Messer Notes 3 Flashcards
EUI
Extended unique Identifier
64 bit
adding mac address as ipv6
Dual-stack routing
router can use both IPv4 and IPv6 at the same time
NS
neighbor Solicitation
Sent as a multicast
Who has this MAC address
NA
neighbor advertisement
return from a NS
I match the MAC address of the NS
SLAAC
stateless address Autoconfiguration
automatically configure an IP address without a DHCP server
DAD
duplicate address detection
active on IPv6 to avoid duplicate address
RA
router advertisement
response to show a device is a router in IPv6
TCP 23
Telnet
login to device remotely
unsecure/in the clear communication
TCP 22
SSH-Secure Shell
secure
UDP 53
DNS Domain Name System
Converts names to IP addresses
large transfers use TCP 53
TCP 25/587
SMTP simple mail transfer protocol
25 in the clear
587 secure using TLS encyipton
TCP 110
POP3
basic mail transfer functionality
TCP 143/993
IMAP4- Internet Message Access Protocol
includes management option deleting mail
993 TLS encryption
tcp 22
SFTP Secure file transfer protocol
encrypted communication of files
more features
tcp 20/21
FTP file transfer protocol
20 active mode
21 control
udp 69
TFTP trivial File Transfer Protocol
simple file transfer
udp 67/68
DHCP
requires DHCP server
DHCP pool
available ip address for assignment in a ip network
DHCP reservation
assign a address to a mac address
tcp 80
http
tcp 443
https
udp 161
SNMP simple network management protocol different version v1 in the clear transfer v2 bulk in the clear v3 a secure standard gather network statistics
SNMP traps
alerts and notification when something happens
udp 162
udp 514
Syslog
standard for message logging
usually a central log collector
tcp 3389
RDP
udp 123
NTP
tcp 5060/5061
SIP
VoIP signaling
setup and manage Voip sessions
tcp 445
SMB server message block
file sharing print sharing
tcp 389
LDAP
store and retrieve information in a network directory
tcp 636
a non-standard secure ldap
tcp 1433
SQL
Microsoft Structure Query Language
GRE
generic routing encapsulation
encapsulate traffic inside of IP
direct connection
no built in encryption
VPN Concentrator
encryption/decryption access device
often integrated into a firewall
software/hardware solution
client software
IPSec
internet Protocol Security
Security for OSI layer 3
AH
Authentication Header
used in IPsec
ESP
Encapsulation Security Payload
used in Ipsec
255.255.255.255
network broadcast address
DHCP relay/IP helper
router configuration that sees DHCP request and forwards the message to the DHCP server
T1 timer
check in with DHCP server to renew the ip address
T2 timer
if DHCP server is down try rebinding with any DHCP server
FQDN
Fully Qualified Domain Name
DNS hierarchy
Reverse DNS
provide ip address to get the FQDN website name
RR
resource records
database of DNS
SOA
start of authority
describes the DNS zone details
A/AAAA
address record
DNS record that holds IPv4 addresses
CNAME
A name is an alias of another, canonical name
one physical server multiple services
SRV
Find a specific service
where is Voip
MX
determines the host name for the mail server
this isn’t a ip address but a name
NS
name server list
list the name of server
PTR
pointer record
the reverse of the A or AAAA record
reverse look up
TXT
Text record
SPF protocol- prevent spoofing, mail servers check that incoming mail really did come from an authorized host
DKIM- Domain Keys Identified Mail, digitally sign your outgoing mail
