On 19/04/2021 03:18, Jack Craig wrote:
On Fri, Apr 16, 2021 at 12:52 PM Doug H. <fedoraproject....@wombatz.com <mailto:fedoraproject....@wombatz.com>> wrote: On Fri, Apr 16, 2021, at 10:56 AM, Ed Greshko wrote: > On 16/04/2021 17:19, Ed Greshko wrote: > > On 16/04/2021 10:35, Jack Craig wrote: > >> First I get my static IP from AT&T actually a block of eight addresses of which only the first do they agree to pass through. > >> > > > > BTW, if you are hosting the DNS server and if your DNS server has the IP address of 108.220.213.121 then > > this could be a problem. * * *would you expand on this comment? i think this is an issue,... thx..*
You removed the most important part of my comment. Which was.... PORT STATE SERVICE VERSION 53/udp closed domain 53/tcp closed domain This mean you don't have a DNS server (bind, I assume) listening on the standard port 53 on the 108.220.213.121 interface. That means that no system outside of your internals (10.0.0.x) can query your DNS server. If I "telnet" to port 53 (tcp) to my ISP's name server... [egreshko@meimei ~]$ telnet 168.95.1.1 53 Trying 168.95.1.1... Connected to 168.95.1.1. Escape character is '^]'. ^] telnet> close Connection closed. Yours? [egreshko@meimei ~]$ telnet 108.220.213.121 53 Trying 108.220.213.121... telnet: connect to address 108.220.213.121: Connection refused Also note, that if I run "nmap -A -T4 -p53 168.95.1.1 53" I get PORT STATE SERVICE VERSION 53/tcp open domain (generic dns response: NOTIMP) | fingerprint-strings: | DNSVersionBindReqTCP: | version |_ bind Or if I run "nmap -A -T4 -p53 -sU 168.95.1.1" a UDP scan PORT STATE SERVICE VERSION 53/udp open domain (generic dns response: NOTIMP) |_dns-recursion: Recursion appears to be enabled | fingerprint-strings: | DNSVersionBindReq: | version | bind | NBTStat: | CKAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA |_ root-servers These nmap command need to be run from the outside. I think there are websites which allow you to run nmap against your own systems. -- Remind me to ignore comments which aren't germane to the thread. _______________________________________________ users mailing list -- users@lists.fedoraproject.org To unsubscribe send an email to users-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@lists.fedoraproject.org Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure
