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Networking
HTTP
DNS
Firewall
IP
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Cheatsheet
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Networking
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Networking
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HTTP
Query String
Chunked Transfer Encoding
Codes
Examples
Methods
GET
Difference Between POST and PUT
Persistent Connections
keepalive in Linux
Document Caching
Authentication
Basic Auth
Digest
Cookie Based
Certificate Based
HTTPS
Trusting a Web Site
TLS/SSL
Server Setup
Other Uses
nginx
engineX
Permissions
Setting up Basic Auth
Setting up Digest Auth
Others
HTTPie - Command Line HTTP Client
DNS
Overview
Typical Name Resolution
Protocol
DNS Database
Example named.hosts file for the Physics Department
Reverse Lookups
DNS Caches vs. DNS Servers vs. DNS Resolvers
Authoritative vs Non-authoritative Responses
Zone Tranfers
Anycast DNS
DNS Security
Examples
Query All Records using dig
Firewall
First Generation: Packet Filters
Second Generation: Stateful Filters
Third Generation: application layer
IP
Path MTU Discovery (PMUTD)
tcpdump
Flags
Examples
Capturing ARP Traffic
Capturing Traffic on Localhost
Capturing GMail Traffic
Dropped Packets by the Kernel
Capturing TCP SYN Packets
Capture Outgoing SSH Traffic
Get Time Delta Between Request/Response
Capturing WiFi Packets
Cheatsheet
Finding Duplicate IP Addresses on the Network
Capturing cupsd Traffic
Troubleshooting
Identifying and Solving Performance Issues
Common Server Problems
Common AJAX Problems
Common App Engine Problems
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