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find IP address of a device


using a gateway outside your subnet but on the same switch, with no routerSplit a LAN with a low-end routerAccess to Private IP Addresses without exposing them on a networkRouting data to different ports on the same device based on MAC AddressMAC vs. IP routingHome network LAN vs Wireless and HomegroupCommunicate with a single-user Ethernet-connected device — OK to use shared LAN?What can cause a switch to change it's MAC address?How to tell if a scanner can be used over the network with WIA (or another network protocol)Modem and Router on same subnet, but network doesn't work properly













0















I have multiple devices connceted to an HP 1910-48g managed switch . Three of them are fingerprint scanner devices. We use them for time attendance reports.



Because of some problems I have to reinstall software but in order to configure the software I need to find their IP addresses. I was able to find one of device's IP address from old software. For the rest of them I tried a network scanner but I couldn't find the addresses.



Perhaps they are on a different subnet. Is there any way to narrow the search down?










share|improve this question
















bumped to the homepage by Community 11 mins ago


This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
















  • Welcome to Super User. More details are needed. You haven't given us enough detail to be able to help you. Take a minute to read How to Ask to improve your question.

    – CharlieRB
    Jun 1 '15 at 12:54






  • 1





    I find Zenmap is great for finding unknown devices. there is no gaurentee that it will be able to identify the device exactly, but it often provides the required clues, even if the vendor/OS version cannot be infered from the scan.

    – Frank Thomas
    Jun 1 '15 at 13:01











  • This might work for you

    – Moab
    Jun 1 '15 at 13:04











  • @FrankThomas is right, nmap too is great to make a map from a network, be carefull some sniffing features make a firewall to block the conectivity.

    – Francisco Tapia
    Jun 1 '15 at 13:05













  • I already installed nmap and I am trying to understand how to use it :)

    – Murat
    Jun 1 '15 at 13:08
















0















I have multiple devices connceted to an HP 1910-48g managed switch . Three of them are fingerprint scanner devices. We use them for time attendance reports.



Because of some problems I have to reinstall software but in order to configure the software I need to find their IP addresses. I was able to find one of device's IP address from old software. For the rest of them I tried a network scanner but I couldn't find the addresses.



Perhaps they are on a different subnet. Is there any way to narrow the search down?










share|improve this question
















bumped to the homepage by Community 11 mins ago


This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
















  • Welcome to Super User. More details are needed. You haven't given us enough detail to be able to help you. Take a minute to read How to Ask to improve your question.

    – CharlieRB
    Jun 1 '15 at 12:54






  • 1





    I find Zenmap is great for finding unknown devices. there is no gaurentee that it will be able to identify the device exactly, but it often provides the required clues, even if the vendor/OS version cannot be infered from the scan.

    – Frank Thomas
    Jun 1 '15 at 13:01











  • This might work for you

    – Moab
    Jun 1 '15 at 13:04











  • @FrankThomas is right, nmap too is great to make a map from a network, be carefull some sniffing features make a firewall to block the conectivity.

    – Francisco Tapia
    Jun 1 '15 at 13:05













  • I already installed nmap and I am trying to understand how to use it :)

    – Murat
    Jun 1 '15 at 13:08














0












0








0








I have multiple devices connceted to an HP 1910-48g managed switch . Three of them are fingerprint scanner devices. We use them for time attendance reports.



Because of some problems I have to reinstall software but in order to configure the software I need to find their IP addresses. I was able to find one of device's IP address from old software. For the rest of them I tried a network scanner but I couldn't find the addresses.



Perhaps they are on a different subnet. Is there any way to narrow the search down?










share|improve this question
















I have multiple devices connceted to an HP 1910-48g managed switch . Three of them are fingerprint scanner devices. We use them for time attendance reports.



Because of some problems I have to reinstall software but in order to configure the software I need to find their IP addresses. I was able to find one of device's IP address from old software. For the rest of them I tried a network scanner but I couldn't find the addresses.



Perhaps they are on a different subnet. Is there any way to narrow the search down?







networking ip






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Aug 13 '16 at 20:45









Hennes

59.3k793143




59.3k793143










asked Jun 1 '15 at 12:50









MuratMurat

65




65





bumped to the homepage by Community 11 mins ago


This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.







bumped to the homepage by Community 11 mins ago


This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.















  • Welcome to Super User. More details are needed. You haven't given us enough detail to be able to help you. Take a minute to read How to Ask to improve your question.

    – CharlieRB
    Jun 1 '15 at 12:54






  • 1





    I find Zenmap is great for finding unknown devices. there is no gaurentee that it will be able to identify the device exactly, but it often provides the required clues, even if the vendor/OS version cannot be infered from the scan.

    – Frank Thomas
    Jun 1 '15 at 13:01











  • This might work for you

    – Moab
    Jun 1 '15 at 13:04











  • @FrankThomas is right, nmap too is great to make a map from a network, be carefull some sniffing features make a firewall to block the conectivity.

    – Francisco Tapia
    Jun 1 '15 at 13:05













  • I already installed nmap and I am trying to understand how to use it :)

    – Murat
    Jun 1 '15 at 13:08



















  • Welcome to Super User. More details are needed. You haven't given us enough detail to be able to help you. Take a minute to read How to Ask to improve your question.

