diff options
Diffstat (limited to 'src/net.cpp')
-rw-r--r-- | src/net.cpp | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/net.cpp b/src/net.cpp index cf987b6995..1fd913eb64 100644 --- a/src/net.cpp +++ b/src/net.cpp @@ -2050,7 +2050,11 @@ void CConnman::ThreadOpenConnections(const std::vector<std::string> connect) continue; } - // do not allow non-default ports, unless after 50 invalid addresses selected already + // Do not allow non-default ports, unless after 50 invalid + // addresses selected already. This is to prevent malicious peers + // from advertising themselves as a service on another host and + // port, causing a DoS attack as nodes around the network attempt + // to connect to it fruitlessly. if (addr.GetPort() != Params().GetDefaultPort() && nTries < 50) continue; |