how to check OS is linux or other? [closed]
Clash Royale CLAN TAG#URR8PPP
we need to check if the following remote ip's are linux OS or other as win
example
12.43.223.4
23.54.67.3
23.5.6.3
we have Linux machine - redhat , and from this machine we need to identify the remote machine if they are Linux or other ?
as I know we can identify by nmap
but I want to find other way since nmap not installed on production machines
so any suggestion how to check remote machine is Linux or other ? ( not by nmap )
linux shell-script
edited Jan 17 at 15:55
Jeff Schaller
40.8k1056129
asked Jan 17 at 15:53
yaelyael
2,52812464
closed as too broad by Jeff Schaller, Rui F Ribeiro, Mr Shunz, andcoz, Wouter Verhelst Jan 18 at 16:31
Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.
|
show 3 more comments
we need to check if the following remote ip's are linux OS or other as win
example
12.43.223.4
23.54.67.3
23.5.6.3
we have Linux machine - redhat , and from this machine we need to identify the remote machine if they are Linux or other ?
as I know we can identify by nmap
but I want to find other way since nmap not installed on production machines
so any suggestion how to check remote machine is Linux or other ? ( not by nmap )
linux shell-script
edited Jan 17 at 15:55
Jeff Schaller
40.8k1056129
asked Jan 17 at 15:53
yaelyael
2,52812464
closed as too broad by Jeff Schaller, Rui F Ribeiro, Mr Shunz, andcoz, Wouter Verhelst Jan 18 at 16:31
Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.
1
are there any standards enforced at all? Do Windows systems have certain services running? Do Linux ones?
– Jeff Schaller
Jan 17 at 15:56
1
Are the IP addresses yours?
– Kusalananda
Jan 17 at 16:20
2
You cannot identify bynmap.nmapcan take a guess based on how the remote system responds to certain network traffic but this is a guess and it can be easily fooled.
– Doug O'Neal
Jan 17 at 16:24
2
NMAP Operating System Detection, while a noble attempt, is fundamentally flawed by reality and simply how Internet protocol works. It's right there in their readme When Nmap Guesses Wrong.
– ron
Jan 17 at 16:41
1
Is flipping a coin, head or tails, totally out of question?
– Rui F Ribeiro
Jan 17 at 16:46
|
show 3 more comments
we need to check if the following remote ip's are linux OS or other as win
example
12.43.223.4
23.54.67.3
23.5.6.3
we have Linux machine - redhat , and from this machine we need to identify the remote machine if they are Linux or other ?
as I know we can identify by nmap
but I want to find other way since nmap not installed on production machines
so any suggestion how to check remote machine is Linux or other ? ( not by nmap )
linux shell-script
edited Jan 17 at 15:55
Jeff Schaller
40.8k1056129
asked Jan 17 at 15:53
yaelyael
2,52812464
we need to check if the following remote ip's are linux OS or other as win
example
12.43.223.4
23.54.67.3
23.5.6.3
we have Linux machine - redhat , and from this machine we need to identify the remote machine if they are Linux or other ?
as I know we can identify by nmap
but I want to find other way since nmap not installed on production machines
so any suggestion how to check remote machine is Linux or other ? ( not by nmap )
linux shell-script
linux shell-script
edited Jan 17 at 15:55
Jeff Schaller
40.8k1056129
asked Jan 17 at 15:53
yaelyael
2,52812464
edited Jan 17 at 15:55
Jeff Schaller
40.8k1056129
asked Jan 17 at 15:53
yaelyael
2,52812464
edited Jan 17 at 15:55
Jeff Schaller
40.8k1056129
edited Jan 17 at 15:55
Jeff Schaller
40.8k1056129
edited Jan 17 at 15:55
Jeff Schaller
40.8k1056129
40.8k1056129
asked Jan 17 at 15:53
yaelyael
2,52812464
asked Jan 17 at 15:53
yaelyael
2,52812464
asked Jan 17 at 15:53
yaelyael
2,52812464
2,52812464
closed as too broad by Jeff Schaller, Rui F Ribeiro, Mr Shunz, andcoz, Wouter Verhelst Jan 18 at 16:31
Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.
closed as too broad by Jeff Schaller, Rui F Ribeiro, Mr Shunz, andcoz, Wouter Verhelst Jan 18 at 16:31
Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.
1
are there any standards enforced at all? Do Windows systems have certain services running? Do Linux ones?
– Jeff Schaller
Jan 17 at 15:56
1
Are the IP addresses yours?
