Port Numbers

Question 1

What port number is SRV _sip service?

Answer 1

Port 443 Protocol _tis, Service _sip
Port 5061, Protocol _tcp, Service, _sipfederations
SIP refers to skype for business.

Question 2

What does port 443 enable you to change (firewall considerations)?

Answer 2

AD FS
O365 portal
Office outlook
Outlook on the web
SharePoint online
SFB

Question 3

What does port 80 and 443 enable you to change (firewall considerations)?

Answer 3

Azure AD connect
Exchange tools
Migrations tools

Question 4

What are some of the main exchange online ports?

Answer 4

25- mail routing
587- SMTP relay
143/99 - IMAP4 migration tool
995- POP3

Question 5

What are some of the main SFB ports?

Answer 5

TCP/UDP 50000/59999 - Audio, video, sharing
UDP 3478 - Outbound audio and video
TCP 5223 - mobile push notifications

Question 6

O365 ports for firewall hardening using FQDN?

Answer 6

TCP 443
FQDN: .office365.com, portal.office.com
TennantName.onmicrosoft.com
protection.office.com

Question 7

Azure AD connect ports for firewall hardening using FQDN?

Answer 7

80 and 443

FQDN: Microsoftonline.com

Question 8

Exchange online ports for firewall hardening using FQDN?

Answer 8

587
Smtp.office365.com
TCP 80 & 443
Outlook.com outlook.office365.com

Question 9

Imap?

Answer 9

TCP 143 & 993

Question 10

POP3

Answer 10

TCO 995

Question 11

SFB

Answer 11

TCP 443

Question 12

Teams

Answer 12

TCP 80 & 443

Question 13

Sharepoint Online

Answer 13

TCP 80 & 443

Question 14

What port is used for mail routing?

Answer 14

25

Question 15

What port is used for SMTP relay?

Answer 15

587

Question 16

What port is IMAP4?

Answer 16

143/99

Question 17

What port is POP3?

Answer 17

995