Scan for open ports

Are TCP 139 (netbios-ssn) and TCP 445 (microsoft-ds).2. Scan 10.6.6.0/24 Subnet: Perform a nmap -sN scan on the 10.6.6.0/24 subnet.┌──(root㉿Kali)-[~]└─# nmap -sN 10.6.6.0/24 Starting Nmap 7.94 ( ) at 2023-10-03 12:10 UTCNmap scan report for webgoat.vm (10.6.6.11)Host is up (0.000010s latency).Not shown: 997 closed tcp ports (reset)PORT STATE SERVICE8080/tcp open|filtered http-proxy8888/tcp open|filtered sun-answerbook9001/tcp open|filtered tor-orportMAC Address: 02:42:0A:06:06:0B (Unknown)Nmap scan report for juice-shop.vm (10.6.6.12)Host is up (0.000011s latency).Not shown: 999 closed tcp ports (reset)PORT STATE SERVICE3000/tcp open|filtered pppMAC Address: 02:42:0A:06:06:0C (Unknown)Nmap scan report for dvwa.vm (10.6.6.13)Host is up (0.000011s latency).Not shown: 999 closed tcp ports (reset)PORT STATE SERVICE80/tcp open|filtered httpMAC Address: 02:42:0A:06:06:0D (Unknown)Nmap scan report for mutillidae.vm (10.6.6.14)Host is up (0.000011s latency).Not shown: 998 closed tcp ports (reset)PORT STATE SERVICE80/tcp open|filtered http3306/tcp open|filtered mysqlMAC Address: 02:42:0A:06:06:0E (Unknown)Nmap scan report for gravemind.vm (10.6.6.23)Host is up (0.000011s latency).Not shown: 994 closed tcp ports (reset)PORT STATE SERVICE21/tcp open|filtered ftp22/tcp open|filtered ssh53/tcp open|filtered domain80/tcp open|filtered http139/tcp open|filtered netbios-ssn445/tcp open|filtered microsoft-dsMAC Address: 02:42:0A:06:06:17 (Unknown)Nmap scan report for 10.6.6.100 (10.6.6.100)Host is up (0.000011s latency).All 1000 scanned ports on 10.6.6.100 (10.6.6.100) are in ignored states.Not shown: 1000 closed tcp ports (reset)MAC Address: 02:42:0A:06:06:64 (Unknown)Nmap scan report for 10.6.6.1 (10.6.6.1)Host is up (0.000011s latency).Not shown: 999 closed tcp ports (reset)PORT STATE SERVICE22/tcp open|filtered sshNmap done: 256 IP addresses (7 hosts up) scanned in 4.70 secondsAre there any potential target computers on this subnet running SMB services? Which computer or computers? How do you know?Yes, the computer at 10.6.6.23 is a potential target. It has ports 139 and 445 open,