– Kusalananda
Jan 17 at 16:20
2
You cannot identify bynmap.nmapcan take a guess based on how the remote system responds to certain network traffic but this is a guess and it can be easily fooled.
– Doug O'Neal
Jan 17 at 16:24
2
NMAP Operating System Detection, while a noble attempt, is fundamentally flawed by reality and simply how Internet protocol works. It's right there in their readme When Nmap Guesses Wrong.
– ron
Jan 17 at 16:41
1
Is flipping a coin, head or tails, totally out of question?
– Rui F Ribeiro
Jan 17 at 16:46
|
show 3 more comments
1
are there any standards enforced at all? Do Windows systems have certain services running? Do Linux ones?
– Jeff Schaller
Jan 17 at 15:56
1
Are the IP addresses yours?
– Kusalananda
Jan 17 at 16:20
2
You cannot identify bynmap.nmapcan take a guess based on how the remote system responds to certain network traffic but this is a guess and it can be easily fooled.
– Doug O'Neal
Jan 17 at 16:24
2
NMAP Operating System Detection, while a noble attempt, is fundamentally flawed by reality and simply how Internet protocol works. It's right there in their readme When Nmap Guesses Wrong.
– ron
Jan 17 at 16:41
1
Is flipping a coin, head or tails, totally out of question?
– Rui F Ribeiro
Jan 17 at 16:46
1
1
are there any standards enforced at all? Do Windows systems have certain services running? Do Linux ones?
– Jeff Schaller
Jan 17 at 15:56
are there any standards enforced at all? Do Windows systems have certain services running? Do Linux ones?
– Jeff Schaller
Jan 17 at 15:56
1
1
Are the IP addresses yours?
– Kusalananda
Jan 17 at 16:20
Are the IP addresses yours?
– Kusalananda
Jan 17 at 16:20
2
2
You cannot identify by
nmap. nmap can take a guess based on how the remote system responds to certain network traffic but this is a guess and it can be easily fooled.– Doug O'Neal
Jan 17 at 16:24
You cannot identify by
nmap. nmap can take a guess based on how the remote system responds to certain network traffic but this is a guess and it can be easily fooled.– Doug O'Neal
Jan 17 at 16:24
2
2
NMAP Operating System Detection, while a noble attempt, is fundamentally flawed by reality and simply how Internet protocol works. It's right there in their readme When Nmap Guesses Wrong.
– ron
Jan 17 at 16:41
NMAP Operating System Detection, while a noble attempt, is fundamentally flawed by reality and simply how Internet protocol works. It's right there in their readme When Nmap Guesses Wrong.
– ron
Jan 17 at 16:41
1
1
Is flipping a coin, head or tails, totally out of question?
– Rui F Ribeiro
Jan 17 at 16:46
Is flipping a coin, head or tails, totally out of question?
– Rui F Ribeiro
Jan 17 at 16:46
|
show 3 more comments
2 Answers
2
active
oldest
votes
for i in hostname1 hostname2;
do
ssh -o 'StrictHostKeyChecking no' $i -A <<'EOF'
uname -a | awk 'if($0 ~ /Linux/)print "Its Linux os"elseprint "its not linux os"'
EOF
done
answered Jan 17 at 16:28
Praveen Kumar BSPraveen Kumar BS
1,454138
1
For all that you know, it may be a router between you and the given IP address that answers on port 22 (if anything answers at all). It may not be any of the machineshostname1orhostname2.
– Kusalananda
Jan 17 at 16:32
So if hostname2 is Windows and it's (reasonably enough) not running an SSH service you'll report nothing but an error about not being able to connect.
– roaima
Jan 17 at 20:14
add a comment |
If I understand your question correctly, you are asking;
How can the operating system of a computer on a network be identified without logging in to it
It cannot.
Any computer system on a network, assuming that network is a typical IP (internet protocol) based on TCP/IP communicates based on that protocol. And if that is all you have to work with, then:
- a computer on a network can be configured to be invisible first of all, such as not respond to ping among other things,
- but if it does respond or some indication can be seen that there is this computer system on the network, how can you deduce if it is windows, Linux, macOS, Android, other? You can't: The IP/TCP protocol does not provide for that to happen.
I suppose if a system is somehow configured at a low enough level to include that kind of information in the TCP/IP header in each packet that gets sent out then maybe that can used to work with, but would be very custom. Otherwise there is no reliable I know of unless you can log in to that system. If you log in to a system via SSH protocol, well just the same because the SSH protocol is OS-independent, so if you see a computer system responding via SSH on port 22, any computer device with any operating system can do that as long as they follow the SSH protocol which then happens on top of the Internet Protocol.
