In the networking world, a port is an endpoint where communication takes place. In other words, it is a point where information is sent and received. To understand clearly ports, consider ports as entry points or doors of a house and services as the traffic entering into a house via entry points.
The method of determining the open ports on the network is called a port scan (you can also do a remote port scan). In the context of our example, port scanning is the process of knocking on doors to check if someone is home. Similarly, when a port scan runs on a network, it exposes which ports are open and receiving the information. Moreover, it exposes the existence of security devices on the network, such as firewalls between the source and the destination. So let us first know what a port scanner is.
What is Port Scanner?
A port scanner enables you to determine all open ports present on the network i.e. it helps you to run a scan for open ports. In addition, it helps you to identify all hosts connected and services, like FTP or HTTP, running on the network to detect any security breach. Additionally, many advanced port scanners provide detailed information about the ports present on the network. This information includes DNS, MAC, connected IP, and the name and details of each port’s interface.
Hackers or attackers also use port scanners to determine services running on the network and exploit their vulnerability. Pen testers and network administrators use port scanners to find weak and exploitable systems to strengthen them against malicious attacks. Moreover, they use port scanners with vulnerability management tools to determine new devices present on the network that need the utmost security.
A port scanner identifies active hosts inside the specified IP address range by examining the entire IP address block using TCP and ICMP . Once all the active hosts are discovered in the specified IP address range, a port scanner scans the host for UDP and TCP ports. These are communication paths between the host and other devices or machines connected to the network.
The Need for a Port Scanner
As mentioned earlier, ports act as communication endpoints, and services running on these ports can access all sensitive data present in the target system. However, it is mandatory to keep track of all services running on the associated network devices and ports in the network. Therefore, a port scanner plays a crucial role in ensuring that the network is stable as well as securing the network environment.
Some ports in the network may always remain open. As a result, such ports may include all possible network vulnerabilities. Attackers or hackers can access these open, vulnerable ports to create obstacles in the network’s normal operations. Therefore, if a port scanner is not used, hackers or intruders can create havoc in network operations.
A port scanner is essential to monitor all the network ports closely to avoid data leakage so that the communication inside the network remains secure. Therefore, it is essential to use an effective and advanced port scanning tool to protect your network from malicious hackers and unauthorized access as well as to reduce all possible risk factors.
Types of Port Scanning
There are different types of port scanning methods. Therefore, you have to choose the one depending upon your goal. However, intruders and malicious hackers also use a particular port scanning technique based on their attack strategy. Let us see some significant port scanning techniques below.
1. SYN Scan or Half-open Scan
SYN stands for synchronizing. The port scan technique is utilized by malicious hackers or intruders to find a specific port’s status without establishing the whole connection. Therefore, it is referred to as half-open scans. The principal motive of the half-open or SYN scan technique is to scan opened ports present on the target device. An SYN message is sent without establishing a complete connection with the target device.
2. Ping Scan
Administrators utilize the ping scan technique to make it impossible for intruders or attackers to find any network using ping commands. They disable or troubleshoot the ping scan using firewalls, not allowing hackers to use the ping scan. Ping scans are ICMP requests. The primary objective of a ping scan is to identify whether a network data packet can be allocated without any errors to an IP address.
3. XMAS Scan
Generally, XMAS scans are less detectable by firewalls. For instance, the server or a client sends a FIN packet to terminate the TCP 3-way handshake connection and stop the successful transfer of data. Firewalls look for SYN packets, and hence FIN packets go unnoticed. Therefore, the XMAS scan technique transmits packets that contain FIN packets without expecting a response, which indicates that the port is open. The RST response will be received if the post is closed.
Port Scan Results
When the port is scanned, it exposes its status in one of the 3 types; open, closed, or filtered.
1. Open Ports
When the network or the target server accepts the datagram packets or establishes a connection and sends a packet, indicating that it is listening, they are referred to as open ports. As mentioned earlier, the major goal of port scanning is to identify open ports in the network. Moreover, attackers achieve a victory in attacking the network if there are open ports.
2. Closed Ports
When the target server of the network receives the datagram packet or a request, but the port does not have any service ‘listening’, such ports are closed ports. A closed port represents that a host is present on an IP address. The status of closed ports can be changed into open by IT administrators to create vulnerabilities.
3. Filtered Ports
When the request or datagram packet is sent to the host, but it does not receive the request, does not respond, and is not listening then such ports are called filtered ports. In other words, firewalls block or filter out the request packet sent to the host. Therefore, intruders or hackers cannot find any information if the request packet does not reach its destination.
10 Best Online Port Scanners
A broad spectrum of port scanner tools is available today. Therefore, choosing the correct port scanner is extremely important. Below are some of the most preferred port scanners with their features:
SolarWinds Port Scanner is one of the best and most widely-used port scanners online. It allows users to develop a list of closed, open, and filtered ports for every IP address scanned by the port scanner. With SolarWindows Port Scanner, you can scan all available IP addresses.
