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Is it possible to see my external IP without making an outbound web request?
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If your connection is NAT'ed, is it possible to see your external IP without making an outbound web request?
Any OS (Windows, Linux, etc.) is fine.
networking nat ip-address
edited 1 hour ago
Twisty Impersonator
16.4k126090
asked 4 hours ago
Axel Persinger
213
add a comment |Â
up vote
2
down vote
favorite
If your connection is NAT'ed, is it possible to see your external IP without making an outbound web request?
Any OS (Windows, Linux, etc.) is fine.
networking nat ip-address
edited 1 hour ago
Twisty Impersonator
16.4k126090
asked 4 hours ago
Axel Persinger
213
1
Are you only trying to avoid HTTP, or are you trying to avoid sending any outgoing traffic at all? The only universal solutions involve sending some kind of outgoing traffic, but it doesn't have to be HTTP.
– Spiff
3 hours ago
This was more of just a hypothetical, I didn't want to make any outbound traffic at all.
– Axel Persinger
3 hours ago
Are you saying that your network/router is behind a Enterprise grade NAT setup (ie. it is getting a private IP address from your ISP)? If so, there is no way I have think of that you can find the public IP address without something reaching out to the public network and essentially "looking back" like whatsmyip.com or similar services.
– acejavelin
3 hours ago
add a comment |Â
up vote
2
down vote
favorite
up vote
2
down vote
favorite
If your connection is NAT'ed, is it possible to see your external IP without making an outbound web request?
Any OS (Windows, Linux, etc.) is fine.
networking nat ip-address
edited 1 hour ago
Twisty Impersonator
16.4k126090
asked 4 hours ago
Axel Persinger
213
If your connection is NAT'ed, is it possible to see your external IP without making an outbound web request?
Any OS (Windows, Linux, etc.) is fine.
networking nat ip-address
networking nat ip-address
edited 1 hour ago
Twisty Impersonator
16.4k126090
asked 4 hours ago
Axel Persinger
213
edited 1 hour ago
Twisty Impersonator
16.4k126090
asked 4 hours ago
Axel Persinger
213
edited 1 hour ago
Twisty Impersonator
16.4k126090
edited 1 hour ago
Twisty Impersonator
16.4k126090
edited 1 hour ago
Twisty Impersonator
16.4k126090
16.4k126090
asked 4 hours ago
Axel Persinger
213
asked 4 hours ago
Axel Persinger
213
asked 4 hours ago
Axel Persinger
213
213
1
Are you only trying to avoid HTTP, or are you trying to avoid sending any outgoing traffic at all? The only universal solutions involve sending some kind of outgoing traffic, but it doesn't have to be HTTP.
– Spiff
3 hours ago
This was more of just a hypothetical, I didn't want to make any outbound traffic at all.
– Axel Persinger
3 hours ago
Are you saying that your network/router is behind a Enterprise grade NAT setup (ie. it is getting a private IP address from your ISP)? If so, there is no way I have think of that you can find the public IP address without something reaching out to the public network and essentially "looking back" like whatsmyip.com or similar services.
– acejavelin
3 hours ago
add a comment |Â
1
Are you only trying to avoid HTTP, or are you trying to avoid sending any outgoing traffic at all? The only universal solutions involve sending some kind of outgoing traffic, but it doesn't have to be HTTP.
– Spiff
3 hours ago
This was more of just a hypothetical, I didn't want to make any outbound traffic at all.
– Axel Persinger
3 hours ago
Are you saying that your network/router is behind a Enterprise grade NAT setup (ie. it is getting a private IP address from your ISP)? If so, there is no way I have think of that you can find the public IP address without something reaching out to the public network and essentially "looking back" like whatsmyip.com or similar services.
– acejavelin
3 hours ago
1
1
Are you only trying to avoid HTTP, or are you trying to avoid sending any outgoing traffic at all? The only universal solutions involve sending some kind of outgoing traffic, but it doesn't have to be HTTP.
– Spiff
3 hours ago
Are you only trying to avoid HTTP, or are you trying to avoid sending any outgoing traffic at all? The only universal solutions involve sending some kind of outgoing traffic, but it doesn't have to be HTTP.
– Spiff
3 hours ago
This was more of just a hypothetical, I didn't want to make any outbound traffic at all.
– Axel Persinger
3 hours ago
This was more of just a hypothetical, I didn't want to make any outbound traffic at all.
