- #Traffic between ephemeral ports install
- #Traffic between ephemeral ports series
This is a critical service used by clients to locate resource records in the domain and lookup external domain names.
Description: DNS is a critical service used to map IP addresses to host names. This protocol is used to search, add/delete, authenticate and modify data in a Directory Server such as Active Directory. Description: LDAP is a directory access protocol. Port should not be exposed to the internet. Firewall: Allow between client and server. This is Microsoft Window’s default authentication method for domain-joined devices. Description: Kerberos is an authentication protocol that authenticates requests between a client and server in a secure manner. 
This range is in addition to well-known ports that are used by services and applications. We recommend that you reconfigure the firewalls to allow traffic between servers in the dynamic port range of 49152 through 65535. This port range should not be exposed to the internet.
The RPC mapper (port 135) is used to connect clients to services running on these dynamic ports. RPC dynamic port allocation instructs the RPC program to use a particular random port in the range configured for TCP and UDP, based on the implementation of the operating system used.
Description: The dynamic port range is used by various server applications. Port 135 should not be exposed to the internet. You can see this in the above screenshot. The RPC mapper responds to the client with the port and then the client connects to that port. First the client connects to the RPC mapper service (port 135) and asks the mapper what port a given service is listening on (which will be a dynamic port range… see below). This port is used by many Microsoft services and should not be blocked by a firewall. Description: Port 135 is a critical client/server port. TCP/UDP 49152 – 65535 RPC Dynamic Ports. This is between the domain controller and a domain-joined computer. Here is a list of ports used by Active Directory by a default install. #Traffic between ephemeral ports install
The Active Directory server is a default install.Wireshark is installed on the Active Directory server.Ports used when joining a computer to the domain.Ports Used When a User Logs into a Computer.
#Traffic between ephemeral ports series
I will use WireShark and a series of tests to determine what ports are used. In this post, I will explore the TCP and UDP ports used by Active Directory from client to server.
0 kommentar(er)