Moreover, it helps you scan the TCP and UDP ports of each IP address to determine network vulnerabilities. The online port scanner supports multithreading to reduce scan run times. It supports the command line to run any scan. In addition, it enables users to define the desired DNS server. All the scanned configurations can be saved in one place.
SolarWinds Port Scanner enables users to keep track of the connection between the user and endpoint devices. There is a Network Configuration Manager that automates compliance management and network configuration. As a result, it saves effort and reduces costs. Some significant features of Network Configuration Manager are:
- Automated configuration backups.
- Bulk configuration.
- Automated firmware upgrades.
- Vulnerability scanning .
The SolarWinds Port Scanner is a free online port scanner. However, the Network Configuration Manager offers a 30-day free trial and later requires a one-time payment of $2,995.
Another popular online port scanner is HideMy.name. It enables the scanning of open ports and their functionalities. When you use this port scanner, you need to enter your IP address or domain, select the type of ports scanned, and hit the ‘Scan’ button to identify the open ports.
All tests in the HideMy.name port scanner are performed using the NMap scanner. It shows how your desktop or laptop is open to the outside world. HideMy.name can be installed on Android, Linux, Windows, and macOS systems. Besides a port scanner, HideMy.name offers other services, such as:
- A proxy list.
- Speed test.
- Ping test.
- Know your IP.
- Anonymity check.
- Email checker.
- Proxy checker.
- Whois information.
HideMy.name is available at $8 per month. If you pay the subscription amount for 6 months, the charges are $4 per month. However, it charges $3 per month when billed annually. Moreover, you can opt for two-year, three-year, and five-year subscription plans to save more money.
It is an open-source and free online port scanner. This port scanner is ideal for system developers, network engineers, and system administrators. NMap stands for Network Mapper. Gordon Lyon developed NMap using an array of programming languages, including Python, Lua, C and C++ . NMap supports all major operating systems, such as macOS, Linux, and Windows.
Network engineers or system administrators use NMap scan online to send packets and analyze responses to identify hosts and services running on the network. It also offers a feature of operating system detection. The online port scanner is typically used to audit the device’s or a firewall’s security by determining the network connections made through it.
In addition, it determines all open ports present on the host. NMap performs security auditing of a network by determining new servers. Finally, the version detection feature interrogates remote devices’ network services to find the application name and its version number. NMap offers more advanced data on targets, such as device types, DNS names, and MAC addresses. Other advanced features of NMap include:
- Asset management.
- Network inventory.
- Network mapping.
- Response analysis.
- Exploiting vulnerabilities in the network.
- Subdomain search.
- DNS queries.
Another free and open-source online port scanner is Advanced Port Scanner. Famatech is the developer of Advanced Port Scanner. It enables users to determine all open ports present on the computer network. Moreover, it allows users to drive the versions of programs that are streaming on the detected ports.
To identify open ports on a network using Advanced Port Scanner, you need to enter the IP address range and the list of ports to be scanned and hit the ‘Scan’ button. Advanced Port Scanner supports multi-thread scan technology, allowing users to scan multiple or hundreds of ports in a few seconds. It is one of the most desired port scanners that scan network devices quickly and rapidly.
In addition, it enables users to access the found resources, such as HTTP, FTP, HTTPS, and shared folders. The port scanning tool supports RDP and Radmin, enabling users to access remote computers. However, one of the most amazing characteristics of this port scanner is that it allows you to run commands on a remote desktop i.e. run a remote port scan. It also has remote PC shutdown and Wake-On-LAN features.
It is a switch port and IP address management tool. It is ideal for security admins and network admins of government, private, small-scale, and enterprise-scale IT infrastructures. This software tool helps them to diagnose and monitor IT resources.
ManageEngine OpUtils is a cross-platform software supporting macOS, Windows, and Linux systems. It combines 20 more comprehensive tools, enabling network and security admins to perform network monitoring activities, like backing up Cisco configuration files, identifying a rogue device intrusion, regulating the availability of complex devices, and tracing bandwidth usage. The IP address management feature identifies all the used and available IP addresses by scanning IPv4 and IPv6 subnets.
In addition, the switch port management feature scans the network’s switches and offers information, like the user and physical location. The Wake-On-LAN tool in ManageEngine OpUtils offers scheduled and manual boot-up of the network’s interactive machines. In addition, the port scanning software includes various tools, like SNMP tools, Cisco tools, address monitoring tools, network tools, and diagnostic tools.
You need to connect with a vendor to get its pricing.
It is an open-source port scanner offering great features. MiTec Scanner supports multi-threading scanning of SNMP, ICP, IP, port, ActiveDirectory, MAC address, shared resources, open files, event log, SAM account, WIN queries, sessions, NetBIOS, and more.
MiTec Scanner is specially designed for the Windows operating systems, as it supports Windows Vista and newer, Server 2021, Server 2016, and Server 2019. In addition, it is an all-in-one scanner suitable for general users interested in computer security and system administrators. The port scanning software also enables users to auto-detect the local IP range and troubleshoot hostnames.
