Alive
Accept-Ranges
bytes
Keep-Alive
timeout=15, max=99
Content-Length
1795
SystemsApproachLogoURL.png
book.systemsapproach.org/_images/ 		132 KB
133 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://book.systemsapproach.org/_images/SystemsApproachLogoURL.png
Requested by
Host: book.systemsapproach.org
URL: https://book.systemsapproach.org/
Protocol
HTTP/1.1
Security
TLS 1.2, ECDHE_RSA, AES_256_GCM
Server
128.112.136.67 Princeton, United States, ASN88 (PRINCETON-AS, US),
Reverse DNS
Software
Apache /
Resource Hash
0872681cd6b773ddf5d3b815d008bd9822c03fd6783baa86484b808ea687827b

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://book.systemsapproach.org/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.5993.88 Safari/537.36

Response headers

Date
Mon, 23 Oct 2023 20:03:22 GMT
Via
1.1 book-sys-appr.cs.princeton.edu
Last-Modified
Wed, 27 Sep 2023 09:05:34 GMT
Server
Apache
ETag
"21189-606537e7f052c"
Content-Type
image/png
Connection
Keep-Alive
Accept-Ranges
bytes
Keep-Alive
timeout=15, max=99
Content-Length
135561
js
www.googletagmanager.com/gtag/ 		187 KB
68 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://www.googletagmanager.com/gtag/js?id=UA-187238494-4&l=dataLayer&cx=c
Requested by
Host: www.googletagmanager.com
URL: https://www.googletagmanager.com/gtag/js?id=G-8NK2HCPFQ5
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:830::2008 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
Google Tag Manager /
Resource Hash
4aef051c3e4af692655273600b254fad44f9fff0c2a000c84209561d3841a57e
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains
X-Xss-Protection 0

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://book.systemsapproach.org/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.5993.88 Safari/537.36

Response headers

date
Mon, 23 Oct 2023 20:03:23 GMT
content-encoding
br
strict-transport-security
max-age=31536000; includeSubDomains
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length
69218
x-xss-protection
0
last-modified
Mon, 23 Oct 2023 18:43:49 GMT
server
Google Tag Manager
vary
Accept-Encoding
content-type
application/javascript; charset=UTF-8
access-control-allow-origin
*
cache-control
private, max-age=900
access-control-allow-credentials
true
access-control-allow-headers
Cache-Control
expires
Mon, 23 Oct 2023 20:03:23 GMT
collect
region1.google-analytics.com/g/ 		0
260 B 		Ping
General
Check archive.org
Download Go to
Full URL
https://region1.google-analytics.com/g/collect?v=2&tid=G-8NK2HCPFQ5&gtm=45je3ai0&_p=444799447&cid=1925947008.1698091403&ul=en-us&sr=1600x1200&uaa=&uab=&uafvl=&uamb=0&uam=&uap=&uapv=&uaw=0&_s=1&sid=1698091403&sct=1&seg=0&dl=https%3A%2F%2Fbook.systemsapproach.org%2F&dt=Computer%20Networks%3A%20A%20Systems%20Approach%20%E2%80%94%20Computer%20Networks%3A%20A%20Systems%20Approach%20Version%206.2-dev%20documentation&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1
Requested by
Host: www.googletagmanager.com
URL: https://www.googletagmanager.com/gtag/js?id=G-8NK2HCPFQ5
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2001:4860:4802:34::36 , United States, ASN15169 (GOOGLE, US),
Reverse DNS
Software
Golfe2 /
Resource Hash
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://book.systemsapproach.org/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.5993.88 Safari/537.36

