Re: Testig port and only getting reponses with message showing ttl 252?

tito via busybox <[email protected]>
Newsgroups gmane.linux.busybox
Message-ID <20260322212100.7ecdbb90@devuan>
On Mon, 23 Mar 2026 02:32:55 +1000
"Michael D. Setzer II via busybox" <[email protected]> wrote:

> nmap busybox.net git.busybox.net busybox.osuosl.org -Pn -p 80 
> --reason | grep ' '
> 
> 
> ./nmapbusy.sh 
> Starting Nmap 7.92 ( https://nmap.org ) at 2026-03-23 02:24 ChST
> Nmap scan report for busybox.net (140.211.167.122)
> Host is up, received user-set (0.097s latency).
> rDNS record for 140.211.167.122: busybox.osuosl.org
> PORT   STATE SERVICE REASON
> 80/tcp open  http    syn-ack ttl 252
> Nmap scan report for git.busybox.net (140.211.167.122)
> Host is up, received user-set (0.094s latency).
> rDNS record for 140.211.167.122: busybox.osuosl.org
> PORT   STATE SERVICE REASON
> 80/tcp open  http    syn-ack ttl 252
> Nmap scan report for busybox.osuosl.org (140.211.167.122)
> Host is up, received user-set.
> Other addresses for busybox.osuosl.org (not scanned): 
> 2605:bc80:3010:2:a800:ff:fe56:4880
> PORT   STATE    SERVICE REASON
> 80/tcp filtered http    no-response
> Nmap done: 3 IP addresses (3 hosts up) scanned in 2.33 seconds
> 
> Sometimes all show no-response, and but sometimes have all show 
> the 252 work, but then another run gets no response.
> 
> Not sure what would cause this tll issue?

Something that doesn't allow a high number of concurrent connections?

> My system has default ttl set to 64, but changed it to 255, but still 
> get random results?
> 
> Perhaps this might tell someone something.
> 
> Did just have a random git clone just work?
> 
> +------------------------------------------------------------+
>  Michael D. Setzer II - Computer Science Instructor (Retired)     
>  mailto:[email protected]                            
>  mailto:[email protected]
>  mailto:[email protected]
>  Guam - Where America's Day Begins                        
>  G4L Disk Imaging Project maintainer 
>  http://sourceforge.net/projects/g4l/
> +------------------------------------------------------------+
> 
> 
> 
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