diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/init.cpp | 2 | ||||
| -rw-r--r-- | src/net.cpp | 6 |
2 files changed, 6 insertions, 2 deletions
diff --git a/src/init.cpp b/src/init.cpp index 46dce6aa97..1220f39b14 100644 --- a/src/init.cpp +++ b/src/init.cpp @@ -450,7 +450,7 @@ void SetupServerArgs(NodeContext& node) argsman.AddArg("-peerbloomfilters", strprintf("Support filtering of blocks and transaction with bloom filters (default: %u)", DEFAULT_PEERBLOOMFILTERS), ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION); argsman.AddArg("-peerblockfilters", strprintf("Serve compact block filters to peers per BIP 157 (default: %u)", DEFAULT_PEERBLOCKFILTERS), ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION); argsman.AddArg("-permitbaremultisig", strprintf("Relay non-P2SH multisig (default: %u)", DEFAULT_PERMIT_BAREMULTISIG), ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION); - argsman.AddArg("-port=<port>", strprintf("Listen for connections on <port> (default: %u, testnet: %u signet: %u, regtest: %u)", defaultChainParams->GetDefaultPort(), testnetChainParams->GetDefaultPort(), signetChainParams->GetDefaultPort(), regtestChainParams->GetDefaultPort()), ArgsManager::ALLOW_ANY | ArgsManager::NETWORK_ONLY, OptionsCategory::CONNECTION); + argsman.AddArg("-port=<port>", strprintf("Listen for connections on <port>. Nodes not using the default ports (default: %u, testnet: %u, signet: %u, regtest: %u) are unlikely to get incoming connections.", defaultChainParams->GetDefaultPort(), testnetChainParams->GetDefaultPort(), signetChainParams->GetDefaultPort(), regtestChainParams->GetDefaultPort()), ArgsManager::ALLOW_ANY | ArgsManager::NETWORK_ONLY, OptionsCategory::CONNECTION); argsman.AddArg("-proxy=<ip:port>", "Connect through SOCKS5 proxy, set -noproxy to disable (default: disabled)", ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION); argsman.AddArg("-proxyrandomize", strprintf("Randomize credentials for every proxy connection. This enables Tor stream isolation (default: %u)", DEFAULT_PROXYRANDOMIZE), ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION); argsman.AddArg("-seednode=<ip>", "Connect to a node to retrieve peer addresses, and disconnect. This option can be specified multiple times to connect to multiple nodes.", ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION); diff --git a/src/net.cpp b/src/net.cpp index af2afa218e..b3c521116b 100644 --- a/src/net.cpp +++ b/src/net.cpp @@ -2074,7 +2074,11 @@ 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; |