一、怎么查看路由器开放端口
我估计你用的是普通的小型路由器，可能路由器上有防火墙功能，1701至1704为非熟知端口一般不会做限制。
很可能是你pc的上的防火墙上把端口关闭了，检查下防火墙的设置，启动财务软件，在运行里输入cmd,在console窗口里输入netstate
-a
检查端口1701至1704是否是listen状态。
如果是listen状态证明本地端口已经打开可以进行tcp连接，如果还是无法连接。
可能是你的isp提供的接入禁止使用端口1701至1704.联系你的isp。
如果公司有硬件防火墙或者路由器上带有防火墙功能，如果提供web配置方式可以使用web页面进行配置，里面应该有相关选项(图文并茂比较简单直观）。
如果web配置中无法提供对端口过滤功能的配置就采用本地配置方式。
使用rs—232串口线缆连接路由器的console口和pc机的串口。
在pc机上开始->附件->通讯->超级终端，设置好通信参数，通常是波特率9600，8位数据位，1位停止位，无奇偶校验，无流控，不同厂商可能参数不一致，请查看产品手册。
进入后由于可能有不同的操作系统常用的有ios（思科设备）和vrp（华为的设备）两种操作系统大同小异（但是通常的配置都是在第三层上的配置不涉及传输层的配置，打开tcp端口应该是集成有防火墙的路由器的配置）具体配置命令还要查看产品手册。
我能提供的信息就这么多。
二、如何查看路由器端口号
用netstat -a -n命令查看。
用state命令查看相关讯息：
LISTEN：侦听来自远方的TCP端口的连接请求
SYN-SENT：再发送连接请求后等待匹配的连接请求
SYN-RECEIVED：再收到和发送一个连接请求后等待对方对连接请求的确认
ESTABLISHED：代表一个打开的连接
FIN-WAIT-1：等待远程TCP连接中断请求，或先前的连接中断请求的确认
FIN-WAIT-2：从远程TCP等待连接中断请求
CLOSE-WAIT：等待从本地用户发来的连接中断请求
CLOSING：等待远程TCP对连接中断的确认
LAST-ACK：等待原来的发向远程TCP的连接中断请求的确认
TIME-WAIT：等待足够的时间以确保远程TCP接收到连接中断请求的确认
CLOSED：没有任何连接状态
三、如何查询路由端口信息
1.查询机器用了哪个端口
display arp dynamic
Type: S-Static D-Dynamic
IP Address MAC Address VLAN ID Port Name Aging Type
10.248.2.190 0000-5e00-010a 220 GigabitEthernet6/0/48 12 D
10.248.2.189 0018-8288-64be 220 GigabitEthernet6/0/1 19 D
10.248.2.188 0018-8289-87e3 220 GigabitEthernet6/0/48 19 D
10.248.3.244 0018-8270-996b 210 GigabitEthernet6/0/30 4 D
10.248.3.246 0000-5e00-010a 210 GigabitEthernet6/0/30 13 D
10.248.3.245 0018-8287-c277 210 GigabitEthernet6/0/1 16 D
10.248.3.195 000f-e2b2-5a0a 110 GigabitEthernet6/0/1 18 D
或者查看MAC地址对应的端口
display mac-address
MAC ADDR VLAN ID STATE PORT INDEX AGING TIME(s)
0000-5e00-0101 10 Learned GigabitEthernet6/0/1 AGING
0003-b24a-9308 10 Learned GigabitEthernet6/0/1 AGING
001f-290d-a94b 10 Learned GigabitEthernet6/0/1 AGING
001f-290d-a968 10 Learned GigabitEthernet6/0/1 AGING2.通过查询配置信息查询商品名字
display current-configuration
interface GigabitEthernet6/0/42
port access vlan 110
#
interface GigabitEthernet6/0/43
port access vlan 110
#
interface GigabitEthernet6/0/44
port access vlan 20
#
interface GigabitEthernet6/0/45
#
interface GigabitEthernet6/0/46
#
interface GigabitEthernet6/0/47
#
interface GigabitEthernet6/0/48
port access vlan 220
3.查看端口状态
display interface GigabitEthernet6/0/31
GigabitEthernet6/0/31 current state : UP
IP Sending Frames' Format is PKTFMT_ETHNT_2, Hardware address is 000f-e2b2-5b17
The Maximum Transmit Unit is 1500
Media type is Twisted pair, loopback not set
Port hardware type is 1000_BASE_T
1000Mbps-speed mode, Full-duplex mode
Link speed type is autonegotiation, Link duplex type is autonegotiation
Flow-control is not enabled
The Maximum Frame Length is 1536
Allow jumbo frame to pass
PVID: 110
Mdi type: auto
Port link-type: access
Tagged VLAN ID : none
Untagged VLAN ID : 110
Last 300 seconds input: 0 packets/sec 5 bytes/sec
Last 300 seconds output: 6 packets/sec 1453 bytes/sec
Input(total): 13184423 packets, 2298060871 bytes
- broadcasts, - multicasts
Input(normal): 13184423 packets, - bytes
512120 broadcasts, 10 multicasts
Input: 0 input errors, 0 runts, - giants, 0 throttles, 0 CRC
0 frame, - overruns, - aborts, - ignored, - parity errors
Output(total): 102676481 packets, 32553486104 bytes
