CodeCow/PCAPdroid
1
0
Fork 0
mirror of https://github.com/emanuele-f/PCAPdroid.git synced 2026-07-03 21:21:12 +08:00
Code Issues Actions 4 Packages Projects Releases Wiki Activity

Fix TCP connections spam to VPN IP port 853

Browse Source 
Fixes #313
This commit is contained in:
emanuele-f 2023-04-23 17:38:19 +02:00
parent 532dd2c2a6
commit b9ee20fca4
1 changed files with 7 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
app/src/main/jni/core/capture_vpn.c
View File

@ -522,6 +522,13 @@ int run_vpn(pcapdroid_t *pd) {
goto housekeeping;
}
bool is_internal_dns = pd->vpn.ipv4.enabled && (pkt.tuple.ipver == 4) && (pkt.tuple.dst_ip.ip4 == pd->vpn.ipv4.internal_dns);
if(is_internal_dns && ntohs(pkt.tuple.dst_port) == 853) {
// accepting this packet could result in multiple TCP connections being spammed
log_d("discarding private DNS packet directed to internal DNS");
goto housekeeping;
}
if(((pkt.tuple.ipver == 6) && !pd->vpn.ipv6.enabled) ||
((pkt.tuple.ipver == 4) && !pd->vpn.ipv4.enabled)) {
char buf[512];