LINUX_SRV Telegram 584
Проверяем доступность портов с использованием nmap/netcat/telnet/nc

Доступность tcp-порта
netcat
netcat [options] host port
сканер портов:
netcat -z -v domain.com 1-1000

запустить netcat на хосте и слушать на tcp порте 4444:
netcat -l 4444

а на другой машине проверить подключение к netcat, запущенному на другом хосте:
netcat domain.com 4444

nc
nc -vt <ip> <port>

telnet
telnet <ip> <port>

nmap
порт 25 tcp: nmap -p25 11.11.11.11

Доступность udp-порта
netcat
netcat -u host port

nc
nc -vu <ip> <port>

nmap
доступность порта udp 53: nmap -sU -p U:53 11.1.11.12
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Проверяем доступность портов с использованием nmap/netcat/telnet/nc

Доступность tcp-порта
netcat
netcat [options] host port
сканер портов:
netcat -z -v domain.com 1-1000

запустить netcat на хосте и слушать на tcp порте 4444:
netcat -l 4444

а на другой машине проверить подключение к netcat, запущенному на другом хосте:
netcat domain.com 4444

nc
nc -vt <ip> <port>

telnet
telnet <ip> <port>

nmap
порт 25 tcp: nmap -p25 11.11.11.11

Доступность udp-порта
netcat
netcat -u host port

nc
nc -vu <ip> <port>

nmap
доступность порта udp 53: nmap -sU -p U:53 11.1.11.12

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Other crimes that the SUCK Channel incited under Ng’s watch included using corrosive chemicals to make explosives and causing grievous bodily harm with intent. The court also found Ng responsible for calling on people to assist protesters who clashed violently with police at several universities in November 2019. As of Thursday, the SUCK Channel had 34,146 subscribers, with only one message dated August 28, 2020. It was an announcement stating that police had removed all posts on the channel because its content “contravenes the laws of Hong Kong.” To edit your name or bio, click the Menu icon and select “Manage Channel.” Choose quality over quantity. Remember that one high-quality post is better than five short publications of questionable value. The court said the defendant had also incited people to commit public nuisance, with messages calling on them to take part in rallies and demonstrations including at Hong Kong International Airport, to block roads and to paralyse the public transportation system. Various forms of protest promoted on the messaging platform included general strikes, lunchtime protests and silent sit-ins.
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