* libiptc - 'string' match module - --hex-string
@ 2014-06-19 12:38 Sourabh Nanoti
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From: Sourabh Nanoti @ 2014-06-19 12:38 UTC (permalink / raw)
To: netfilter
Hello,
I wanted to know how to have a rule in iptables that uses the –hex-string
pattern matching module via libiptc.
Following are my xt_string_info structure:
1)
strcpy(strinfo->algo,"bm");
strcpy(strinfo->pattern,"|05010001|\\");
strinfo->from_offset = 32;
strinfo->to_offset = 36;
strinfo->patlen = 11;
When I do iptables -L I get the following:
STRING match "|7c30353031303030317c5c|" ALGO name bm FROM 32 TO 36
2)
strcpy(strinfo->algo,"bm");
strcpy(strinfo->pattern,"05010001\\");
strinfo->from_offset = 32;
strinfo->to_offset = 36;
strinfo->patlen = 9;
When I do iptables -L I get the following:
STRING match "|30353031303030315c|" ALGO name bm FROM 32 TO 36
Both seem incorrect. What am I missing here ?
Thanks
Sourabh
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