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I have Windows 10 laptop and connected to office Wi-Fo. I am not able to SSH to my company’s AWS EC2 instance so admin asked me the IP address of my laptop.

I did ipconfig and it returned me two ipv4 addresses.

  • Default switch - Autoconfiguraton IPv4 address = 169.254.10.128
  • Wireless LAN IPv4 address = 139.49.123.210

Which IP should I give to him?

Giacomo1968
  • 58,727

3 Answers3

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139.49.123.210 is your IP address.

169.254.10.128 is a non routable IP.

As explained in the IETF’s “Special Use IPv4 Addresses”:

169.254.0.0/16 - This is the "link local" block. As described in [RFC3927], it is allocated for communication between hosts on a single link. Hosts obtain these addresses by auto-configuration, such as when a DHCP server cannot be found.

Giacomo1968
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yagmoth555
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0

As yagmoth555 answered most likely 139.49.123.210, but depending on how you're effectively connected to the internet neither IP-address may be what needs to be whitelisted.

If there is NAT the effective IP-address won't show with ipconfig.

Also check what ip-address appears as your public IP-address with a "what's my ip-address" online service such as for instance https://ipconfig.io

HBruijn
  • 1,346
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when you type ipconfig you will get number of list for the ip address.

check for the

Wireless LAN adapter Wi-Fi:

Connection-specific DNS Suffix . : IPv6 Address. . . . . . . . . . . : Temporary IPv6 Address. . . . . . : Link-local IPv6 Address . . . . . : IPv4 Address. . . . . . . . . . . : Subnet Mask . . . . . . . . . . . : Default Gateway . . . . . . . . . :

here IPv4 Address line contains your ip.

Vinod
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