Response headers

pragma
no-cache
date
Mon, 23 Oct 2023 20:03:23 GMT
server
Golfe2
content-type
text/plain
access-control-allow-origin
https://book.systemsapproach.org
cache-control
no-cache, no-store, must-revalidate
access-control-allow-credentials
true
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length
0
expires
Fri, 01 Jan 1990 00:00:00 GMT
lato-normal.woff2
book.systemsapproach.org/_static/css/fonts/ 		178 KB
179 KB 		Font
General
Check archive.org
Download Go to
Full URL
https://book.systemsapproach.org/_static/css/fonts/lato-normal.woff2?bd03a2cc277bbbc338d464e679fe9942
Requested by
Host: book.systemsapproach.org
URL: https://book.systemsapproach.org/_static/css/theme.css
Protocol
HTTP/1.1
Security
TLS 1.2, ECDHE_RSA, AES_256_GCM
Server
128.112.136.67 Princeton, United States, ASN88 (PRINCETON-AS, US),
Reverse DNS
Software
Apache /
Resource Hash
983b0caf336e8542214fc17019a4fc5e0360864b92806ca14d55c1fc1c2c5a0f

Request headers

Referer
https://book.systemsapproach.org/_static/css/theme.css
Origin
https://book.systemsapproach.org
accept-language
de-DE,de;q=0.9
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.5993.88 Safari/537.36

Response headers

Date
Mon, 23 Oct 2023 20:03:23 GMT
Via
1.1 book-sys-appr.cs.princeton.edu
Last-Modified
Wed, 27 Sep 2023 09:05:35 GMT
Server
Apache
ETag
"2c9b4-606537e93babb"
Content-Type
font/woff2
Connection
Keep-Alive
Accept-Ranges
bytes
Keep-Alive
timeout=15, max=99
Content-Length
182708
fontawesome-webfont.woff2
book.systemsapproach.org/_static/css/fonts/ 		75 KB
76 KB 		Font
General
Check archive.org
Download Go to
Full URL
https://book.systemsapproach.org/_static/css/fonts/fontawesome-webfont.woff2?af7ae505a9eed503f8b8e6982036873e
Requested by
Host: book.systemsapproach.org
URL: https://book.systemsapproach.org/_static/css/theme.css
Protocol
HTTP/1.1
Security
TLS 1.2, ECDHE_RSA, AES_256_GCM
Server
128.112.136.67 Princeton, United States, ASN88 (PRINCETON-AS, US),
Reverse DNS
Software
Apache /
Resource Hash
2adefcbc041e7d18fcf2d417879dc5a09997aa64d675b7a3c4b6ce33da13f3fe

Request headers

Referer
https://book.systemsapproach.org/_static/css/theme.css
Origin
https://book.systemsapproach.org
accept-language
de-DE,de;q=0.9
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.5993.88 Safari/537.36

Response headers

Date
Mon, 23 Oct 2023 20:03:23 GMT
Via
1.1 book-sys-appr.cs.princeton.edu
Last-Modified
Wed, 27 Sep 2023 09:05:35 GMT
Server
Apache
ETag
"12d68-606537e94ab5d"
Content-Type
font/woff2
Connection
Keep-Alive
Accept-Ranges
bytes
Keep-Alive
timeout=15, max=99
Content-Length
77160
lato-bold.woff2
book.systemsapproach.org/_static/css/fonts/ 		181 KB
181 KB 		Font
General
Check archive.org
Download Go to
Full URL
https://book.systemsapproach.org/_static/css/fonts/lato-bold.woff2?cccb897485813c7c256901dbca54ecf2
Requested by
Host: book.systemsapproach.org
URL: https://book.systemsapproach.org/_static/css/theme.css
Protocol
HTTP/1.1
Security
TLS 1.2, ECDHE_RSA, AES_256_GCM
Server
128.112.136.67 Princeton, United States, ASN88 (PRINCETON-AS, US),
Reverse DNS
Software
Apache /
Resource Hash
ae88fc0d7a961832f809527d30bd3983a6866d42f66a56ade23f543681594db6

Request headers

Referer
https://book.systemsapproach.org/_static/css/theme.css
Origin
https://book.systemsapproach.org
accept-language
de-DE,de;q=0.9
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.5993.88 Safari/537.36