Managing switch port utilization helps you ensure that your network has enough available ports for any new devices attempting to connect. The services running in your system ports need to be constantly checked to ensure that only authorized services are running, since when one service is running on a port, no other service can utilize the port. These factors make it important to ensure that there are enough ports available for authorized applications to communicate with your network.Enhanced network visibility with OpUtils Port Scanner Quickly identify open ports and vulnerabilities. Scan and analyze TCP/UDP ports for security risks. Generate detailed reports for network audits.Thank you for downloading.Scanning ports with OpUtils: A look into OpUtils' sample port scan resultsOpUtils' effective port scanning capability enables full-fledged network scanning to help you detect open ports in your network and identify the services running on them. With switch port scanning, OpUtils helps you gain in-depth insights into how your network switch ports are connected and the end device accessing each of them. To better understand how you as a network admin can take advantage of this capability, let's have a look into one of OpUtils sample port scan results.Initiating a port scan in OpUtilsFor system ports: Network admins can trigger an open port scan using the Port Scanner tool available under OpUtils' comprehensive network toolset. Using this tool, network admins can scan ports associated to a single IP address or range of IP addresses by specifying the starting and ending IP. Once the IP details and port range requirement is specified, OpUtils starts scanning all the ports within the specified range. An open port scanner is crucial for detecting open ports and addressing potential vulnerabilities to strengthen network security.For switch ports: OpUtils offers flexible switch port discovery options, enabling you to get started with monitoring your entire network's switch ports within minutes. You can choose to add your switches for port scanning through network discovery, importing from a CSV file, or by specifying the switch addresses for switch discovery.Open port scanner resultsUpon running an open port scan, OpUtils displays the list of scanned ports, their response time and status, and the service currently running in the port. This helps network admins get insights into all the services currently accessing their network ports. Admins can validate this list with the authorized services and block all any malicious services communicating with their systems. Not just that, with the list of all open ports in the network, network admins can also choose to close these open ports to enhance network security and reduce the pathways of possible malicious network access.Some of the common port services scanned by OpUtils’ port scanning software are,Port NumberPort Services21File Transfer Protocol22Secure File Transfer Protocol23Telnet – unencrypted text messages25Simple Mail Transfer Protocol161Simple Network Management Protocol3389Remote Desktop ProtocolSwitch port scanning and insights into network communicationOpUtils' switch port scanner enables network admins to scan and map network switches to ports and their connected devices. Scanning switch ports with this end-to-end port scanning tool gives network

44.94 secondsBasically, these nmap scan results indicate that we scanned a subnet with a total of 4096 IP addresses. In addition, no hosts were up or responding to the scan within that subnet. Therefore, nmap did not detect any active devices within the specified IP address range during the scan.4.3. Scanning All PortsActually, we can use nmap to scan all ports on remote or local servers. We can achieve this by using the -p option, which provides information about filtered, open, and closed ports. Also, the command is helpful during activities like network mapping, reconnaissance, etc.For example, let’s use the -p option to scan for open ports on a network:$ nmap -p 1-65535 scanme.nmap.org Starting Nmap 7.94SVN ( ) at 2024-04-24 14:45 EDTNmap scan report for scanme.nmap.org (45.33.32.156)Host is up (0.24s latency).Other addresses for scanme.nmap.org (not scanned): 2600:3c01::f03c:91ff:fe18:bb2fNot shown: 65529 filtered tcp ports (no-response)PORT STATE SERVICE22/tcp open ssh80/tcp open http110/tcp open pop31720/tcp open h323q9319929/tcp open nping-echo31337/tcp open EliteNmap done: 1 IP address (1 host up) scanned in 637.64 secondsIn this example, we’re able to get information about the open ports and services running on the target system from the scan results. Additionally, from the result, 65529 TCP ports were filtered, indicating that nmap received no response from those ports. This is because of firewall rules, network configuration, or other factors restricting access to those ports.4.4. OS and Service DetectionMore so, nmap enables us to detect the OS and service of the targets. We can achieve this by specifying the -A option. The -A option enables aggressive scanning, combining various techniques, including script scanning and traceroute, to provide more detailed information about the target system and its services.For example, let’s use the -A option to detect the OS and service of the targets:$ nmap -A scanme.nmap.org Starting Nmap 7.94SVN ( )