- broadcasts, - multicasts, - pauses
Output(normal): 102676481 packets, - bytes
850988 broadcasts, 48393324 multicasts, 0 pauses
Output: 0 output errors, - underruns, - buffer failures
0 aborts, 0 deferred, 0 collisions, 0 late collisions
- lost carrier, - no carrier
Receive Packet Peak Value Info: 50985214 bytes/sec, hAPpened at 16:8:31 4-8-2010
Transmit Packet Peak Value Info: 95747209 bytes/sec, happened at 10:32:16 12-15-20094.对于一个端口对应多个IP的需要查到这个网卡地址
先登陆第一台路由器，查看IP
display arp dynamic
Type: S-Static D-Dynamic
IP Address MAC Address VLAN ID Port Name Aging Type
10.248.2.190 0000-5e00-010a 220 GigabitEthernet6/0/48 12 D
10.248.2.189 0018-8288-64be 220 GigabitEthernet6/0/1 19 D
10.248.2.188 0018-8289-87e3 220 GigabitEthernet6/0/48 19 D
10.248.3.244 0018-8270-996b 210 GigabitEthernet6/0/30 4 D
10.248.3.246 0000-5e00-010a 210 GigabitEthernet6/0/30 13 D
10.248.3.245 0018-8287-c277 210 GigabitEthernet6/0/1 16 D
10.248.3.195 000f-e2b2-5a0a 110 GigabitEthernet6/0/1 18 D
10.248.2.3 000f-e2b2-5a0a 10 GigabitEthernet6/0/1 13 D
10.248.2.13 001f-290d-a96c 10 GigabitEthernet6/0/1 13 D
10.248.2.31 0023-7da9-9f8d 10 GigabitEthernet6/0/18 14 D
10.248.2.36 0023-7da9-9f5c 10 GigabitEthernet6/0/21 14 D
10.248.2.14 001f-290d-a968 10 GigabitEthernet6/0/1 15 D
10.248.2.28 0023-7da9-8ff7 10 GigabitEthernet6/0/17 15 D
10.248.2.32 0023-7da9-9f8d 10 GigabitEthernet6/0/18 15 D
10.248.2.40 0023-7da9-9f3b 10 GigabitEthernet6/0/22 15 D
10.248.2.20 001f-290d-a94b 10 GigabitEthernet6/0/1 15 D
10.248.2.62 0000-5e00-0101 10 GigabitEthernet6/0/1 15 D
10.248.2.41 0000-5e00-0101 10 GigabitEthernet6/0/1 15 D
10.248.2.16 001f-290d-a91e 10 GigabitEthernet6/0/35 15 D
10.248.2.24 001f-290d-a957 10 GigabitEthernet6/0/36 15 D
10.248.2.11 001f-290d-a96c 10 GigabitEthernet6/0/1 19 D
10.248.2.55 0000-5e00-0101 10 GigabitEthernet6/0/1 19 D
10.248.2.19 001f-290d-a94b 10 GigabitEthernet6/0/1 19 D
10.248.2.23 001f-290d-a957 10 GigabitEthernet6/0/36 20 D
10.248.2.35 0023-7da9-9f5c 10 GigabitEthernet6/0/21 20 D
10.248.2.61 0003-b24a-9308 10 GigabitEthernet6/0/1 20 D
10.248.2.60 0003-b24a-9548 10 GigabitEthernet6/0/38 20 D
再登陆第二台路由器
display mac-address vlan 10
MAC ADDR VLAN ID STATE PORT INDEX AGING TIME(s)
0000-5e00-010a 10 Learned GigabitEthernet6/0/1 AGING
0003-b24a-9548 10 Learned GigabitEthernet6/0/1 AGING
000f-e2b2-5b18 10 Learned GigabitEthernet6/0/1 AGING
001f-290d-a91e 10 Learned GigabitEthernet6/0/1 AGING
001f-290d-a94f 10 Learned GigabitEthernet6/0/1 AGING
001f-290d-a957 10 Learned GigabitEthernet6/0/1 AGING
001f-290d-a961 10 Learned GigabitEthernet6/0/1 AGING
0023-7da9-8ff7 10 Learned GigabitEthernet6/0/1 AGING
0023-7da9-9f3b 10 Learned GigabitEthernet6/0/1 AGING
0023-7da9-9f5c 10 Learned GigabitEthernet6/0/1 AGING
0023-7da9-9f8d 10 Learned GigabitEthernet6/0/1 AGING
001f-290d-a96c 10 Learned GigabitEthernet6/0/33 AGING
001f-290d-a968 10 Learned GigabitEthernet6/0/34 AGING
001f-290d-a94b 10 Learned GigabitEthernet6/0/37 AGING
0000-5e00-0101 10 Learned GigabitEthernet6/0/38 AGING
0003-b24a-9308 10 Learned GigabitEthernet6/0/38 AGING--- 16 mac address(es) found in vlan 10 --- 这样就可以查出10.248.2.13这个IP用的是GigabitEthernet6/0/33这个端口