This is of course is the reason why IP is so great, it allows communication between any device (regardless of operating system) as long as they follow the same internet protocol. An analogy would be I don't need to know if you are male, female, any other characteristic, as long as you follow the a given language protocol (English language in this case) then we can communicate at some level.
You may wish to read the IPV4 Wikipedia article, in addition to the history of the internet.
edited Jan 17 at 19:54
Fabby
3,87811329
answered Jan 17 at 16:22
ronron
9961814
1
nmaptries to identify the OS of remote systems. It often fails so I take exception to the 'can and does' identify OSes.
– Doug O'Neal
Jan 17 at 19:12
1
It is trivial to spoof nmap, although it is somewhat reliable with unhardened OS
– Panther
Jan 18 at 3:47
add a comment |
2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
for i in hostname1 hostname2;
do
ssh -o 'StrictHostKeyChecking no' $i -A <<'EOF'
uname -a | awk 'if($0 ~ /Linux/)print "Its Linux os"elseprint "its not linux os"'
EOF
done
answered Jan 17 at 16:28
Praveen Kumar BSPraveen Kumar BS
1,454138
1
For all that you know, it may be a router between you and the given IP address that answers on port 22 (if anything answers at all). It may not be any of the machineshostname1orhostname2.
– Kusalananda
Jan 17 at 16:32
So if hostname2 is Windows and it's (reasonably enough) not running an SSH service you'll report nothing but an error about not being able to connect.
– roaima
Jan 17 at 20:14
add a comment |
for i in hostname1 hostname2;
do
ssh -o 'StrictHostKeyChecking no' $i -A <<'EOF'
uname -a | awk 'if($0 ~ /Linux/)print "Its Linux os"elseprint "its not linux os"'
EOF
done
answered Jan 17 at 16:28
Praveen Kumar BSPraveen Kumar BS
1,454138
1
For all that you know, it may be a router between you and the given IP address that answers on port 22 (if anything answers at all). It may not be any of the machineshostname1orhostname2.
– Kusalananda
Jan 17 at 16:32
So if hostname2 is Windows and it's (reasonably enough) not running an SSH service you'll report nothing but an error about not being able to connect.
– roaima
Jan 17 at 20:14
add a comment |
for i in hostname1 hostname2;
do
ssh -o 'StrictHostKeyChecking no' $i -A <<'EOF'
uname -a | awk 'if($0 ~ /Linux/)print "Its Linux os"elseprint "its not linux os"'
EOF
done
answered Jan 17 at 16:28
Praveen Kumar BSPraveen Kumar BS
1,454138
for i in hostname1 hostname2;
do
ssh -o 'StrictHostKeyChecking no' $i -A <<'EOF'
uname -a | awk 'if($0 ~ /Linux/)print "Its Linux os"elseprint "its not linux os"'
EOF
done
answered Jan 17 at 16:28
Praveen Kumar BSPraveen Kumar BS
1,454138
answered Jan 17 at 16:28
Praveen Kumar BSPraveen Kumar BS
1,454138
answered Jan 17 at 16:28
Praveen Kumar BSPraveen Kumar BS
1,454138
answered Jan 17 at 16:28
Praveen Kumar BSPraveen Kumar BS
1,454138
1,454138
1
For all that you know, it may be a router between you and the given IP address that answers on port 22 (if anything answers at all). It may not be any of the machineshostname1orhostname2.
– Kusalananda
Jan 17 at 16:32
So if hostname2 is Windows and it's (reasonably enough) not running an SSH service you'll report nothing but an error about not being able to connect.
– roaima
Jan 17 at 20:14
add a comment |
1
For all that you know, it may be a router between you and the given IP address that answers on port 22 (if anything answers at all). It may not be any of the machineshostname1orhostname2.
– Kusalananda
Jan 17 at 16:32
So if hostname2 is Windows and it's (reasonably enough) not running an SSH service you'll report nothing but an error about not being able to connect.
– roaima
Jan 17 at 20:14
1
1
For all that you know, it may be a router between you and the given IP address that answers on port 22 (if anything answers at all). It may not be any of the machines
hostname1 or hostname2.– Kusalananda
Jan 17 at 16:32
For all that you know, it may be a router between you and the given IP address that answers on port 22 (if anything answers at all). It may not be any of the machines
hostname1 or hostname2.– Kusalananda
Jan 17 at 16:32
So if hostname2 is Windows and it's (reasonably enough) not running an SSH service you'll report nothing but an error about not being able to connect.
