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Merge pull request #994 from DimaGolomozy/fix-promisc-mode

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if its promiscuous mode, no need to filter on host as we want to capture traffic not related to this host
This commit is contained in:
Leonid Bugaev
2021-08-16 18:56:22 +03:00
committed by GitHub
parent 42d89903b6 b50ea90cdb
commit 4d82e2f652
1 changed files with 2 additions and 4 deletions
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capture/capture.go
+2 -4
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@@ -218,7 +218,7 @@ func (l *Listener) Filter(ifi pcap.Interface) (filter string) {
filter = portsFilter(l.Transport, "dst", l.ports)
if len(hosts) != 0 {
if len(hosts) != 0 && !l.Promiscuous {
filter = fmt.Sprintf("((%s) and (%s))", filter, hostsFilter("dst", hosts))
} else {
filter = fmt.Sprintf("(%s)", filter)
@@ -227,7 +227,7 @@ func (l *Listener) Filter(ifi pcap.Interface) (filter string) {
if l.trackResponse {
responseFilter := portsFilter(l.Transport, "src", l.ports)
if len(hosts) != 0 {
if len(hosts) != 0 && !l.Promiscuous {
responseFilter = fmt.Sprintf("((%s) and (%s))", responseFilter, hostsFilter("src", hosts))
} else {
responseFilter = fmt.Sprintf("(%s)", responseFilter)
@@ -236,8 +236,6 @@ func (l *Listener) Filter(ifi pcap.Interface) (filter string) {
filter = fmt.Sprintf("%s or %s", filter, responseFilter)
}
// filter = fmt.Sprintf("((((ip[2:2] - ((ip[0]&0xf)<<2)) - ((tcp[12]&0xf0)>>2)) != 0)) and (%s)", filter)
return
}