Users can edit the results of scanning and save or load them into CSV file format. In addition, it supports Ping Sweep scans for UDP and TCP ports that are open. Resource sharing is also supported by MiTec Scanner. All the available interfaces of the SNMP devices are detected, and their properties are showcased.
MiTec Scanner is only free to use for non-commercial and educational purposes. For commercial purposes, you must opt for a license. It charges around $35 for each user.
NoVirusThanks is the developer of IPVoid, which is an open-source and free-to-use port scanning tool. The primary objective of the port scanning software is to offer a set of various tools to resolve all network issues and assist users in collecting information about IP addresses. Earlier, IPVoid was used as an IP blacklist checker tool. Still, later it expanded a lot to become one of the best network tools for systems administrators and internet users, and researchers.
IPVoid is specially designed to scan TCP ports using the NMap port scanner. It seamlessly integrates with NMap to detect all open ports on the network and identify all services, such as DNS test, FTP, MySQL, Apache, SSH, mail telnet, and many others running on the server. To identify open TCP ports and services running on them, you just need to type your IP address and select to scan all ports or a custom port. Later, click on the ‘Scan’ option to get the result. Unfortunately, the IPVoid TCP port scanner does not allow users to scan IP addresses that they do not own.
Angry IP Scanner is yet another no-cost online port scanner. It is specially designed to scan the internet and the local network. Hence, it is called the network scanner. Angry IP Scanner is compatible with Linux, macOS, and Windows platforms. It is suitable for network administrators of government agencies, small-scale and large-scale businesses, and banks to scan IP addresses and ports on a network.
More than 29 million people across the globe use Angry IP Scanner. One of the most crucial benefits of using Angry IP Scanner is that it does not need any installation. It is capable of scanning any local network and the internet. The result of a scanned network or the internet can be saved or loaded into any file format.
In addition, it supports multiple data fetches, making it extensible. Additionally, Angry IP Scanner offers a command-line interface and is extremely straightforward to use. Finally, it seamlessly integrates with Java via a plugin.
Another free and cross-platform port scanner is LanSweeper IP Scanner. It allows users to scan all ports present on the network to retrieve their information. It has a user-friendly interface, providing various scanning targets. In addition, it is one of the most comprehensive scanning tools for network administrators, helping them manage the IP Network inventory.
LanSweeper IP Scanner supports multiple protocols, such as FTP, SNMP, SSH, and HTTP, to collect relevant information about a network. In addition, this tool allows users to use ping commands, group several computers using IP location, run different custom actions, like Wake-On-LAN, remote shutdown, track the usage of IP address in a network, and more.
The port scanner enables network administrators to scan the on-demand IP ranges or by default, IP ranges, remove any devices from the scanned results depending upon their IP addresses, and use a CSV file to import the entire network setup. Additionally, this IP scanner helps network admins to scan internal and external hardware MAC addresses and IP addresses. It supports retrieving the currently logged-on users, finding NetBIOS information, registering device uptimes, and configuring user accounts.
Free and open-source.
WhatIsMyIp is a comprehensive port scanning tool that offers various features, like port scanner, DNS lookup, how to trace an email, internet speed test, IP tools, IP address lookup, IP whois lookup, and IP blacklist check. To use the port scanner of WhatIsMyIp, you need to enter your IP Address, select any one option out of the 4; individual, package, range, and custom, type the port number in the port text field and click on the ‘Scan’ button to view detailed results.
The individual option allows you to scan each port individually. When you pick the package option, a drop-down list appears displaying Basic, Web, Games, and Malicious. The range and custom options are only available for the WhatIsMyIp’s gold members. The range option allows you to scan using the numeric range. You have to enter two numbers, a starting value and an ending value. Finally, the custom option enables you to scan the desired port.
WhatIsMyIp offers 3 different pricing plans; Bronze, Silver, and Gold. The bronze one is free to use, Silver requires $10 per year, and Gold requires $25 per year.
Cybercriminals or malicious attackers take advantage of open ports on a network to attack or exploit all devices connected to it. In order to protect all devices on a network from being damaged, it is essential to identify all open ports present in a network. Port scanning is a technique used to determine open ports. Network administrators and security professionals use port scanners to perform port scanning as a part of a vulnerability scan.
Most of the above port scanners are open-source and free-to-use. We have mentioned some best fully-featured online port scanners. This post will assist readers in picking the best port scanner. Many of the above port scanners also include other tools, such as internet speed tests and IP address scanning.