    – CharlieRB
    Jun 1 '15 at 12:54






  • 1





    I find Zenmap is great for finding unknown devices. there is no gaurentee that it will be able to identify the device exactly, but it often provides the required clues, even if the vendor/OS version cannot be infered from the scan.

    – Frank Thomas
    Jun 1 '15 at 13:01











  • This might work for you

    – Moab
    Jun 1 '15 at 13:04











  • @FrankThomas is right, nmap too is great to make a map from a network, be carefull some sniffing features make a firewall to block the conectivity.

    – Francisco Tapia
    Jun 1 '15 at 13:05













  • I already installed nmap and I am trying to understand how to use it :)

    – Murat
    Jun 1 '15 at 13:08

















Welcome to Super User. More details are needed. You haven't given us enough detail to be able to help you. Take a minute to read How to Ask to improve your question.

– CharlieRB
Jun 1 '15 at 12:54





Welcome to Super User. More details are needed. You haven't given us enough detail to be able to help you. Take a minute to read How to Ask to improve your question.

– CharlieRB
Jun 1 '15 at 12:54




1




1





I find Zenmap is great for finding unknown devices. there is no gaurentee that it will be able to identify the device exactly, but it often provides the required clues, even if the vendor/OS version cannot be infered from the scan.

– Frank Thomas
Jun 1 '15 at 13:01





I find Zenmap is great for finding unknown devices. there is no gaurentee that it will be able to identify the device exactly, but it often provides the required clues, even if the vendor/OS version cannot be infered from the scan.

– Frank Thomas
Jun 1 '15 at 13:01













This might work for you

– Moab
Jun 1 '15 at 13:04





This might work for you

– Moab
Jun 1 '15 at 13:04













@FrankThomas is right, nmap too is great to make a map from a network, be carefull some sniffing features make a firewall to block the conectivity.

– Francisco Tapia
Jun 1 '15 at 13:05







@FrankThomas is right, nmap too is great to make a map from a network, be carefull some sniffing features make a firewall to block the conectivity.

– Francisco Tapia
Jun 1 '15 at 13:05















I already installed nmap and I am trying to understand how to use it :)

– Murat
Jun 1 '15 at 13:08





I already installed nmap and I am trying to understand how to use it :)

– Murat
Jun 1 '15 at 13:08










2 Answers
2






active

oldest

votes


















0














This will work if the scanner has static IP.




  1. Disconnect the scanner from HP 1910-48g and put in on a separated switch or hub.


  2. Connect a PC running Wireshark on other port of the switch / hub.


  3. Turn off the scanner, connect it to the switch /hub and turn it on.


  4. On Wireshark you will find ARP packets sent by the scanner. Clearly you will see the IP address of the scanner.







share|improve this answer
























  • unfurtunatly cables are not marked and scanners mounted to wall. I would like to avoid dismount them. Of course I'll do as you suggested if there are no other way.

    – Murat
    Jun 1 '15 at 13:03











  • Even if they’re unmarked you’ll be able to see if you’re using the scanner you separated. After that, don’t forget to label the cables. ;)

    – Daniel B
    Jun 1 '15 at 13:07



















-1














If possible, go into your Router or NAT's settings (try going into http://thenatorrouter/) and see if it can show any IP addresses. If not, then see if there are some configuration menus on the scanner. If you go into the network configuration, there may be some menus. Find something along the lines of "connection status" and it may list the IP address there.






share|improve this answer
























  • This seems an office environment, possibly without NAT which is only needed if you do nto have enough real public IPs. And he is using a managed switch.

    – Hennes
    Aug 13 '16 at 20:47













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2 Answers
2






active

oldest

votes








2 Answers
2






active

oldest

votes









active

oldest

votes






active

oldest

votes









0














This will work if the scanner has static IP.




  1. Disconnect the scanner from HP 1910-48g and put in on a separated switch or hub.


  2. Connect a PC running Wireshark on other port of the switch / hub.


  3. Turn off the scanner, connect it to the switch /hub and turn it on.


  4. On Wireshark you will find ARP packets sent by the scanner. Clearly you will see the IP address of the scanner.







share|improve this answer
























  • unfurtunatly cables are not marked and scanners mounted to wall. I would like to avoid dismount them. Of course I'll do as you suggested if there are no other way.

    – Murat
    Jun 1 '15 at 13:03











  • Even if they’re unmarked you’ll be able to see if you’re using the scanner you separated. After that, don’t forget to label the cables. ;)

    – Daniel B
    Jun 1 '15 at 13:07
















0














This will work if the scanner has static IP.




  1. Disconnect the scanner from HP 1910-48g and put in on a separated switch or hub.


  2. Connect a PC running Wireshark on other port of the switch / hub.


  3. Turn off the scanner, connect it to the switch /hub and turn it on.


  4. On Wireshark you will find ARP packets sent by the scanner. Clearly you will see the IP address of the scanner.







share|improve this answer
























  • unfurtunatly cables are not marked and scanners mounted to wall. I would like to avoid dismount them. Of course I'll do as you suggested if there are no other way.

