Log for 電訊台
现在这个时间段，一定会有很多机场力推V2Ray (这是一个套装组合，里面包含自研的VMESS格式)。可是在V2Ray中，仍然在机场端（运营者）是有办法修改代码后，做到浏览纪录的侧录、封包的抓取（定期做DPI）
相比SSR，不是VMESS不好识别，而是这是一个故意放出来的协议
常见机场分几种
1. 盗刷额度，架设Azure / Google Cloud，这种通常经营者本身没什么技术水平，都是网上找安装包，也不懂得深入代码研究，这种容易被利用（安装包渗透）
2. 搭建IPLC线路，我们都要知道，专线一分钱一分货，几百元一年，还大流量，想想有可能吗？ 就算合租，ISP按照95值计费，以机场的使用者习惯，合租的价格也是相当高昂，那背后还有什么可能性，想想都知道
3. 自建BGP（真正的自建，包含拥有自己ASN跟IP subnets），但为了墙内速度，必须跟CU / CT / CM，至少一间做IP Transit，这里价格也是相当昂贵，以我司 经验来看，光是香港做transit，在有保底情况下，美金50 per Mbps，可以burst，这是什么概念，家用网大概现在都100Mbps以上，机场用户众多，为了使用体验，得签多少的速率 保底合同？ 这还不包含机房费用
如果背后真的没什么利益可图，怎么算都不划算
传统来看，仍然最能保障传输安全，但也最容易被识别的，就是IPSec / OpenVPN，这些标准协定，这也是实话，只能通过机场自身努力，控制流量，降低怀疑。
🥺🥺🥺
V2Ray是钓鱼🎣的不安全。（但是好像很多人都用这个，没懂？？？） 如有技术性反驳请及时联系 @Rosemeichou
相比SSR，不是VMESS不好识别，而是这是一个故意放出来的协议
常见机场分几种
1. 盗刷额度，架设Azure / Google Cloud，这种通常经营者本身没什么技术水平，都是网上找安装包，也不懂得深入代码研究，这种容易被利用（安装包渗透）
2. 搭建IPLC线路，我们都要知道，专线一分钱一分货，几百元一年，还大流量，想想有可能吗？ 就算合租，ISP按照95值计费，以机场的使用者习惯，合租的价格也是相当高昂，那背后还有什么可能性，想想都知道
3. 自建BGP（真正的自建，包含拥有自己ASN跟IP subnets），但为了墙内速度，必须跟CU / CT / CM，至少一间做IP Transit，这里价格也是相当昂贵，以我司 经验来看，光是香港做transit，在有保底情况下，美金50 per Mbps，可以burst，这是什么概念，家用网大概现在都100Mbps以上，机场用户众多，为了使用体验，得签多少的速率 保底合同？ 这还不包含机房费用
如果背后真的没什么利益可图，怎么算都不划算
传统来看，仍然最能保障传输安全，但也最容易被识别的，就是IPSec / OpenVPN，这些标准协定，这也是实话，只能通过机场自身努力，控制流量，降低怀疑。
🥺🥺🥺
V2Ray是钓鱼🎣的不安全。（但是好像很多人都用这个，没懂？？？） 如有技术性反驳请及时联系 @Rosemeichou
2.10.pdf 2.4.pdf 2.9.pdf 4.3.1.pdf 4.3.6.pdf 4.4.2.pdf 4.4.7.pdf 4.5.3.pdf 4.5.8.pdf 5.3.4.pdf 5.4.5.pdf 6.2.3.pdf 7.10.pdf 7.5.pdf Catalog_2.txt 2.11.pdf 2.5.pdf 4.1.1.pdf 4.3.2.pdf 4.3.7.pdf 4.4.3.pdf 4.4.8.pdf 4.5.4.pdf 4.6.pdf 5.4.1.pdf 5.4.6.pdf 6.2.4.pdf 7.1.pdf 7.6.pdf Catalog.txt 2.1.pdf 2.6.pdf 4.1.2.pdf 4.3.3.pdf 4.3.8.pdf 4.4.4.pdf 4.4.9.pdf 4.5.5.pdf 5.3.1.pdf 5.4.2.pdf 6.1.5.pdf 6.2.5.pdf 7.2.pdf 7.7.pdf Catalog.xlsx 2.2.pdf 2.7.pdf 4.1.3.pdf 4.3.4.pdf 4.3.9.pdf 4.4.5.pdf 4.5.1.pdf 4.5.6.pdf 5.3.2.pdf 5.4.3.pdf 6.2.1.pdf 6.2.6.pdf 7.3.pdf 7.8.pdf 2.3.pdf 2.8.pdf 4.3.10.pdf 4.3.5.pdf 4.4.1.pdf 4.4.6.pdf 4.5.2.pdf 4.5.7.pdf 5.3.3.pdf 5.4.4.pdf 6.2.2.pdf 6.2.7.pdf 7.4.pdf 7.9.pdf
Unit 1: Introduction
How to study for CCNA
How to study Networking
How to build a CCNA Lab
What is Networking
Unit 2: Network Fundamentals
Introduction to the OSI Model
Introduction to IPv4 (Internet Protocol)
IPv4 Packet Header
Address Resolution Protocol (ARP)
Introduction to TCP and UDP
TCP Header
TCP Window Size Scaling
Introduction to ICMP
Introduction to DNS
Introduction to Cisco Command Line Interface (CLI)
User mode and Privileged mode
Unit 3: Network Access
3.1 LAN
Introduction to LANs
Introduction to Ethernet
Collision Domains
Broadcast Domains
How a switch learns MAC addresses
Power over Ethernet (PoE)
Cisco Campus Network Design
Network Topologies
Troubleshooting Interfaces
3.2 VLANs and Trunks
Introduction to VLANs
How to configure VLANs
VLAN Trunking Protocol (VTP)
Introduction to 802.1Q
How to configure a Trunk
Dynamic Trunking Protocol (DTP)
802.1Q Native VLAN
Introduction to Voice VLAN
Etherchannels
L3 Etherchannel
3.3 Spanning-Tree
Introduction to Spanning-Tree
Per VLAN Spanning-Tree