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Katika ulimwengu wa mitandao, bandari ni mwisho ambapo mawasiliano hufanyika. Kwa maneno mengine, ni mahali ambapo habari hutumwa na kupokelewa. Ili kuelewa wazi bandari, fikiria bandari kama vituo vya kuingia au milango ya nyumba na huduma kama trafiki inayoingia ndani ya nyumba kupitia vituo vya kuingia. Mbinu ya kuamua bandari wazi kwenye mtandao inaitwa bandari skanning (unaweza pia kufanya bandari skanning mbali). Katika muktadha wa mfano wetu, port skanning ni mchakato wa kubisha milango ili kuangalia kama mtu ni nyumbani. Vivyo hivyo, wakati scan bandari anaendesha kwenye mtandao, ni exposes ambayo bandari ni wazi na kupokea habari. Zaidi ya hayo, inaonyesha kuwepo kwa vifaa vya usalama kwenye mtandao, kama vile firewalls kati ya chanzo na marudio. Kwanza, hebu tuone ni nini scanner ya bandari. Scanner ya Bandari ni nini? Bandari scanner inaruhusu wewe kuamua bandari zote wazi sasa juu ya mtandao yaani Hii inasaidia kugundua bandari zilizo wazi. Kwa kuongezea, inasaidia kutambua majeshi yote yaliyounganishwa na huduma, kama vile FTP au HTTP, zinazoendesha kwenye mtandao ili kugundua ukiukaji wowote wa usalama. Kwa kuongezea, wachunguzi wengi wa bandari ya hali ya juu hutoa habari ya kina juu ya bandari zilizopo kwenye mtandao. Taarifa hii ni pamoja na DNS, MAC, kushikamana IP, na jina na maelezo ya kila bandari ya interface. Hackers au washambuliaji pia kutumia bandari scanners kuamua huduma mbio juu ya mtandao na kutumia udhaifu wao. Pen tester na wasimamizi wa mtandao kutumia bandari scanners kupata dhaifu na exploitable mifumo ya kuimarisha yao dhidi ya mashambulizi ya uovu. Zaidi ya hayo, wao kutumia bandari scanners na zana za usimamizi wa udhaifu kuamua vifaa vipya zilizopo kwenye mtandao ambayo wanahitaji usalama mkubwa. Port scanner hutambua majeshi ya kazi ndani ya safu maalum ya anwani ya IP kwa kuchunguza block nzima ya anwani ya IP kwa kutumia TCP na ICMP. Baada ya kuwa na majeshi yote ya kazi katika safu maalum ya anwani ya IP, scanner ya bandari inachunguza mwenyeji kwa bandari za UDP na TCP. Hizi ni njia za mawasiliano kati ya mwenyeji na vifaa vingine au mashine zilizounganishwa na mtandao. Kama ilivyoelezwa hapo awali, bandari hufanya kazi kama vituo vya mwisho vya mawasiliano, na huduma zinazoendesha bandari hizi zinaweza kupata data zote nyeti zilizopo katika mfumo wa lengo. Hata hivyo, ni lazima kuweka kufuatilia huduma zote mbio juu ya vifaa vya mtandao kuhusishwa na bandari katika mtandao. Kwa hiyo, bandari scanner ina jukumu muhimu katika kuhakikisha kwamba mtandao ni imara kama vile kulinda mazingira ya mtandao. Baadhi ya bandari katika mtandao inaweza daima kubaki wazi. Matokeo yake, bandari hizo zinaweza kujumuisha udhaifu wote wa mtandao unaowezekana. Washambuliaji au wahasibu wanaweza kupata hizi wazi, bandari dhaifu kuunda vikwazo katika shughuli za kawaida za mtandao. Kwa hiyo, kama scanner bandari si kutumika, hackers au intruders inaweza kuunda uharibifu katika shughuli za mtandao. Scanner ya bandari ni muhimu kwa kuangalia bandari zote za mtandao kwa karibu ili kuepuka uvujaji wa data ili mawasiliano ndani ya mtandao yaendelee kuwa salama. Kwa hiyo, ni muhimu kutumia ufanisi na ya juu bandari scanning chombo kulinda mtandao wako kutoka hackers na upatikanaji unaofaa na pia kupunguza hatari zote zinazowezekana. Aina ya Bandari Scan Kuna aina tofauti ya bandari scanning mbinu. Kwa hiyo, unapaswa kuchagua moja kulingana na lengo lako. Hata hivyo, wavamizi na wahasibu wenye madhara pia hutumia mbinu fulani ya kuchunguza bandari kulingana na mkakati wao wa kushambulia. Hebu tuone baadhi ya muhimu bandari skanning mbinu chini. 