– roaima
Jan 17 at 20:14
So if hostname2 is Windows and it's (reasonably enough) not running an SSH service you'll report nothing but an error about not being able to connect.
– roaima
Jan 17 at 20:14
add a comment |
If I understand your question correctly, you are asking;
How can the operating system of a computer on a network be identified without logging in to it
It cannot.
Any computer system on a network, assuming that network is a typical IP (internet protocol) based on TCP/IP communicates based on that protocol. And if that is all you have to work with, then:
- a computer on a network can be configured to be invisible first of all, such as not respond to ping among other things,
- but if it does respond or some indication can be seen that there is this computer system on the network, how can you deduce if it is windows, Linux, macOS, Android, other? You can't: The IP/TCP protocol does not provide for that to happen.
I suppose if a system is somehow configured at a low enough level to include that kind of information in the TCP/IP header in each packet that gets sent out then maybe that can used to work with, but would be very custom. Otherwise there is no reliable I know of unless you can log in to that system. If you log in to a system via SSH protocol, well just the same because the SSH protocol is OS-independent, so if you see a computer system responding via SSH on port 22, any computer device with any operating system can do that as long as they follow the SSH protocol which then happens on top of the Internet Protocol.
This is of course is the reason why IP is so great, it allows communication between any device (regardless of operating system) as long as they follow the same internet protocol. An analogy would be I don't need to know if you are male, female, any other characteristic, as long as you follow the a given language protocol (English language in this case) then we can communicate at some level.
You may wish to read the IPV4 Wikipedia article, in addition to the history of the internet.
edited Jan 17 at 19:54
Fabby
3,87811329
answered Jan 17 at 16:22
ronron
9961814
1
nmaptries to identify the OS of remote systems. It often fails so I take exception to the 'can and does' identify OSes.
– Doug O'Neal
Jan 17 at 19:12
1
It is trivial to spoof nmap, although it is somewhat reliable with unhardened OS
– Panther
Jan 18 at 3:47
add a comment |
If I understand your question correctly, you are asking;
How can the operating system of a computer on a network be identified without logging in to it
It cannot.
Any computer system on a network, assuming that network is a typical IP (internet protocol) based on TCP/IP communicates based on that protocol. And if that is all you have to work with, then:
- a computer on a network can be configured to be invisible first of all, such as not respond to ping among other things,
- but if it does respond or some indication can be seen that there is this computer system on the network, how can you deduce if it is windows, Linux, macOS, Android, other? You can't: The IP/TCP protocol does not provide for that to happen.
I suppose if a system is somehow configured at a low enough level to include that kind of information in the TCP/IP header in each packet that gets sent out then maybe that can used to work with, but would be very custom. Otherwise there is no reliable I know of unless you can log in to that system. If you log in to a system via SSH protocol, well just the same because the SSH protocol is OS-independent, so if you see a computer system responding via SSH on port 22, any computer device with any operating system can do that as long as they follow the SSH protocol which then happens on top of the Internet Protocol.
This is of course is the reason why IP is so great, it allows communication between any device (regardless of operating system) as long as they follow the same internet protocol. An analogy would be I don't need to know if you are male, female, any other characteristic, as long as you follow the a given language protocol (English language in this case) then we can communicate at some level.
You may wish to read the IPV4 Wikipedia article, in addition to the history of the internet.
edited Jan 17 at 19:54
Fabby
3,87811329
answered Jan 17 at 16:22
ronron
9961814
1
nmaptries to identify the OS of remote systems. It often fails so I take exception to the 'can and does' identify OSes.
– Doug O'Neal
Jan 17 at 19:12
1
It is trivial to spoof nmap, although it is somewhat reliable with unhardened OS
– Panther
Jan 18 at 3:47
add a comment |
If I understand your question correctly, you are asking;
How can the operating system of a computer on a network be identified without logging in to it
It cannot.
Any computer system on a network, assuming that network is a typical IP (internet protocol) based on TCP/IP communicates based on that protocol. And if that is all you have to work with, then:
- a computer on a network can be configured to be invisible first of all, such as not respond to ping among other things,
- but if it does respond or some indication can be seen that there is this computer system on the network, how can you deduce if it is windows, Linux, macOS, Android, other? You can't: The IP/TCP protocol does not provide for that to happen.
