转发TCP/IP端口9100 转发SNMP端口161，162（如果启用了SNMP协议） How Network Printing Works Service Name UDP TCP Services for Macintosh (uses AppleTalk) 201, 202, 204, 206 201, 202, 204, 206 Internet Printing Protocol (uses HTTP) 80 80 NWLink (uses IPX/SPX) 213 213 LPDSVC (accepts LPR) 515 515 LPR Port (sends LPR) 721-731, >1023 721-731, >1023 Server (using SMB) 137, 138 139 Server (using RPC) 530 530 Standard Port Monitor (using SNMP) 161, 162 161, 162 Standard Port Monitor (using LPR) > 1023 > 1023 Standard Port Monitor (using RAW) 2000, 2501-2503, 2000, 2501, 2503, 3001, 6869, >=9100 3001, 6869, >=9100