rust_fast_port_scanner returns all ports

[sylvain101010]

Hello @claudiociardelli , I tested rust_fast_port_scanner today. Not sure if this is an issue or a lack of understanding from me: I run the program with the IP address of my linux server to check what ports might be listening to requests. so I ran the command like this:

./target/release/rust_fast_port_scanner 192.168.1.70

I will not print the result here, But I get 1002 rows in the result so, all the ports tested. From @claudiociardelli (https://github.com/skerkour/bloom/issues/72)

However when I check what ports are listening as per https://www.techrepublic.com/article/how-to-locate-and-close-an-open-port-in-linux/ I only see 6 open ports

coco@dev01:~/projects/kerkour.com/2021/rust_fast_port_scanner$ sudo ss -tulwn | grep LISTEN
tcp   LISTEN 0      511                            127.0.0.1:41683      0.0.0.0:*

tcp   LISTEN 0      4096                       127.0.0.53%lo:53         0.0.0.0:*

tcp   LISTEN 0      128                              0.0.0.0:22         0.0.0.0:*

tcp   LISTEN 0      100                              0.0.0.0:25         0.0.0.0:*

tcp   LISTEN 0      100                                 [::]:25            [::]:*

[sylvain101010]

Thank you for reaching out @claudiociardelli,

i think it should come from your firewall. What does return

$ nmap -T4 -sT 192.168.1.70

?

Also what is the operating system of your server?

[sylvain101010]

Or it may come from an actual bug, that https://github.com/skerkour/kerkour.com/commit/f1ea1ea6f6996b3ccc99fbeee4106523b10db7e4 should have fixed.

Could you tell me if the result is similar with the new version

[claudiociardelli]

NAME="Ubuntu" VERSION="20.04.3 LTS (Focal Fossa)"

I applied the fix, but still not returning all ports. Nmap tells me this

~/projects/kerkour.com/2021/rust_fast_port_scanner$ nmap -T4 -sT 192.168.1.70
Starting Nmap 7.80 ( https://nmap.org ) at 2021-10-16 20:31 UTC
Nmap scan report for dev01 (192.168.1.70)
Host is up (0.00013s latency).
Not shown: 998 closed ports
PORT   STATE SERVICE
22/tcp open  ssh
25/tcp open  smtp

Nmap done: 1 IP address (1 host up) scanned in 0.25 seconds

[sylvain101010]

Thanks for the feedback.

What does return https://github.com/skerkour/black-hat-rust/tree/main/ch_02/tricoder

cargo run -- 192.168.1.70

?

-------- Original Message -------- On Oct 16, 2021, 22:35, claudiociardelli wrote:

NAME="Ubuntu" VERSION="20.04.3 LTS (Focal Fossa)"

I applied the fix, but still not returning all ports. Nmap tells me this

~/projects/kerkour.com/2021/rust_fast_port_scanner$ nmap -T4 -sT 192.168.1.70 Starting Nmap 7.80 ( https://nmap.org ) at 2021-10-16 20:31 UTC Nmap scan report for dev01 (192.168.1.70) Host is up (0.00013s latency). Not shown: 998 closed ports PORT STATE SERVICE 22/tcp open ssh 25/tcp open smtp

Nmap done: 1 IP address (1 host up) scanned in 0.25 seconds

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[claudiociardelli]

Sylvain, tricorder and rust_fast_port_scan now work correcty. I wonder if I had not retested correctly yesterday after refreshing my local repository. Thx for your help

[sylvain101010]

I'm glad to hear that :)

Have a nice day