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nfqws: trash flood check

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bol-van 2024-12-13 15:59:58 +03:00
parent fc42f6e20e
commit dcf78a76e5
1 changed files with 24 additions and 0 deletions
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24
nfq/nfqws.c
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@ -1190,6 +1190,27 @@ void config_from_file(const char *filename)
}
#endif
void check_dp(const struct desync_profile *dp)
{
// only linux has connbytes limiter
if (dp->desync_any_proto && !dp->desync_cutoff &&
(dp->desync_mode==DESYNC_FAKE || dp->desync_mode==DESYNC_RST || dp->desync_mode==DESYNC_RSTACK ||
dp->desync_mode==DESYNC_FAKEDSPLIT || dp->desync_mode==DESYNC_FAKEDDISORDER || dp->desync_mode2==DESYNC_FAKEDSPLIT || dp->desync_mode2==DESYNC_FAKEDDISORDER))
{
#ifdef __linux__
DLOG_CONDUP("WARNING !!! in profile %d you are using --dpi-desync-any-protocol without --dpi-desync-cutoff\n", dp->n);
DLOG_CONDUP("WARNING !!! it's completely ok if connbytes or payload based ip/nf tables limiter is applied. Make sure it exists.\n");
#else
DLOG_CONDUP("WARNING !!! possible TRASH FLOOD configuration detected in profile %d\n", dp->n);
DLOG_CONDUP("WARNING !!! it's highly recommended to use --dpi-desync-cutoff limiter or fakes will be sent on every processed packet\n");
DLOG_CONDUP("WARNING !!! make sure it's really what you want\n");
#ifdef __CYGWIN__
DLOG_CONDUP("WARNING !!! in most cases this is acceptable only with custom payload based windivert filter (--wf-raw)\n");
#endif
#endif
}
}
#define STRINGIFY(x) #x
#define TOSTRING(x) STRINGIFY(x)
#if defined(ZAPRET_GH_VER) || defined (ZAPRET_GH_HASH)
@ -1950,6 +1971,7 @@ int main(int argc, char **argv)
}
else
{
check_dp(dp);
if (!(dpl = dp_list_add(&params.desync_profiles)))
{
DLOG_ERR("desync_profile_add: out of memory\n");
@ -2154,6 +2176,8 @@ int main(int argc, char **argv)
dp_entry_destroy(dpl);
desync_profile_count--;
}
else
check_dp(dp);
// do not need args from file anymore
#if !defined( __OpenBSD__) && !defined(__ANDROID__)