1. Uwe na mtazamo wa kweli Scan ya Scan ya Scan ya Scan ya Scan ya Scan ya Scan ya Scan ya Scan ya Scan ya Scan ya Scan ya Scan ya Scan Mbinu ya kuchunguza bandari hutumiwa na wahasibu wenye madhara au wavamizi kupata hali maalum ya bandari bila kuanzisha uhusiano mzima. Kwa hiyo, inaitwa upasuaji wa nusu-ufunguzi. Njia ya upimaji wa nusu-wazi (SYN) ni njia ya kupima bandari zilizofunguliwa kwenye kifaa cha lengo. Ujumbe wa SYN hutumwa bila kuanzisha uhusiano kamili na kifaa cha lengo. 2. Uwezekano wa kupata Ping Scan ni mbinu ya kugundua mtandao wa mtandao wa mtandao wa mtandao wa mtandao wa mtandao wa mtandao wa mtandao wa mtandao wa mtandao wa mtandao wa mtandao wa mtandao wa mtandao wa mtandao wa mtandao wa mtandao wa mtandao wa mtandao wa mtandao wa mtandao wa ping. Wao disable au troubleshoot ping scan kutumia firewalls, si kuruhusu hackers kutumia ping scan. Ping scans ni maombi ya ICMP. Lengo la msingi la ping scan ni kutambua kama mtandao data pakiti inaweza kugawanywa bila makosa yoyote kwa anwani ya IP. 3. Uwe na mtazamo wa kweli XMAS Scan: XMAS Scan ni rahisi zaidi kugundua na firewalls. Kwa mfano, server au mteja hutuma pakiti ya FIN kumaliza uhusiano wa mkono wa TCP wa njia tatu na kuacha uhamisho wa data uliofanikiwa. Firewalls kuangalia kwa pakiti SYN, na kwa hiyo pakiti FIN kwenda unnoticed. Kwa hiyo, XMAS scan mbinu inatoa pakiti ambayo ina FIN pakiti bila kutarajia majibu, ambayo inaonyesha kwamba bandari ni wazi. Jibu la RST litapokelewa ikiwa chapisho limefungwa. Port Scan: Port Scan ni moja ya aina tatu za ports: kufunguliwa, kufungwa, au kufutwa. 1. Uwe na mtazamo wa kweli "Kama mtandao au server lengo kukubali pakiti datagram au kuanzisha uhusiano na kutuma pakiti, kuonyesha kwamba ni kusikiliza, wao ni inajulikana kama ""viwanja vya wazi.""" Kama ilivyoelezwa hapo awali, lengo kuu la scanning bandari ni kutambua bandari wazi katika mtandao. Zaidi ya hayo, washambuliaji kufikia ushindi katika kushambulia mtandao kama kuna bandari wazi. 2. Uwezekano wa kupata Kufungwa Bandari Wakati server lengo la mtandao anapokea pakiti datagram au ombi, lakini bandari haina huduma yoyote <unk> kusikiliza<unk>, bandari hizo ni bandari kufungwa. Bandari imefungwa inawakilisha kwamba mwenyeji yuko kwenye anwani ya IP. Hali ya bandari zilizofungwa zinaweza kubadilishwa kuwa wazi na wasimamizi wa IT kuunda udhaifu. 3. Uwe na mtazamo wa kweli Bandari zilizofunikwa: Wakati ombi au pakiti ya datagram inapotumwa kwa mwenyeji, lakini haipati ombi, haijibu, na haisikii, basi bandari hizo huitwa bandari zilizofunikwa. Kwa maneno mengine, firewalls kuzuia au kuchuja nje ya ombi pakiti kutumwa kwa mwenyeji. Kwa hiyo, intruders au hackers hawawezi kupata habari yoyote kama pakiti ombi haina kufikia marudio yake. 10 bora Online Port Scanners: Kwa hiyo, kuchagua scanner bandari sahihi ni muhimu sana. SolarWinds ni moja ya bora na zaidi kutumika bandari scanner online. Inaruhusu watumiaji kuendeleza orodha ya kufungwa, wazi, na kuchuja bandari kwa kila anwani ya IP scanned na scanner bandari. Kwa kutumia SolarWinds Port Scanner, unaweza kuchunguza anwani zote za IP zinazopatikana. Pia, unaweza kutumia TCP na UDP bandari ya kila anwani ya IP ili kugundua udhaifu wa mtandao. Online bandari scanner inasaidia multithreading kupunguza scan kukimbia muda. Inasaidia mstari wa amri kuendesha skani yoyote. Aidha, inawezesha watumiaji kufafanua server DNS taka. Configurations wote scanned inaweza kuhifadhiwa katika mahali moja. SolarWinds Port Scanner inawawezesha watumiaji kufuatilia uhusiano kati ya mtumiaji na vifaa vya mwisho. Kuna Network Configuration Manager kwamba automatizes usimamizi wa kufuata na mtandao Configuration. Matokeo ni kwamba, huokoa jitihada na kupunguza gharama. Baadhi ya vipengele muhimu ya Network Configuration Manager ni: - Automatic Configuration Backups. - Mpangilio wa wingi. - Upgrades moja kwa moja firmware. - Scan udhaifu. SolarWinds Port Scanner ni bure online bandari scanner. Hata hivyo, Network Configuration Manager inatoa jaribio la