| 1 |
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| 2 |
named-checkconf |
| 3 |
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| 4 |
ss -tuna4 |
| 5 |
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| 6 |
sudo -u named rndc status |
| 7 |
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| 8 |
dig @127.0.0.1 apple.com -t A | grep -v "^;" |
| 9 |
dig @127.0.0.1 alpha.lab.example.net -t A | grep -v "^;" |
| 10 |
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| 11 |
ss -tna4 | grep :25 |
| 12 |
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| 13 |
postfix check |
| 14 |
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| 15 |
# client |
| 16 |
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| 17 |
nmap -sU -p53 10.18.0.5 |
| 18 |
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| 19 |
dig @10.18.0.5 amazon.com -t A | grep -v "^;" |
| 20 |
dig @10.18.0.5 alpha.lab.example.net -t A | grep -v "^;" |
| 21 |
dig kernel.org -t A | grep -v "^;" |
| 22 |
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| 23 |
nslookup -query=A google.com |
| 24 |
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| 25 |
nmap -p25 10.18.0.5 |
| 26 |
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| 27 |
tail -f /var/log/maillog & |
| 28 |
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