On 24/10/2018 16.22, Syafril Hermansyah ([email protected]) wrote: > On 24/10/18 15.37, Thariq Basyir ([email protected]) wrote: >>> Di firewall (dan proxy antivirus) apakah outbound udp/tcp port 53 sudah >>> di open/allow jika trafficnya berasal dari IP MDaemon server? >> >> cara cek di sisi server kami bagaimana pak? >> karena sekarang sisi firewall bukan langsung kami yang pegang > > > tcp/udp port agak sudah dicheck melalui browser, karena umumnya sengaj ^^^^^^^ 53
> diblock oleh browser atau server check online. Bisa dioba pakai browser bukan firefox http://portquiz.net:53 > Bisa gunakan nmap tool > > https://nmap.org/book/inst-windows.html Contoh command untuk check # nmap -sU -p 53 209.244.0.3 Starting Nmap 7.60 ( https://nmap.org ) at 2018-10-24 20:26 WIB Nmap scan report for resolver1.level3.net (209.244.0.3) Host is up (0.017s latency). PORT STATE SERVICE 53/udp open|filtered domain Nmap done: 1 IP address (1 host up) scanned in 0.57 seconds UDP port 53 difilter oleh firewal/ISP. kalau yang tidak difilter seperti ini hasilnya # nmap -sU -p 53 209.244.0.3 Starting Nmap 6.40 ( http://nmap.org ) at 2018-10-24 20:29 WIB Nmap scan report for resolver1.level3.net (209.244.0.3) Host is up (0.016s latency). PORT STATE SERVICE 53/udp open domain Nmap done: 1 IP address (1 host up) scanned in 5.84 seconds # nmap -sT -p 53 8.8.8.8 Starting Nmap 7.60 ( https://nmap.org ) at 2018-10-24 20:32 WIB Nmap scan report for google-public-dns-a.google.com (8.8.8.8) Host is up (0.017s latency). PORT STATE SERVICE 53/tcp open domain Nmap done: 1 IP address (1 host up) scanned in 0.34 seconds # nmap -sT -p 53 8.8.8.8 Starting Nmap 6.40 ( http://nmap.org ) at 2018-10-24 20:32 WIB Nmap scan report for google-public-dns-a.google.com (8.8.8.8) Host is up (0.014s latency). PORT STATE SERVICE 53/tcp open domain Nmap done: 1 IP address (1 host up) scanned in 6.25 seconds TCP port 53 tidak difilter. -- syafril ------- Syafril Hermansyah MDaemon-L Moderators, MDaemon 18.5.1-64 Beta A Harap tidak cc: atau kirim ke private mail untuk masalah MDaemon. Learning is not attained by chance, it must be sought for with ardour and attended to with diligence. --- Abigail Adams -- --[mdaemon-l]---------------------------------------------------------- Milis ini untuk Diskusi antar pengguna MDaemon Mail Server di Indonesia Netiket: https://wiki.openstack.org/wiki/MailingListEtiquette Arsip: http://mdaemon-l.dutaint.com Dokumentasi : http://mdaemon.dutaint.co.id Berlangganan: Kirim mail ke [email protected] Henti Langgan: Kirim mail ke [email protected] Versi terakhir MD 18.5.0, SG 5.5.0