bure la siku 30 na baadaye inahitaji malipo ya wakati mmoja ya $ 299. Scanner nyingine maarufu ya bandari mtandaoni ni HideMy.name. Inawezesha skanning ya bandari wazi na utendaji wao. Wakati kutumia hii bandari scanner, unahitaji kuingia IP anwani yako au uwanja, kuchagua aina ya bandari scanned, na hit <unk>Scan<unk> kifungo kutambua bandari wazi. Vipimo vyote katika HideMy.name bandari scanner ni kufanyika kwa kutumia NMap scanner. Inaonyesha jinsi desktop yako au laptop iko wazi kwa ulimwengu wa nje. HideMy.name inaweza kuwekwa kwenye mifumo ya Android, Linux, Windows, na macOS. Mbali na scanner bandari, HideMy.name inatoa huduma nyingine, kama vile: - Orodha ya wakala. - Mtihani wa kasi. - Jaribio la ping. - Jua IP yako. - Angalia kutojulikana. - Mtihani wa barua pepe. - Mhakiki wa wakala. - Habari za Whois. HideMyName inapatikana kwa $ 8 kwa mwezi. Ikiwa unashiriki kwa miezi sita, malipo ni $ 4 kwa mwezi. Hata hivyo, inatoza $ 3 kwa mwezi wakati billed kila mwaka. Kwa kuongezea, unaweza kuchagua mipango ya usajili wa miaka miwili, mitatu, na mitano ili kuokoa pesa zaidi. Ni chanzo wazi na bure online bandari scanner. Hii bandari scanner ni bora kwa ajili ya watengenezaji wa mfumo, wahandisi wa mtandao, na wasimamizi wa mfumo. NMap inasimama kwa Network Mapper. Gordon Lyon maendeleo NMap kutumia safu ya lugha za programu, ikiwa ni pamoja na Python, Lua, C na C ++. NMap inasaidia mifumo yote kuu ya uendeshaji, kama vile macOS, Linux, na Windows. Wanahistoria wa mtandao au wasimamizi wa mfumo hutumia NMap scan mtandaoni kutuma pakiti na kuchambua majibu ili kutambua majeshi na huduma zinazoendesha kwenye mtandao. Pia inatoa kipengele cha kugundua mfumo wa uendeshaji. Scanner bandari online ni kawaida kutumika kwa ukaguzi wa kifaa au firewall ya usalama kwa kuamua uhusiano wa mtandao kufanywa kupitia yake. Aidha, huamua bandari zote wazi zilizopo kwenye mwenyeji. NMap hufanya ukaguzi wa usalama wa mtandao kwa kuamua seva mpya. Hatimaye, kipengele cha kugundua toleo kuuliza huduma za mtandao wa vifaa vya mbali kupata jina la programu na nambari yake ya toleo. NMap inatoa data ya juu zaidi juu ya malengo, kama vile aina ya kifaa, majina ya DNS, na anwani za MAC. Vipengele vingine vya juu vya NMap ni pamoja na: - Usimamizi wa mali. - Mfumo wa kuhifadhi. - Ramani ya mtandao. - Uchambuzi wa majibu. - Kutumia udhaifu katika mtandao. - Utafutaji wa subdomain. - maswali ya DNS. Mwingine bure na wazi chanzo online bandari scanner ni Advanced Port Scanner. Famatech ni msanidi programu wa Advanced Port Scanner. Inawawezesha watumiaji kuamua bandari zote wazi zilizopo kwenye mtandao wa kompyuta. Zaidi ya hayo, inaruhusu watumiaji kuendesha matoleo ya programu ambayo ni mkondo juu ya bandari aligundua. Ili kutambua bandari wazi kwenye mtandao kwa kutumia Advanced Port Scanner, unahitaji kuingia IP anwani mbalimbali na orodha ya bandari kuwa scanned na hit "Scan" kifungo. Advanced Port Scanner inasaidia teknolojia ya kuchunguza multi-thread, kuruhusu watumiaji kuchunguza bandari nyingi au mamia katika sekunde chache. Ni moja ya wengi wanaotaka bandari scanners kwamba scan vifaa vya mtandao haraka na kwa kasi. Kwa kuongezea, inawawezesha watumiaji kupata rasilimali zilizopatikana, kama vile HTTP, FTP, HTTPS, na folda zilizoshirikiwa. Port scanning chombo inasaidia RDP na Radmin, kuwezesha watumiaji kupata kompyuta za mbali. Hata hivyo, moja ya sifa ya ajabu zaidi ya scanner hii bandari ni kwamba inaruhusu wewe kukimbia amri juu ya desktop ya mbali yaani. Fanya skanning ya bandari ya mbali. Pia ina mbali PC shutdown na Wake-On-LAN vipengele. Ni kifaa cha usimamizi wa bandari ya kubadili na anwani ya IP. Ni bora kwa ajili ya watunzaji wa usalama na watunzaji wa mtandao wa serikali, binafsi, ndogo, na biashara-scale IT miundombinu. Programu hii inawawezesha kugundua na kufuatilia rasilimali za