Stuff I want to practice Daily Flashcards
shows the route the packets of data travels through the network and can help identify locations where network errors are occuring
Traceroute(Cisco)
tracert(windows)
file protocol ports
File Protocols
FTP 20/21
TFTP 69
SFTP 22
SMB 445
remote connection ports
Remote Connections
SSH 22
Telnet 23
RDP 3389
email protocols
Email
SMTP 25
POPv3 110
IMAP 143
SMTPS 587 (TLS)
IMAPS 993 (SSL)
POP3S 995 (SSL)
WEB protocols
Websites
HTTP 80
HTTPS 443
SQL Protocols
SQL related
SQL Server 1433
SQLNet 1521
MySQL 3306
Network Service Protocols
Network Services
DHCP 67/68
DNS 53
NTP 123
SNMP 161/162
LDAP 389
LDAPS 636
Syslog 514
SIP 5060/50611
IP Protocol types
IP protocol types
Internet Control Message Protocol (ICMP)
TCP
UDP
Generic Routing Encapsulation (GRE)
Internet Protocol Security (IPSec)
AH
ESP
wireless standards
Cat Standards
Fiber Standards
searches for open ports
Port Scanners
a step above SNMP and also looks at the conversations taking place on your network
Netflow analyzers
linux/unix/macs version of ipconfig
ifconfig
uses a broadcast to find the ip address associated with a MAC address
ARP(Addresss Resolution Protocol)
which level of the OSI model uses MAC addresses to identify other computers on the network
-physical
-data link
-network
-transport
data link:
data encapsulation process
Data, segment, packet, frames, bits
ip is on which layer of the osi model
network
tcp is located on which layer
transport
which layer of the osi model adds a footer and a header
data link
allows or denies packets into the network based on the source and destination IP address or the traffic type (TCP, UDP, ICMP, etc.)
A stateless packet inspection firewall
monitors the active sessions and connections on a network. The process of stateful inspection determines which network packets should be allowed through the firewall by utilizing the information it gathered regarding active connections as well as the existing ACL rules.
A stateful packet inspection firewall
is a cross-platform, open-source tool used to scan IP addresses and ports on a target network, and to detect running services, applications, or operating systems on that network’s clients, servers, and devices
Nmap, or Network Mapper,
is one element of an IEEE specification (802.3ad) that provides guidance on the practice of link aggregation for data connections
Link Aggregation Control Protocol or LACP
The Spanning Tree Protocol (STP) is a network protocol that builds a loop-free logical topology for Ethernet networks to prevent bridge loops and the broadcast storms that results from them
STP is defined in the IEEE 802.1d standard
Power over Ethernet (POE) is a technology that lets network cables carry electrical power
802.3af
actual measure of how much data is successfully transferred from the source to a destination
Throughput
the maximum rate of data transfer across a given network
Bandwidth
four layers of the tcp/ip
layer 4 - app
layer 3 transport
layer 2 internet
layer 1 network interface layer (link layer)
icmp osi layer
network
AP’s can perform filtering at which layers of the osi?
2,3,4
a packet filtering firewall performs at which layers of the osi
network and data link
is a network layer protocol used to obtain an IP address for a known MAC (Media Access Control) address.
RARP (Reverse Address Resolution Protocol)