Response headers

Date
Mon, 23 Oct 2023 20:03:23 GMT
Via
1.1 book-sys-appr.cs.princeton.edu
Last-Modified
Wed, 27 Sep 2023 09:05:35 GMT
Server
Apache
ETag
"2d250-606537e9334de"
Content-Type
font/woff2
Connection
Keep-Alive
Accept-Ranges
bytes
Keep-Alive
timeout=15, max=98
Content-Length
184912
lato-bold-italic.woff2
book.systemsapproach.org/_static/css/fonts/ 		189 KB
189 KB 		Font
General
Check archive.org
Download Go to
Full URL
https://book.systemsapproach.org/_static/css/fonts/lato-bold-italic.woff2?0b6bb6725576b072c5d0b02ecdd1900d
Requested by
Host: book.systemsapproach.org
URL: https://book.systemsapproach.org/_static/css/theme.css
Protocol
HTTP/1.1
Security
TLS 1.2, ECDHE_RSA, AES_256_GCM
Server
128.112.136.67 Princeton, United States, ASN88 (PRINCETON-AS, US),
Reverse DNS
Software
Apache /
Resource Hash
c0916a33340d063f7b05679e08031e729d1888444706f04804705da5966d895d

Request headers

Referer
https://book.systemsapproach.org/_static/css/theme.css
Origin
https://book.systemsapproach.org
accept-language
de-DE,de;q=0.9
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.5993.88 Safari/537.36

Response headers

Date
Mon, 23 Oct 2023 20:03:23 GMT
Via
1.1 book-sys-appr.cs.princeton.edu
Last-Modified
Wed, 27 Sep 2023 09:05:35 GMT
Server
Apache
ETag
"2f31c-606537e94645e"
Content-Type
font/woff2
Connection
Keep-Alive
Accept-Ranges
bytes
Keep-Alive
timeout=15, max=99
Content-Length
193308
Roboto-Slab-Bold.woff2
book.systemsapproach.org/_static/css/fonts/ 		66 KB
66 KB 		Font
General
Check archive.org
Download Go to
Full URL
https://book.systemsapproach.org/_static/css/fonts/Roboto-Slab-Bold.woff2?9984f4a9bda09be08e83f2506954adbe
Requested by
Host: book.systemsapproach.org
URL: https://book.systemsapproach.org/_static/css/theme.css
Protocol
HTTP/1.1
Security
TLS 1.2, ECDHE_RSA, AES_256_GCM
Server
128.112.136.67 Princeton, United States, ASN88 (PRINCETON-AS, US),
Reverse DNS
Software
Apache /
Resource Hash
1a0c024dd1a267c52d5575469ffe8570d1e84164de7d393cf3414bafd17d7a0c

Request headers

Referer
https://book.systemsapproach.org/_static/css/theme.css
Origin
https://book.systemsapproach.org
accept-language
de-DE,de;q=0.9
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.5993.88 Safari/537.36

Response headers

Date
Mon, 23 Oct 2023 20:03:23 GMT
Via
1.1 book-sys-appr.cs.princeton.edu
Last-Modified
Wed, 27 Sep 2023 09:05:35 GMT
Server
Apache
ETag
"106f0-606537e9479d8"
Content-Type
font/woff2
Connection
Keep-Alive
Accept-Ranges
bytes
Keep-Alive
timeout=15, max=97
Content-Length
67312
js
www.googletagmanager.com/gtag/ 		224 KB
79 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://www.googletagmanager.com/gtag/js?id=G-0PMT2XYDEV&l=dataLayer&cx=c
Requested by
Host: www.googletagmanager.com
URL: https://www.googletagmanager.com/gtag/js?id=UA-187238494-4&l=dataLayer&cx=c
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
2a00:1450:4001:830::2008 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
Google Tag Manager /
Resource Hash
92ddac309dcce964bee69260a6bf89a2a52417291be01462370ac79c294e1150
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains
X-Xss-Protection 0

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://book.systemsapproach.org/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.5993.88 Safari/537.36