IT. ManageEngine OpUtils ni programu ya msalaba-platform kusaidia macOS, Windows, na mifumo ya Linux. Inajumuisha zana 20 zaidi za kina, kuwezesha wasimamizi wa mtandao na usalama kufanya shughuli za ufuatiliaji wa mtandao, kama vile kuhifadhi faili za usanidi wa Cisco, kutambua uvamizi wa kifaa cha rogue, kudhibiti upatikanaji wa vifaa tata, na kufuatilia matumizi ya bandwidth. Usimamizi wa anwani ya IP hutambua anwani zote za IP zinazotumiwa na zinazopatikana kwa kuchunguza subnets za IPv4 na IPv6. Aidha, kipengele cha usimamizi wa bandari ya kubadili scans mtandao wa kubadili na inatoa habari, kama mtumiaji na eneo la kimwili. Wake-On-LAN chombo katika ManageEngine OpUtils inatoa iliyopangwa na mwongozo boot-up ya mashine ya mtandao ya maingiliano. Kwa kuongezea, programu ya skanning ya bandari inajumuisha zana mbalimbali, kama zana za SNMP, zana za Cisco, zana za ufuatiliaji wa anwani, zana za mtandao, na zana za utambuzi. Unahitaji kuungana na muuzaji ili kupata bei yake. Ni wazi-chanzo bandari scanner kutoa vipengele kubwa. MiCalc Scanner inasaidia scanning multi-threading ya SNMP, ICP, IP, bandari, Active Directory, MAC anwani, rasilimali pamoja, faili wazi, tukio log, akaunti SAM, maswali WIN, vikao, NetBIOS, na zaidi. MiTec Scanner ni programu ya kipekee iliyoundwa kwa ajili ya Windows, na inasaidia Windows Vista na mpya, Server 2021, Server 2016, na Server 2019. Aidha, ni scanner wote katika moja yanafaa kwa ajili ya watumiaji wa jumla nia ya usalama wa kompyuta na wasimamizi wa mfumo. Programu ya skaning bandari pia inawawezesha watumiaji kugundua moja kwa moja eneo la IP la ndani na kutatua matatizo ya majina ya mwenyeji. Watumiaji wanaweza kuhariri matokeo ya skanning na kuhifadhi au kupakia yao katika muundo wa faili CSV. Kwa kuongezea, inasaidia Ping Sweep scans kwa UDP na bandari za TCP ambazo zimefunguliwa. Kushiriki rasilimali pia inasaidiwa na MiTec Scanner. Interfaces zote inapatikana ya vifaa SNMP ni aligundua, na mali yao ni showcased. MiTec Scanner ni bure tu kutumia kwa madhumuni yasiyo ya kibiashara na ya elimu. Kwa madhumuni ya kibiashara, lazima uchague leseni. Inatoza karibu $ 35 kwa kila mtumiaji. NoVirusThanks ni msanidi programu wa IPvoid, ambayo ni chanzo wazi na bure-kwa-matumizi bandari skanning chombo. Lengo kuu la programu ya scanning bandari ni kutoa seti ya zana mbalimbali kutatua masuala yote ya mtandao na kusaidia watumiaji katika kukusanya habari kuhusu anwani IP. IPvoid ni chombo cha kuangalia orodha nyeusi ya IP. Hata hivyo, baadaye ilipanuka sana kuwa moja ya zana bora za mtandao kwa wasimamizi wa mifumo na watumiaji wa mtandao, na watafiti. IPVoid ni maalum iliyoundwa kwa kuchunguza bandari TCP kwa kutumia NMap bandari scanner. Ni seamlessly integrates na NMap kugundua bandari zote wazi kwenye mtandao na kutambua huduma zote, kama vile DNS mtihani, FTP, MySQL, Apache, SSH, telnet barua, na wengine wengi mbio juu ya server. Ili kutambua bandari za TCP zilizo wazi na huduma zinazoendesha, unahitaji tu kuandika anwani yako ya IP na kuchagua kuchunguza bandari zote au bandari ya desturi. Baadaye, bonyeza chaguo <unk>Scan<unk> kupata matokeo. Kwa bahati mbaya, IPvoid TCP bandari scanner hairuhusu watumiaji kuchunguza anwani za IP kwamba wao si mmiliki. Angry IP Scanner ni moja ya bure online bandari scanner. Ni maalum iliyoundwa kwa ajili ya skanning mtandao na mtandao wa ndani. Kwa hiyo, inaitwa skana ya mtandao. Angry IP Scanner ni sambamba na Linux, macOS, na Windows majukwaa. Ni sahihi kwa wasimamizi wa mtandao wa mashirika ya serikali, biashara ndogo na kubwa, na benki kuchunguza anwani za IP na bandari kwenye mtandao. Zaidi ya watu milioni 29 duniani kote hutumia Angry IP Scanner. Moja ya faida muhimu zaidi ya kutumia Angry IP Scanner ni kwamba haihitaji usakinishaji wowote. Ni uwezo wa skanning mtandao wowote wa ndani na mtandao. Matokeo ya