– Axel Persinger
3 hours ago
Are you saying that your network/router is behind a Enterprise grade NAT setup (ie. it is getting a private IP address from your ISP)? If so, there is no way I have think of that you can find the public IP address without something reaching out to the public network and essentially "looking back" like whatsmyip.com or similar services.
– acejavelin
3 hours ago
Are you saying that your network/router is behind a Enterprise grade NAT setup (ie. it is getting a private IP address from your ISP)? If so, there is no way I have think of that you can find the public IP address without something reaching out to the public network and essentially "looking back" like whatsmyip.com or similar services.
– acejavelin
3 hours ago
add a comment |Â
2 Answers
2
active
oldest
votes
up vote
3
down vote
There are a few ways that work with some NATs but nothing that's guaranteed to work everywhere.
I believe uPnP, NAT-PMP, and PCP (Universal Plug And Play, NAT Port Mapping Protocol, and the Port Control Protocol) all have ways to ask a compliant NAT gateway what the public address is, but not all NATs support these protocols. Support is more common in home gateway routers than in corporate or carrier-grade NAT solutions.
When you find yourself behind a NAT, the only sure way to see what public IP address it is translating your traffic into is to send some outgoing traffic to some public host that will report back, in a way the NAT won't translate, what address your traffic appeared to come from. Using a web based service is one way, but you could also do it by, say, SSHing into a cloud server instance and seeing where sshd says your SSH session is coming from.
answered 3 hours ago
Spiff
75.1k10114156
add a comment |Â
up vote
1
down vote
If your computer is behind NAT, it is possible for you to see the external IP
of your router, but you need administrative access to the router.
The router knows your external IP address, so by accessing its configuration
page you can find that IP address.
Any other way will require making an external Web request.
answered 3 hours ago
harrymc
244k10254537
This seems like it's answering a different question than OP is asking.
– Spiff
3 hours ago
@Spiff: I have re-written my answer. A comment would have been enough to signal that misunderstanding.
– harrymc
3 hours ago
add a comment |Â
2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
3
down vote
There are a few ways that work with some NATs but nothing that's guaranteed to work everywhere.
I believe uPnP, NAT-PMP, and PCP (Universal Plug And Play, NAT Port Mapping Protocol, and the Port Control Protocol) all have ways to ask a compliant NAT gateway what the public address is, but not all NATs support these protocols. Support is more common in home gateway routers than in corporate or carrier-grade NAT solutions.
When you find yourself behind a NAT, the only sure way to see what public IP address it is translating your traffic into is to send some outgoing traffic to some public host that will report back, in a way the NAT won't translate, what address your traffic appeared to come from. Using a web based service is one way, but you could also do it by, say, SSHing into a cloud server instance and seeing where sshd says your SSH session is coming from.
answered 3 hours ago
Spiff
75.1k10114156
add a comment |Â
up vote
3
down vote
There are a few ways that work with some NATs but nothing that's guaranteed to work everywhere.
I believe uPnP, NAT-PMP, and PCP (Universal Plug And Play, NAT Port Mapping Protocol, and the Port Control Protocol) all have ways to ask a compliant NAT gateway what the public address is, but not all NATs support these protocols. Support is more common in home gateway routers than in corporate or carrier-grade NAT solutions.
When you find yourself behind a NAT, the only sure way to see what public IP address it is translating your traffic into is to send some outgoing traffic to some public host that will report back, in a way the NAT won't translate, what address your traffic appeared to come from. Using a web based service is one way, but you could also do it by, say, SSHing into a cloud server instance and seeing where sshd says your SSH session is coming from.
answered 3 hours ago
Spiff
75.1k10114156
add a comment |Â
up vote
3
down vote
up vote
3
down vote
There are a few ways that work with some NATs but nothing that's guaranteed to work everywhere.
I believe uPnP, NAT-PMP, and PCP (Universal Plug And Play, NAT Port Mapping Protocol, and the Port Control Protocol) all have ways to ask a compliant NAT gateway what the public address is, but not all NATs support these protocols. Support is more common in home gateway routers than in corporate or carrier-grade NAT solutions.
When you find yourself behind a NAT, the only sure way to see what public IP address it is translating your traffic into is to send some outgoing traffic to some public host that will report back, in a way the NAT won't translate, what address your traffic appeared to come from. Using a web based service is one way, but you could also do it by, say, SSHing into a cloud server instance and seeing where sshd says your SSH session is coming from.
answered 3 hours ago
Spiff
75.1k10114156
There are a few ways that work with some NATs but nothing that's guaranteed to work everywhere.