    – Murat
    Jun 1 '15 at 13:03











  • Even if they’re unmarked you’ll be able to see if you’re using the scanner you separated. After that, don’t forget to label the cables. ;)

    – Daniel B
    Jun 1 '15 at 13:07














0












0








0







This will work if the scanner has static IP.




  1. Disconnect the scanner from HP 1910-48g and put in on a separated switch or hub.


  2. Connect a PC running Wireshark on other port of the switch / hub.


  3. Turn off the scanner, connect it to the switch /hub and turn it on.


  4. On Wireshark you will find ARP packets sent by the scanner. Clearly you will see the IP address of the scanner.







share|improve this answer













This will work if the scanner has static IP.




  1. Disconnect the scanner from HP 1910-48g and put in on a separated switch or hub.


  2. Connect a PC running Wireshark on other port of the switch / hub.


  3. Turn off the scanner, connect it to the switch /hub and turn it on.


  4. On Wireshark you will find ARP packets sent by the scanner. Clearly you will see the IP address of the scanner.








share|improve this answer












share|improve this answer



share|improve this answer










answered Jun 1 '15 at 12:58









jcbermujcbermu

15.6k24355




15.6k24355













  • unfurtunatly cables are not marked and scanners mounted to wall. I would like to avoid dismount them. Of course I'll do as you suggested if there are no other way.

    – Murat
    Jun 1 '15 at 13:03











  • Even if they’re unmarked you’ll be able to see if you’re using the scanner you separated. After that, don’t forget to label the cables. ;)

    – Daniel B
    Jun 1 '15 at 13:07



















  • unfurtunatly cables are not marked and scanners mounted to wall. I would like to avoid dismount them. Of course I'll do as you suggested if there are no other way.

    – Murat
    Jun 1 '15 at 13:03











  • Even if they’re unmarked you’ll be able to see if you’re using the scanner you separated. After that, don’t forget to label the cables. ;)

    – Daniel B
    Jun 1 '15 at 13:07

















unfurtunatly cables are not marked and scanners mounted to wall. I would like to avoid dismount them. Of course I'll do as you suggested if there are no other way.

– Murat
Jun 1 '15 at 13:03





unfurtunatly cables are not marked and scanners mounted to wall. I would like to avoid dismount them. Of course I'll do as you suggested if there are no other way.

– Murat
Jun 1 '15 at 13:03













Even if they’re unmarked you’ll be able to see if you’re using the scanner you separated. After that, don’t forget to label the cables. ;)

– Daniel B
Jun 1 '15 at 13:07





Even if they’re unmarked you’ll be able to see if you’re using the scanner you separated. After that, don’t forget to label the cables. ;)

– Daniel B
Jun 1 '15 at 13:07













-1














If possible, go into your Router or NAT's settings (try going into http://thenatorrouter/) and see if it can show any IP addresses. If not, then see if there are some configuration menus on the scanner. If you go into the network configuration, there may be some menus. Find something along the lines of "connection status" and it may list the IP address there.






share|improve this answer
























  • This seems an office environment, possibly without NAT which is only needed if you do nto have enough real public IPs. And he is using a managed switch.

    – Hennes
    Aug 13 '16 at 20:47


















-1














If possible, go into your Router or NAT's settings (try going into http://thenatorrouter/) and see if it can show any IP addresses. If not, then see if there are some configuration menus on the scanner. If you go into the network configuration, there may be some menus. Find something along the lines of "connection status" and it may list the IP address there.






share|improve this answer
























  • This seems an office environment, possibly without NAT which is only needed if you do nto have enough real public IPs. And he is using a managed switch.

    – Hennes
    Aug 13 '16 at 20:47
















-1












-1








-1







If possible, go into your Router or NAT's settings (try going into http://thenatorrouter/) and see if it can show any IP addresses. If not, then see if there are some configuration menus on the scanner. If you go into the network configuration, there may be some menus. Find something along the lines of "connection status" and it may list the IP address there.






share|improve this answer













If possible, go into your Router or NAT's settings (try going into http://thenatorrouter/) and see if it can show any IP addresses. If not, then see if there are some configuration menus on the scanner. If you go into the network configuration, there may be some menus. Find something along the lines of "connection status" and it may list the IP address there.







share|improve this answer












share|improve this answer



share|improve this answer










answered Jun 1 '15 at 14:52









TomWebPersonTomWebPerson

1141214




1141214













  • This seems an office environment, possibly without NAT which is only needed if you do nto have enough real public IPs. And he is using a managed switch.

    – Hennes
    Aug 13 '16 at 20:47





















  • This seems an office environment, possibly without NAT which is only needed if you do nto have enough real public IPs. And he is using a managed switch.

    – Hennes
    Aug 13 '16 at 20:47



















This seems an office environment, possibly without NAT which is only needed if you do nto have enough real public IPs. And he is using a managed switch.

– Hennes
Aug 13 '16 at 20:47







This seems an office environment, possibly without NAT which is only needed if you do nto have enough real public IPs. And he is using a managed switch.

– Hennes
Aug 13 '16 at 20:47




















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