Csdrhrt

Recently I started using my old desktop computer as a server, I installed Ubuntu server 18.04 and it's now connected to my router (Huawei HG532s). I also have a web page (Only for testing) and an SSH server to log in and monitor the server from anywhere (obvious) and the problem comes now:

I have the server connected to the router and the router (ADSL) is connected to the internet. I have set up the router to forward any request that wants to connect via port 80 or 22 to the private IP of the server. And now, whenever someone connects to my web server, the access logs shows me that all petitions are coming from the same IP (My public IP) and same with SSH, whenever I connect to my server, when I type the command who it shows me I'm connected from my public IP.
I know that problem it's because it's my router who is forwarding the packaged and requests but I would like to know if there is any kind of "solution" to this so I'm able to actually know who is establishing a connection to my server.

Thanks in advice and sorry if I misspelled, trying my best to write this correctly.

Output of who command:

alex@ubuntu:~$ who

alex    pts/0     2019-02-07 07:22 (62.37.40.224)

alex    pts/1     2019-02-07 07:22 (62.37.40.224)

Output of the traceroute command to my server's IP from my university’s network:

traceroute to 62.37.40.224 (62.37.40.224), 30 hops max, 60 byte packets

   192.168.212.254 (192.168.212.254)  3.004 ms  2.972 ms  2.947 ms

   172.29.34.1 (172.29.34.1)  7.755 ms  7.736 ms  7.686 ms

   1.red-81-46-16.customer.static.ccgg.telefonica.net (81.46.16.1)  7.662 ms  7.621 ms  7.584 ms

   217.red-217-124-114.static.ccgg.telefonica.net (217.124.114.217)  15.257 ms 217.124.112.37 (217.124.112.37)  20.113 ms 217.124.114.217 (217.124.114.217)  20.108 ms

   * * *

   157.red-80-58-84.staticip.rima-tde.net (80.58.84.157)  14.988 ms  15.931 ms  15.895 ms

   145.red-80-58-97.staticip.rima-tde.net (80.58.97.145)  15.865 ms * *

   80.58.106.58 (80.58.106.58)  14.724 ms  14.712 ms  14.687 ms

   241.red-80-58-88.staticip.rima-tde.net (80.58.88.241)  14.661 ms  14.635 ms  14.615 ms

  10.21.0.1 (10.21.0.1)  14.565 ms  14.475 ms  20.228 ms

  10.21.0.2 (10.21.0.2)  20.180 ms  20.143 ms  20.111 ms

  172.27.111.22 (172.27.111.22)  15.212 ms  15.175 ms  15.005 ms

  172.27.111.51 (172.27.111.51)  14.931 ms  14.818 ms  14.807 ms

  172.27.111.126 (172.27.111.126)  14.797 ms  14.776 ms  14.762 ms

  172.27.111.10 (172.27.111.10)  19.592 ms  16.708 ms  16.622 ms

  193.152.56.1 (193.152.56.1)  19.503 ms  19.474 ms  19.407 ms

  80.58.72.149 (80.58.72.149)  19.399 ms  19.356 ms  19.292 ms

  * * *

  * * *

  216.184.113.180 (216.184.113.180)  23.230 ms  17.892 ms *

  * * *

  * * *

  * 193.251.247.14 (193.251.247.14)  16.104 ms *

  * * *

  * * *

  * * *

  * * *

  * * *

  * * *

  * * *

Apache2 log after access with my 4G IP:

90.174.4.159 - - [07/Feb/2019:10:20:24 +0000] "GET / HTTP/1.1" 200 774 "-" "Mozilla/5.0 (iPhone; CPU iPhone OS 12_1_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/12.0 Mobile/15E148 Safari/604.1"

Command who output after logging in with my 4G IP:

alex     pts/0        2019-02-07 09:35 (192.168.1.254)

alex     pts/1        2019-02-07 09:16 (62.37.40.224)

alex     pts/2        2019-02-07 10:19 (62.37.40.224)

alex     pts/3        2019-02-07 10:44 (62.37.40.224)

If I understand your question correctly, this will be a problem with the way your router is handling inbound connections. It appears to be proxying them or translating the source address as well as the destination - when it.should.only be doing the latter.