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Add GPRS Tunnelling Protocol (GTPv1) decapsulation.

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This currently supports automatic decapsulation of GTP-U packets on
UDP port 2152.

The GTPv1 headers for such tunnels can be inspected by handling the
"gtpv1_g_pdu_packet" event, which has a parameter of type "gtpv1_hdr".

Analyzer and test cases are derived from submissions by Carsten Langer.

Addresses #690.
This commit is contained in:
Jon Siwek 2012-10-19 14:02:35 -05:00
parent 2915e04db4
commit 9edbf3e53c
52 changed files with 670 additions and 2 deletions
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5
scripts/base/frameworks/tunnels/main.bro
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@ -88,7 +88,10 @@ redef dpd_config += { [ANALYZER_AYIYA] = [$ports = ayiya_ports] };
const teredo_ports = { 3544/udp };
redef dpd_config += { [ANALYZER_TEREDO] = [$ports = teredo_ports] };
redef likely_server_ports += { ayiya_ports, teredo_ports };
const gtpv1u_ports = { 2152/udp };
redef dpd_config += { [ANALYZER_GTPV1] = [$ports = gtpv1u_ports] };
redef likely_server_ports += { ayiya_ports, teredo_ports, gtpv1u_ports };
event bro_init() &priority=5
{