Spanning-Tree Port States
Spanning-Tree Cost Calculation
Spanning-Tree Portfast
Rapid PVST
Rapid PVST Configuration
3.4 Wireless
Introduction to Wireless Networks
Introduction to Wireless LANs
Wireless LAN 802.11 Service Sets
Introduction to Wireless Security
Wireless Authentication Methods
Wireless Encryption and Integrity
Wi-Fi Protected Access (WPA)
Cisco Wireless Network Architectures
Cisco WLC Deployment Models
Cisco Wireless AP Modes
Cisco Wireless LAN Controller (WLC) Basic Configuration
Cisco WLC WPA2 PSK Authentication
Unit 4: IP Connectivity
4.1 Introduction
Introduction to Routers and Routing
Cisco IOS Router Basic Configuration
Introduction to Wide Area Networks (WAN)
4.2 IPv4 Subnetting
Introduction to Subnetting
Basics of Binary Numbers
Subnetting in Binary
Subnetting in Decimal (Fast Method)
Classless InterDomain Routing (CIDR)
Variable Length Subnet Mask (VLSM)
Route Summarization
Hexadecimal to Binary and Decimal Conversion
Create a Subnetting Cheat Sheet
4.3 IPv6
Introduction to IPv6
Shortening IPv6 Addresses
How to find IPv6 Prefix
IPv6 Address Types
IPv6 Address Assignment Example
IPv6 EUI-64
IPv6 Summarization
IPv6 Solicited Node Multicast Address
IPv6 Neighbor Discovery Protocol (NDP)
IPv6 Stateless Autoconfiguration
4.4 Routing
Default Gateway
Static Routing
IPv6 Static Route
IP Routing Explained
Router on a Stick
InterVLAN Routing
Administrative Distance
Floating Static Route
Introduction to Route Summarization
4.5 OSPF
Introduction to OSPF
OSPF Configuration
OSPF Packets and Neighbor Discovery
OSPF Reference Bandwidth
OSPF Router ID
OSPF DR/BDR Election
OSPF Passive Interface
OSPF Hello and Dead Interval
4.6 Gateway Redundancy
Introduction to Gateway Redundancy
Unit 5: IP Services
5.1 DHCP
Introduction to DHCP
DHCP Server Configuration
DHCP Relay Agent
DHCP Client
DHCP Server IPv6 Configuration
5.2 SNMP
Introduction to SNMP
SNMPv2
SNMPv3
5.3 NAT
Introduction to NAT and PAT
NAT Static
NAT Dynamic
Port Address Translation (PAT)
5.4 Quality of Service (QoS)
Introduction to Quality of Service (QoS)
IP Precedence and DSCP Values
Classification
Marking
Shaping
Policing
Unit 6: Security Fundamentals
6.1 Access-Lists
Introduction to Access-Lists
Wildcard Bits
Standard Access-List
Extended Access-List
Time-based Access-List
6.2 Misc
Port-Security
AAA and 802.1X
AAA User Authentication
AAA Admin Authentication
DHCP Snooping
Introduction to Firewalls
Introduction to VPNs
Unit 7: Network Management
Introduction to CDP
Introduction to LLDP
Telnet Server and Client
SSH Server and Client
Introduction to NTP
Introduction to Syslog
Configuration Register
Password Recovery on Cisco IOS
Cisco IOS Filesystem
Upgrade Cisco IOS Image
Unit 8: Automation and Programmability
Device Programmability
REST API
Data Models and Structures
Configuration Management Tools and Version Control Systems
Introduction to Software Defined Networking (SDN)
Spine and Leaf Architecture
Unit 9: Cloud Computing
Virtual Machines and Containers
Introduction to Cloud Computing
Cloud Connectivity