20我有一个连接到 Comcast Business 路由器 (Cisco DPC3941B) 的静态 IP 地址的服务器。
我还有第二台机器直接连接到同一个路由器。它被分配了一个 NAT 地址 10.xxx
当第二台机器连接到服务器时（反之亦然），我的性能非常慢。例如，如果我从第二台机器到服务器进行 RDP 连接，则屏幕绘制速度非常慢。同样，从第二台机器到服务器的 HTTP 连接（通过浏览器）明显很慢。
但是，当从外部网络连接到服务器时，一切似乎都很好。没有异常延迟或性能问题。
使用不同路由器（摩托罗拉路由器）的完全相同的设置没有这个问题。
这是此路由器的问题/限制吗？为什么？是通过 NAT 进行的翻译吗？为什么这么慢？
还是与我的设置有关？我可能在服务器或路由器上配置错误吗？
对调试/诊断有什么建议吗？
编辑 2018 年 5 月 27 日：添加了配置设置
ROUTER CONFIG
Router is set to defaults/factory settings except for what Comcast
did to set up the static IP address, etc. Settings as follow:
Bridge Mode: Disabled
WiFi: Enabled (but not used)
DOCSIS Software Version: dpc3941b-v303r20421762-180419a-CMCST
Model: DPC3941B
Vendor: Cisco
Hardware Revision: 1.0
Processor Speed: 447.28 MHz
DRAM: 1048576 MB
Flash: 128 MB
Firewall
Disable Firewall for True Static IP Subnet Only: OFF
Disable Gateway Smart Packet Detection: ON
Disable Ping on WAN Interface: OFF
Firewall Security Level: Minimum
LAN-to-WAN: Allow all
WAN-to-LAN: Block IDENT (port 113)
Local IP Network
IP Address (IPv4): 10.1.10.1
Subnet mask: 255.255.255.0
DHCPv4 Server: Enabled
DHCPv4 Lease Time: 7d:0h:0m
Link Local Gateway Address (IPv6): fe80::481d:70ff:fede:dcc8
Global Gateway Address (IPv6): 2603:3024:1705:3c00:481d:70ff:fede:dcc8
Delegated prefix: 2603:3024:1705:3c00::/56
DHCPv6 Lease Time: 7d:0h:0m
IPV6 DNS: 2001:558:feed::1
WAN Network
Internet:Active
Local time:2018-05-26 14:11:06
System Uptime: 4 days 16h: 56m: 42s
WAN IP Address (IPv4): 50.242.89.126
WAN Default Gateway Address (IPv4): 24.5.176.1
WAN IP Address (IPv6): 2001:558:6045:bf:31e4:2d63:9158:8238
WAN Default Gateway Address (IPv6): fe80::201:5cff:fe65:4c46
Delegated prefix (IPv6): 2603:3024:1705:3c00::/56
Primary DNS Server (IPv4): 75.75.75.75
Secondary DNS Server (IPv4):75.75.76.76
Primary DNS Server (IPv6):2001:558:feed::1
Secondary DNS Server (IPv6):2001:558:feed::2
WAN Link Local Address (IPv6): fe80::4a1d:70ff:fede:dcc7
DHCP Client (IPv4):Enabled
DHCP Client (IPv6): Enabled
DHCP Lease Expire Time (IPv4): 2d:10h:53m
DHCP Lease Expire Time (IPv6): 2d:17h:59m
Managed Sites: Disabled
Managed Services: Disabled
Managed Devices: Disabled
Port Forwarding: Disabled
Port Triggering: Disabled
True Static IP Port Management: Disable all rules and allow all
inbound traffic through
Remote Management: Disabled
DMZ: Disabled
NAT: Disable All
Static Routing: None
Dynamic DNS: Disabled
Device Discovery: Disabled
编辑 2018 年 5 月 27 日 这可能是相关的：电子邮件未通过本地 wifi 发送，其他时间发送
也许思科路由器不支持发夹？但这不会导致没有连接而不是连接缓慢吗？