Response headers

date
Mon, 23 Oct 2023 20:03:23 GMT
content-encoding
br
strict-transport-security
max-age=31536000; includeSubDomains
server
Google Tag Manager
vary
Accept-Encoding
content-type
application/javascript; charset=UTF-8
access-control-allow-origin
*
cache-control
private, max-age=900
access-control-allow-credentials
true
cross-origin-resource-policy
cross-origin
access-control-allow-headers
Cache-Control
content-length
81271
x-xss-protection
0
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
expires
Mon, 23 Oct 2023 20:03:23 GMT
analytics.js
www.google-analytics.com/ 		52 KB
21 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://www.google-analytics.com/analytics.js
Requested by
Host: www.googletagmanager.com
URL: https://www.googletagmanager.com/gtag/js?id=UA-187238494-4&l=dataLayer&cx=c
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:830::200e Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
Golfe2 /
Resource Hash
de36e50194320a7d3ef1ace9bd34a875a8bd458b253c061979dd628e9bf49afd
Security Headers
Name Value
Strict-Transport-Security max-age=10886400; includeSubDomains; preload
X-Content-Type-Options nosniff

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://book.systemsapproach.org/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.5993.88 Safari/537.36

Response headers

strict-transport-security
max-age=10886400; includeSubDomains; preload
content-encoding
gzip
x-content-type-options
nosniff
date
Mon, 23 Oct 2023 19:49:42 GMT
last-modified
Mon, 12 Jun 2023 18:23:07 GMT
server
Golfe2
age
821
vary
Accept-Encoding
content-type
text/javascript
cache-control
public, max-age=7200
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length
20994
expires
Mon, 23 Oct 2023 21:49:42 GMT
collect
region1.google-analytics.com/g/ 		0
54 B 		Ping
General
Check archive.org
Download Go to
Full URL
https://region1.google-analytics.com/g/collect?v=2&tid=G-0PMT2XYDEV&gtm=45je3ai0&_p=444799447&cid=1925947008.1698091403&ul=en-us&sr=1600x1200&ir=1&uaa=&uab=&uafvl=&uamb=0&uam=&uap=&uapv=&uaw=0&_eu=EAAI&_s=1&sid=1698091403&sct=1&seg=0&dl=https%3A%2F%2Fbook.systemsapproach.org%2F&dt=Computer%20Networks%3A%20A%20Systems%20Approach%20%E2%80%94%20Computer%20Networks%3A%20A%20Systems%20Approach%20Version%206.2-dev%20documentation&en=page_view&_fv=1&_ss=1
Requested by
Host: www.googletagmanager.com
URL: https://www.googletagmanager.com/gtag/js?id=G-0PMT2XYDEV&l=dataLayer&cx=c
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2001:4860:4802:34::36 , United States, ASN15169 (GOOGLE, US),
Reverse DNS
Software
Golfe2 /
Resource Hash
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://book.systemsapproach.org/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.5993.88 Safari/537.36

Response headers

pragma
no-cache
date
Mon, 23 Oct 2023 20:03:23 GMT
server
Golfe2
content-type
text/plain
access-control-allow-origin
https://book.systemsapproach.org
cache-control
no-cache, no-store, must-revalidate
access-control-allow-credentials
true
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length
0
expires
Fri, 01 Jan 1990 00:00:00 GMT
collect
www.google-analytics.com/j/ 		1 B
212 B 		XHR
General
Check archive.org
Download Go to
Full URL
https://www.google-analytics.com/j/collect?v=1&_v=j101&a=444799447&t=pageview&_s=1&dl=https%3A%2F%2Fbook.systemsapproach.org%2F&ul=en-us&de=UTF-8&dt=Computer%20Networks%3A%20A%20Systems%20Approach%20%E2%80%94%20Computer%20Networks%3A%20A%20Systems%20Approach%20Version%206.2-dev%20documentation&sd=24-bit&sr=1600x1200&vp=1600x1200&je=0&_u=YADAAUABAAAAACAAI~&jid=577309408&gjid=1049030155&cid=1925947008.1698091403&tid=UA-187238494-4&_gid=495823720.1698091403&_r=1&gtm=457e3ai0&jsscut=1&z=1073672842
Requested by
Host: www.google-analytics.com
URL: https://www.google-analytics.com/analytics.js
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:830::200e Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
Golfe2 /
Resource Hash
6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b
Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