ManageEngine OpUtils offers a reliable port scanner tool that enables you to effectively scan your network switch ports and the system's TCP and UDP ports. With ports being the enablers of network communication, it is important that you keep track of how your ports are being utilized. This has made port scanners online and offline, a go-to tool for network admins to scan port, monitor them, and secure their IT infrastructure. Port scanning not only helps you understand port utilization but also enables you to secure your network from unauthorized access and enhance capacity planning. A port scanner acts as a detective, allowing network administrators to explore the network landscape to identify potential vulnerabilities.On this page, we will be looking into, The need for a port scanner Scanning ports: A look into OpUtils' sample port scan results OpUtils' port scan reports Securing network access with the integrated Rogue Detection module How does OpUtils simplify port scanning in complex IT infrastructures?The need for a port scannerNetwork admins rely on port scanners to scan and inspect their network endpoints, which includes switch ports and system ports. These endpoints allow various network components and users to access and communicate with your network. Scanning ports helps you enhance security by ensuring your network hosts are configured to run only approved network services, and block ports from allowing any unauthorized traffic. A real-time port scanner continuously monitors open and closed ports, allowing admins to promptly identify and respond to suspicious activities. Hence, investing in the best port scanner is essential to fortify network security, identify vulnerabilities, and proactively safeguard against potential cyber threats.Without an effective network port scanner solution in place, your network can become vulnerable to the following: Unauthorized network access Data leakage Hindered network availabilityUnauthorized network accessNetwork entities can easily scan and access services running in your network through open ports. Ports that remain continually open present themselves as a potential network vulnerability. An intruder can access an open port to wreak havoc in the normal flow of network operations. Hence, deploying an advanced port scanner can swiftly analyze your network's security posture by identifying open ports and potential malicious devices. You can use a port scanner for Windows and Linux to effectively monitor and secure your network infrastructure.Data leakageSince network components communicate using data flow through ports, it is important to closely monitor your network ports using port scanning solutions. Unauthorized and rogue agents accessing your network ports can lead to data leakage and compromise overall network security. Port scanning helps you detect connections to your network and secure the communications flowing in the network. With port scanner tool, you can conduct comprehensive scans to ensure robust network defense by detecting and addressing any exposed ports. Using an IP port scanner, you can specifically scan IP addresses and their associated ports to identify vulnerabilities and strengthen your network security posture.Hindered network availabilityFacilitating message transfer for any component willing to communicate with your network, ports are the gateway to your network. Tracking and

Work globally between domains.Domain Controller (DC): Manages network and identity security requests, authenticates users, and controls access to IT resources.Lightweight Directory Access Protocol (LDAP): A directory access protocol enabling communication for services and clients using LDAP naming services.Workgroup: A group of standalone computers administered independently.Part 2: Use Nmap to Find SMB ServersStep 1: Scan Virtual Networks to Find Potential TargetsIdentifying potential SMB targets involves scanning open ports. Common ports associated with SMB services include:TCP 135: RPCTCP 139: NetBIOS SessionTCP 389: LDAP ServerTCP 445: SMB File ServiceTCP 9389: Active Directory Web ServicesTCP/UDP 137: NetBIOS Name ServiceUDP 138: NetBIOS DatagramScan 172.17.0.0 Virtual Network: Use the nmap -sN command to find services on hosts in the 172.17.0.0 virtual network.┌──(root㉿Kali)-[~]└─# nmap -sN 172.17.0.0/24Starting Nmap 7.94 ( ) at 2023-10-03 12:10 UTCNmap scan report for metasploitable.vm (172.17.0.2)Host is up (0.000010s latency).Not shown: 983 closed tcp ports (reset)PORT STATE SERVICE21/tcp open|filtered ftp22/tcp open|filtered ssh23/tcp open|filtered telnet25/tcp open|filtered smtp80/tcp open|filtered http111/tcp open|filtered rpcbind139/tcp open|filtered netbios-ssn445/tcp open|filtered microsoft-ds512/tcp open|filtered exec513/tcp open|filtered login514/tcp open|filtered shell1099/tcp open|filtered rmiregistry1524/tcp open|filtered ingreslock2121/tcp open|filtered ccproxy-ftp3306/tcp open|filtered mysql5432/tcp open|filtered postgresql6667/tcp open|filtered ircMAC Address: 02:42:AC:11:00:02 (Unknown)Nmap scan report for 172.17.0.1 (172.17.0.1)Host is up (0.000010s latency).Not shown: 999 closed tcp ports (reset)PORT STATE SERVICE22/tcp open|filtered sshNmap done: 256 IP addresses (2 hosts up) scanned in 4.60 secondsWhat does Nmap reveal about hosts on the 172.17.0.0/24 network?Only one host is present, identified as 172.17.0.2.What ports are open on the host that identify running SMB services? What does Nmap call these services?The open ports on the host 172.17.0.2