mtandao scanned au mtandao inaweza kuhifadhiwa au kupakiwa katika muundo wowote wa faili. Aidha, inasaidia data nyingi fetches, kufanya hivyo extensible. Aidha, Angry IP Scanner inatoa interface amri-line na ni rahisi sana kutumia. Hatimaye, ni seamlessly integrates na Java kupitia Plugin. Mwingine bure na msalaba-platform bandari scanner ni LanSweeper IP Scanner. Inaruhusu watumiaji kuchunguza bandari zote zilizopo kwenye mtandao ili kupata habari zao. Ina interface user-friendly, kutoa malengo mbalimbali skanning. Kwa kuongezea, ni moja ya zana kamili zaidi za skanning kwa wasimamizi wa mtandao, kuwasaidia kusimamia hesabu ya Mtandao wa IP. LanSweeper IP Scanner inasaidia itifaki nyingi, kama vile FTP, SNMP, SSH, na HTTP, kukusanya habari muhimu kuhusu mtandao. Kwa kuongezea, chombo hiki kinaruhusu watumiaji kutumia amri za ping, kuunganisha kompyuta kadhaa kwa kutumia eneo la IP, kuendesha vitendo tofauti vya kawaida, kama vile Wake-On-LAN, kuzima kwa mbali, kufuatilia matumizi ya anwani ya IP kwenye mtandao, na zaidi. Port scanner inaruhusu wasimamizi wa mtandao kuchunguza juu ya mahitaji IP mbalimbali au kwa default, IP mbalimbali, kuondoa vifaa yoyote kutoka matokeo scanned kulingana na anwani zao IP, na kutumia faili CSV kuagiza mtandao wote kuanzisha. Kwa kuongezea, scanner hii ya IP inasaidia wasimamizi wa mtandao kuchunguza anwani za MAC za vifaa vya ndani na nje na anwani za IP. Inasaidia kupata watumiaji ambao wameingia kwa sasa, kupata habari za NetBIOS, kusajili uptime ya kifaa, na kusanidi akaunti za mtumiaji. Bure na chanzo wazi. WhatIsMyIp ni zana ya kina ya kuchunguza bandari ambayo inatoa huduma mbalimbali, kama vile scanner bandari, DNS kuangalia, jinsi ya kufuatilia barua pepe, internet kasi mtihani, zana IP, IP anwani kuangalia, IP whois kuangalia, na IP orodha nyeusi kuangalia. "Kutumia scanner ya bandari ya WhatIsMyIp, unahitaji kuingia anwani yako ya IP, chagua chaguo lolote kati ya nne: ""Mtu binafsi,"" ""Mfuko,"" ""Upanzi,"" na ""Ubadilishaji,"" weka nambari ya bandari katika uwanja wa maandishi ya bandari na bonyeza kitufe cha ""Scan"" ili kuona matokeo ya kina." chaguo binafsi inaruhusu wewe kuchunguza kila bandari moja kwa moja. Unapochagua chaguo la mfuko, orodha ya kushuka inaonekana kuonyesha Msingi, Web, Michezo, na Malicious. mbalimbali na chaguzi desturi zinapatikana tu kwa ajili ya WhatIsMyIp's wanachama wa dhahabu. chaguo mbalimbali inaruhusu wewe kuchunguza kwa kutumia mbalimbali ya tarakimu. Lazima uingize nambari mbili, thamani ya kuanza na thamani ya mwisho. Hatimaye, chaguo desturi inawezesha scan bandari taka. WhatIsMyIp inatoa mipango mitatu tofauti ya bei; Shaba, Fedha, na Dhahabu. Bronze ni bure kwa kutumia, Silver inahitaji $ 10 kwa mwaka, na Gold inahitaji $ 25 kwa mwaka. Wahalifu wa mtandao au washambuliaji wenye madhara hutumia bandari zilizo wazi kwenye mtandao kushambulia au kutumia vifaa vyote vilivyounganishwa nayo. Ili kulinda vifaa vyote kwenye mtandao kutoka kuharibiwa, ni muhimu kutambua bandari zote wazi zilizopo katika mtandao. Port skanning ni mbinu kutumika kuamua bandari wazi. Wasimamizi wa mtandao na wataalamu wa usalama hutumia skana za bandari kufanya skana ya bandari kama sehemu ya skana ya udhaifu. Wengi wa scanner bandari hapo juu ni wazi-chanzo na bure-kwa-matumizi. Tumetaja baadhi ya bora kikamilifu featured online bandari scanners. Chapisho hili itasaidia wasomaji katika picking bora bandari scanner. Vifaa vya upimaji wa bandari vya juu pia vina vifaa vingine, kama vile vipimo vya kasi ya mtandao na upimaji wa anwani ya IP. Watu pia ni kusoma: - Jinsi ya kufanya Port Scanner katika Python? - Jinsi ya kujenga bandari Vulnerability Scanner katika Python? - Jinsi ya kupata Open Port Banner katika Python? - Jinsi ya kupata habari ya jina la kikoa katika Python? 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