Referer
https://book.systemsapproach.org/
accept-language
de-DE,de;q=0.9
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.5993.88 Safari/537.36
Content-Type
text/plain

Response headers

pragma
no-cache
date
Mon, 23 Oct 2023 20:03:23 GMT
x-content-type-options
nosniff
last-modified
Sun, 17 May 1998 03:00:00 GMT
server
Golfe2
content-type
text/plain
access-control-allow-origin
https://book.systemsapproach.org
cache-control
no-cache, no-store, must-revalidate
access-control-allow-credentials
true
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length
1
expires
Fri, 01 Jan 1990 00:00:00 GMT
collect
region1.google-analytics.com/g/ 		0
17 B 		Ping
General
Check archive.org
Download Go to
Full URL
https://region1.google-analytics.com/g/collect?v=2&tid=G-8NK2HCPFQ5&gtm=45je3ai0&_p=444799447&cid=1925947008.1698091403&ul=en-us&sr=1600x1200&uaa=&uab=&uafvl=&uamb=0&uam=&uap=&uapv=&uaw=0&_eu=AEA&_s=2&sid=1698091403&sct=1&seg=0&dl=https%3A%2F%2Fbook.systemsapproach.org%2F&dt=Computer%20Networks%3A%20A%20Systems%20Approach%20%E2%80%94%20Computer%20Networks%3A%20A%20Systems%20Approach%20Version%206.2-dev%20documentation&en=scroll&epn.percent_scrolled=90&_et=8
Requested by
Host: www.googletagmanager.com
URL: https://www.googletagmanager.com/gtag/js?id=G-8NK2HCPFQ5
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
2001:4860:4802:34::36 , United States, ASN15169 (GOOGLE, US),
Reverse DNS
Software
Golfe2 /
Resource Hash
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://book.systemsapproach.org/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.5993.88 Safari/537.36

Response headers

pragma
no-cache
date
Mon, 23 Oct 2023 20:03:28 GMT
server
Golfe2
content-type
text/plain
access-control-allow-origin
https://book.systemsapproach.org
cache-control
no-cache, no-store, must-revalidate
access-control-allow-credentials
true
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length
0
expires
Fri, 01 Jan 1990 00:00:00 GMT

Verdicts & Comments Add Verdict or Comment

17 JavaScript Global Variables

These are the non-standard "global" variables defined on the window object. These can be helpful in identifying possible client-side frameworks and code.

object| DOCUMENTATION_OPTIONS function| $ function| jQuery function| _ object| Documentation function| $u object| google_tag_manager object| google_tag_data object| dataLayer function| gtag function| onYouTubeIframeAPIReady object| SphinxRtdTheme object| gaGlobal string| GoogleAnalyticsObject function| ga object| gaplugins object| gaData

5 Cookies

Domain/Path Name / Value
.systemsapproach.org/ Name: _ga_8NK2HCPFQ5
Value: GS1.1.1698091403.1.0.1698091403.0.0.0
.systemsapproach.org/ Name: _ga_0PMT2XYDEV
Value: GS1.1.1698091403.1.0.1698091403.0.0.0
.systemsapproach.org/ Name: _ga
Value: GA1.2.1925947008.1698091403
.systemsapproach.org/ Name: _gid
Value: GA1.2.495823720.1698091403
.systemsapproach.org/ Name: _gat_gtag_UA_187238494_4
Value: 1

Indicators

This is a term in the security industry to describe indicators such as IPs, Domains, Hashes, etc. This does not imply that any of these indicate malicious activity.

book.systemsapproach.org
region1.google-analytics.com
www.google-analytics.com
www.googletagmanager.com
128.112.136.67
2001:4860:4802:34::36
2a00:1450:4001:830::2008
2a00:1450:4001:830::200e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