I believe uPnP, NAT-PMP, and PCP (Universal Plug And Play, NAT Port Mapping Protocol, and the Port Control Protocol) all have ways to ask a compliant NAT gateway what the public address is, but not all NATs support these protocols. Support is more common in home gateway routers than in corporate or carrier-grade NAT solutions.
When you find yourself behind a NAT, the only sure way to see what public IP address it is translating your traffic into is to send some outgoing traffic to some public host that will report back, in a way the NAT won't translate, what address your traffic appeared to come from. Using a web based service is one way, but you could also do it by, say, SSHing into a cloud server instance and seeing where sshd says your SSH session is coming from.
answered 3 hours ago
Spiff
75.1k10114156
answered 3 hours ago
Spiff
75.1k10114156
answered 3 hours ago
Spiff
75.1k10114156
answered 3 hours ago
Spiff
75.1k10114156
75.1k10114156
add a comment |Â
add a comment |Â
up vote
1
down vote
If your computer is behind NAT, it is possible for you to see the external IP
of your router, but you need administrative access to the router.
The router knows your external IP address, so by accessing its configuration
page you can find that IP address.
Any other way will require making an external Web request.
answered 3 hours ago
harrymc
244k10254537
This seems like it's answering a different question than OP is asking.
– Spiff
3 hours ago
@Spiff: I have re-written my answer. A comment would have been enough to signal that misunderstanding.
– harrymc
3 hours ago
add a comment |Â
up vote
1
down vote
If your computer is behind NAT, it is possible for you to see the external IP
of your router, but you need administrative access to the router.
The router knows your external IP address, so by accessing its configuration
page you can find that IP address.
Any other way will require making an external Web request.
answered 3 hours ago
harrymc
244k10254537
This seems like it's answering a different question than OP is asking.
– Spiff
3 hours ago
@Spiff: I have re-written my answer. A comment would have been enough to signal that misunderstanding.
– harrymc
3 hours ago
add a comment |Â
up vote
1
down vote
up vote
1
down vote
If your computer is behind NAT, it is possible for you to see the external IP
of your router, but you need administrative access to the router.
The router knows your external IP address, so by accessing its configuration
page you can find that IP address.
Any other way will require making an external Web request.
answered 3 hours ago
harrymc
244k10254537
If your computer is behind NAT, it is possible for you to see the external IP
of your router, but you need administrative access to the router.
The router knows your external IP address, so by accessing its configuration
page you can find that IP address.
Any other way will require making an external Web request.
answered 3 hours ago
harrymc
244k10254537
edited 3 hours ago
answered 3 hours ago
harrymc
244k10254537
answered 3 hours ago
harrymc
244k10254537
answered 3 hours ago
harrymc
244k10254537
244k10254537
This seems like it's answering a different question than OP is asking.
– Spiff
3 hours ago
@Spiff: I have re-written my answer. A comment would have been enough to signal that misunderstanding.
– harrymc
3 hours ago
add a comment |Â
This seems like it's answering a different question than OP is asking.
– Spiff
3 hours ago
@Spiff: I have re-written my answer. A comment would have been enough to signal that misunderstanding.
– harrymc
3 hours ago
This seems like it's answering a different question than OP is asking.
– Spiff
3 hours ago
This seems like it's answering a different question than OP is asking.
– Spiff
3 hours ago
@Spiff: I have re-written my answer. A comment would have been enough to signal that misunderstanding.
– harrymc
3 hours ago
@Spiff: I have re-written my answer. A comment would have been enough to signal that misunderstanding.
– harrymc
3 hours ago
add a comment |Â
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1
Are you only trying to avoid HTTP, or are you trying to avoid sending any outgoing traffic at all? The only universal solutions involve sending some kind of outgoing traffic, but it doesn't have to be HTTP.
– Spiff
3 hours ago
This was more of just a hypothetical, I didn't want to make any outbound traffic at all.
– Axel Persinger
3 hours ago
Are you saying that your network/router is behind a Enterprise grade NAT setup (ie. it is getting a private IP address from your ISP)? If so, there is no way I have think of that you can find the public IP address without something reaching out to the public network and essentially "looking back" like whatsmyip.com or similar services.
– acejavelin
3 hours ago