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Add a UDP payload for DNS-based service discovery on 5353/udp, zeroconf.

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david
2009-08-14 19:37:03 +00:00
parent 2bd2bf87cc
commit 0698cb186c
1 changed files with 14 additions and 0 deletions
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14
payload.cc
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@@ -138,6 +138,17 @@ static const char payload_rip[] =
"\001\001\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
"\000\000\000\000\000\000\000\020";
/* DNS Service Discovery (DNS-SD) service query, as used in Zeroconf.
Transaction ID 0x0000, flags 0x0000, 1 question: PTR query for
_services._dns-sd._udp.local. If the remote host supports DNS-SD it will send
back a list of all its services. This is the same as a packet capture of
dns-sd -B _services._dns-sd._udp .
See section 9 of
http://files.dns-sd.org/draft-cheshire-dnsext-dns-sd.txt. */
static const char payload_dns_sd[] =
"\000\000\000\000\000\001\000\000\000\000\000\000"
"\011_services\007_dns-sd\004_udp\005local\000\000\014\000\001";
/*
This one trips a Snort rule with SID 2049 ("MS-SQL ping attempt").
static const char payload_Sqlping[] = "\002";
@@ -196,6 +207,9 @@ const char *udp_port2payload(u16 dport, size_t *length){
SET_PAYLOAD(payload_Sqlping);
break;
*/
case 5353:
SET_PAYLOAD(payload_dns_sd);
break;
default:
SET_PAYLOAD(payload_null);
break;