I suppose if a system is somehow configured at a low enough level to include that kind of information in the TCP/IP header in each packet that gets sent out then maybe that can used to work with, but would be very custom. Otherwise there is no reliable I know of unless you can log in to that system. If you log in to a system via SSH protocol, well just the same because the SSH protocol is OS-independent, so if you see a computer system responding via SSH on port 22, any computer device with any operating system can do that as long as they follow the SSH protocol which then happens on top of the Internet Protocol.
This is of course is the reason why IP is so great, it allows communication between any device (regardless of operating system) as long as they follow the same internet protocol. An analogy would be I don't need to know if you are male, female, any other characteristic, as long as you follow the a given language protocol (English language in this case) then we can communicate at some level.
You may wish to read the IPV4 Wikipedia article, in addition to the history of the internet.
edited Jan 17 at 19:54
Fabby
3,87811329
answered Jan 17 at 16:22
ronron
9961814
If I understand your question correctly, you are asking;
How can the operating system of a computer on a network be identified without logging in to it
It cannot.
Any computer system on a network, assuming that network is a typical IP (internet protocol) based on TCP/IP communicates based on that protocol. And if that is all you have to work with, then:
- a computer on a network can be configured to be invisible first of all, such as not respond to ping among other things,
- but if it does respond or some indication can be seen that there is this computer system on the network, how can you deduce if it is windows, Linux, macOS, Android, other? You can't: The IP/TCP protocol does not provide for that to happen.
I suppose if a system is somehow configured at a low enough level to include that kind of information in the TCP/IP header in each packet that gets sent out then maybe that can used to work with, but would be very custom. Otherwise there is no reliable I know of unless you can log in to that system. If you log in to a system via SSH protocol, well just the same because the SSH protocol is OS-independent, so if you see a computer system responding via SSH on port 22, any computer device with any operating system can do that as long as they follow the SSH protocol which then happens on top of the Internet Protocol.
This is of course is the reason why IP is so great, it allows communication between any device (regardless of operating system) as long as they follow the same internet protocol. An analogy would be I don't need to know if you are male, female, any other characteristic, as long as you follow the a given language protocol (English language in this case) then we can communicate at some level.
You may wish to read the IPV4 Wikipedia article, in addition to the history of the internet.
edited Jan 17 at 19:54
Fabby
3,87811329
answered Jan 17 at 16:22
ronron
9961814
edited Jan 17 at 19:54
Fabby
3,87811329
edited Jan 17 at 19:54
Fabby
3,87811329
edited Jan 17 at 19:54
Fabby
3,87811329
3,87811329
answered Jan 17 at 16:22
ronron
9961814
answered Jan 17 at 16:22
ronron
9961814
answered Jan 17 at 16:22
ronron
9961814
9961814
1
nmaptries to identify the OS of remote systems. It often fails so I take exception to the 'can and does' identify OSes.
– Doug O'Neal
Jan 17 at 19:12
1
It is trivial to spoof nmap, although it is somewhat reliable with unhardened OS
– Panther
Jan 18 at 3:47
add a comment |
1
nmaptries to identify the OS of remote systems. It often fails so I take exception to the 'can and does' identify OSes.
– Doug O'Neal
Jan 17 at 19:12
1
It is trivial to spoof nmap, although it is somewhat reliable with unhardened OS
– Panther
Jan 18 at 3:47
1
1
nmap tries to identify the OS of remote systems. It often fails so I take exception to the 'can and does' identify OSes.– Doug O'Neal
Jan 17 at 19:12
nmap tries to identify the OS of remote systems. It often fails so I take exception to the 'can and does' identify OSes.– Doug O'Neal
Jan 17 at 19:12
1
1
It is trivial to spoof nmap, although it is somewhat reliable with unhardened OS
– Panther
Jan 18 at 3:47
It is trivial to spoof nmap, although it is somewhat reliable with unhardened OS
– Panther
Jan 18 at 3:47
add a comment |
1
are there any standards enforced at all? Do Windows systems have certain services running? Do Linux ones?
– Jeff Schaller
Jan 17 at 15:56
1
Are the IP addresses yours?
– Kusalananda
Jan 17 at 16:20
2
You cannot identify by
nmap.nmapcan take a guess based on how the remote system responds to certain network traffic but this is a guess and it can be easily fooled.– Doug O'Neal
Jan 17 at 16:24
2
NMAP Operating System Detection, while a noble attempt, is fundamentally flawed by reality and simply how Internet protocol works. It's right there in their readme When Nmap Guesses Wrong.
– ron
Jan 17 at 16:41
1
Is flipping a coin, head or tails, totally out of question?
– Rui F Ribeiro
Jan 17 at 16:46