Convert Domain-String to Hex

NewLegend · 06-18-2014, 11:57 AM

Hi,
Is there any way to convert domain-string to hex.

I looking to drop string by iptables for DNS service, for example I wanna drop this domain "luse0.com", What's the command to convert string to hex and what about this numbers in the rule below: 34 and 80

iptables --insert INPUT -p udp --dport 53 -m string --from 34 --to 80 --algo bm --hex-string '|056c7573653003636f6d00|' -j DROP -m comment --comment "DROP DNS Q luse0.com"

NewLegend · 06-19-2014, 04:41 AM

Any ideas

TenTenths · 06-19-2014, 06:40 AM

Quote:

Originally Posted by NewLegend

What's the command to convert string to hex

Code:

man od

NewLegend · 06-22-2014, 02:01 AM

Hi,
Is od command will convert the domain ?

TenTenths · 06-22-2014, 02:16 AM

od can convert text to hex, go read the man pages