- What port is 389 used for?
- Is port 80 TCP or UDP?
- What is the difference between port 80 and 443?
- What is the purpose of port 443?
- What port is 1720?
- What port is LDAP?
- What is port 8080 typically used for?
- Is port 443 safe to open?
- Is port 139 required for SMB?
- What is port 445 commonly used for?
- What ports does Kerberos use?
- Where is NTLM authentication used?
- Is Kerberos UDP or TCP?
- Should I open port 139?
- How do I know if NTLM is used?
- Is LDAP 389 secure?
- What is port 110 used for?
- What is port 139 commonly used for?
- Why do we need port numbers?
- Why is NTLM not secure?
- What is the difference between basic authentication and NTLM?
What port is 389 used for?
GRC | Port Authority, for Internet Port 389.
Description: LDAP (which is what people call it) is a modern and popular Internet directory access protocol used by many systems and services.
Most Windows users will encounter it because Microsoft’s NetMeeting uses and opens the LDAP port 389 while it is running..
Is port 80 TCP or UDP?
Service Name and Transport Protocol Port Number RegistryService NamePort NumberTransport Protocolhttp80udpwww80tcpwww80udpwww-http80tcp75 more rows•Jan 6, 2021
What is the difference between port 80 and 443?
Port 80 and 443 are ports generally associated with “the Internet”. Port 443/HTTPS is the HTTP protocol over TLS/SSL. Port 80/HTTP is the World Wide Web. … If web servers are being hosted, connections will be allowed inbound to those web servers.
What is the purpose of port 443?
You can understand Port 443 as a web browsing port used to secure web browser communication or HTTPS services. It will provide encryption and transport over secure ports. Thus, the data you transfer across such connections are highly resistant to third-party eavesdropping and interruption.
What port is 1720?
Call setup and media portsUDP port 1719Gatekeeper registration.TCP port 1720H.323 call negotiation.UDP port 5060SIP call negotiation.TCP port 5060SIP call negotiation if TCP signaling is enabled for SIP calls.2 more rows
What port is LDAP?
389636LDAPSLightweight Directory Access Protocol/Standard port
What is port 8080 typically used for?
Port 8080 Details. Common alternative HTTP port used for web traffic. See also TCP ports 80,81,8443. It can also be used for HTTP Web Proxies.
Is port 443 safe to open?
1 Answer. Port 443 is the default port for HTTPS communication using SSL/TLS. … In short, just because you can expose only port 443 to the world and accept only properly-negotiated TLS connections through it does not necessarily mean your system is secure.
Is port 139 required for SMB?
SMB has always been a network file sharing protocol. As such, SMB requires network ports on a computer or server to enable communication to other systems. SMB uses either IP port 139 or 445. … NetBIOS is an older transport layer that allows Windows computers to talk to each other on the same network.
What is port 445 commonly used for?
TCP port 445 is used for direct TCP/IP MS Networking access without the need for a NetBIOS layer. This service is only implemented in the more recent verions Windows starting with Windows 2000 and Windows XP. The SMB (Server Message Block) protocol is used among other things for file sharing in Windows NT/2K/XP.
What ports does Kerberos use?
Kerberos protocol messages are protected against eavesdropping and replay attacks. Kerberos builds on symmetric key cryptography and requires a trusted third party, and optionally may use public-key cryptography during certain phases of authentication. Kerberos uses UDP port 88 by default.
Where is NTLM authentication used?
Windows Challenge/Response (NTLM) is the authentication protocol used on networks that include systems running the Windows operating system and on stand-alone systems. The Microsoft Kerberos security package adds greater security than NTLM to systems on a network.
Is Kerberos UDP or TCP?
Kerberos is primarily a UDP protocol, although it falls back to TCP for large Kerberos tickets. This may require special configuration on firewalls to allow the UDP response from the Kerberos server (KDC). Kerberos clients need to send UDP and TCP packets on port 88 and receive replies from the Kerberos servers.
Should I open port 139?
If you are on Windows-based network that is running NetBios, it is perfectly normal to have port 139 open in order to facilitate that protocol. If you are not on a network using NetBios, there is no reason to have that port open.
How do I know if NTLM is used?
If you’re using Kerberos, then you’ll see the activity in the event log. If you are passing your credentials and you don’t see any Kerberos activity in the event log, then you’re using NTLM.
Is LDAP 389 secure?
The default port for LDAP is port 389, but LDAPS uses port 636 and establishes TLS/SSL upon connecting with a client. 2.) … LDAP authentication is not secure on its own. A passive eavesdropper could learn your LDAP password by listening in on traffic in flight, so using SSL/TLS encryption is highly recommended.
What is port 110 used for?
Port 110 is used by the POP3 protocol for unencrypted access to electronic mail. The port is intended for end-users to connect to a mail server to retrieve messages.
What is port 139 commonly used for?
The port 139 is used for File and Printer Sharing but happens to be the single most dangerous Port on the Internet. This is so because it leaves the hard disk of a user exposed to hackers.
Why do we need port numbers?
A port is simply a channel of communication which is numbered between 1 and 65000. All network devices use them and most have the ability to change them when required. They were originally created to allow multiple programs to use the same IP address. The best way to understand ports is to think of the postal system.
Why is NTLM not secure?
No Mutual Authentication Unlike Kerberos, when a client authenticates to a server using NTLM, it cannot validate the identity of the server. This means that a malicious actor with man-in-the-middle capabilities could send the client fake/malicious data while impersonating the server.
What is the difference between basic authentication and NTLM?
NTLM — Uses an encrypted challenge/response that includes a hash of the password. … Basic — Prompts the user for a username and password to authenticate the user against the Windows Active Directory.