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Fall back to TCP connect ping on Windows without pcap

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While Windows raw sockets can send and receive ICMP packets, Nmap relies on
libpcap packet capture to spot responses, so if pcap isn't available
(--unprivileged or Npcap not installed), we need to fall back to TCP connect for
host discovery, just like we do for unprivileged users on other operating
systems. Previous behavior was a fatal error suggesting unhelpfully to use
--unprivileged.
This commit is contained in:
dmiller
2018-11-08 15:28:13 +00:00
parent 66eee935a9
commit 8605dea33a
1 changed files with 0 additions and 2 deletions
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2
nmap.cc
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@@ -479,7 +479,6 @@ void validate_scan_lists(scan_lists &ports, NmapOps &o) {
o.pingtype |= PINGTYPE_TCP_USE_SYN;
}
#ifndef WIN32 /* Win32 has perfectly fine ICMP socket support */
if (!o.isr00t) {
if (o.pingtype & (PINGTYPE_ICMP_PING | PINGTYPE_ICMP_MASK | PINGTYPE_ICMP_TS)) {
error("Warning: You are not root -- using TCP pingscan rather than ICMP");
@@ -490,7 +489,6 @@ void validate_scan_lists(scan_lists &ports, NmapOps &o) {
}
}
}
#endif
}
struct ftpinfo ftp = get_default_ftpinfo();