Daniele_Sunrise I’m using the most widely used software to perform the port scan, which is called nmap. Please note that I have opened ports UDP 20715 and TCP 443 , as per my decision.
If you perform an “Intense Scan plus UDP” his will be the result:
intense scan plus UDP
Command: nmap -sS -sU -T4 -A -v x.x.x.x
NSE: Loaded 155 scripts for scanning.
[…]
Initiating Ping Scan at 01:09
Scanning aaa.bbb.ccc.ddd [4 ports]
Completed Ping Scan at 01:09, 0.13s elapsed (1 total hosts)
Initiating Parallel DNS resolution of 1 host. at 01:09
Completed Parallel DNS resolution of 1 host. at 01:09, 0.09s elapsed
Initiating SYN Stealth Scan at 01:09
Scanning xdsl-aaa.bbb.ccc.ddd.adslplus.ch (aaa.bbb.ccc.ddd) [1000 ports]
Discovered open port 80/tcp on aaa.bbb.ccc.ddd
Discovered open port 8080/tcp on aaa.bbb.ccc.ddd
Discovered open port 443/tcp on aaa.bbb.ccc.ddd
Completed SYN Stealth Scan at 01:09, 10.67s elapsed (1000 total ports)
Initiating UDP Scan at 01:09
Scanning xdsl-aaa.bbb.ccc.ddd.adslplus.ch (aaa.bbb.ccc.ddd) [1000 ports]
UDP Scan Timing: About 6.15% done; ETC: 01:18 (0:07:53 remaining)
Increasing send delay for aaa.bbb.ccc.ddd from 0 to 50 due to 11 out of 11 dropped probes since last increase.
Increasing send delay for aaa.bbb.ccc.ddd from 50 to 100 due to 11 out of 11 dropped probes since last increase.
Increasing send delay for aaa.bbb.ccc.ddd from 100 to 200 due to 11 out of 11 dropped probes since last increase.
Increasing send delay for aaa.bbb.ccc.ddd from 200 to 400 due to 11 out of 11 dropped probes since last increase.
Increasing send delay for aaa.bbb.ccc.ddd from 400 to 800 due to 11 out of 11 dropped probes since last increase.
UDP Scan Timing: About 30.00% done; ETC: 01:21 (0:08:19 remaining)
UDP Scan Timing: About 32.35% done; ETC: 01:22 (0:08:55 remaining)
Increasing send delay for aaa.bbb.ccc.ddd from 800 to 1000 due to 11 out of 11 dropped probes since last increase.
UDP Scan Timing: About 35.15% done; ETC: 01:24 (0:09:37 remaining)
UDP Scan Timing: About 38.85% done; ETC: 01:26 (0:10:22 remaining)
Discovered open port 500/udp on aaa.bbb.ccc.ddd
UDP Scan Timing: About 60.65% done; ETC: 01:33 (0:09:30 remaining)
UDP Scan Timing: About 67.50% done; ETC: 01:35 (0:08:17 remaining)
UDP Scan Timing: About 73.60% done; ETC: 01:36 (0:06:59 remaining)
UDP Scan Timing: About 79.20% done; ETC: 01:36 (0:05:40 remaining)
UDP Scan Timing: About 84.65% done; ETC: 01:37 (0:04:16 remaining)
UDP Scan Timing: About 89.95% done; ETC: 01:38 (0:02:51 remaining)
UDP Scan Timing: About 95.15% done; ETC: 01:38 (0:01:24 remaining)
Discovered open port 27015/udp on aaa.bbb.ccc.ddd
Completed UDP Scan at 01:38, 1754.51s elapsed (1000 total ports)