cisco 878 and 3com how to get it working and getting access to IP camera via public IP

5 pts.
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Cisco 878
Cisco Routers
Network Configuration
Port forwarding
Routers
I got Cisco 878 router with a 3com switch (unmanaged) the end devices Which are connected behind a 3com , are a network recorder and 3 IP camera's I see the arp and mac address, but I can't connect to them, or view the camera or able to access the recorder RTR-1# sh arp Protocol Address Age (min) Hardware Addr Type Interface Internet 192.168.0.2 0 0800.7b88.XXX ARPA Vlan1 Internet 192.168.0.3 1 0800.7b88.XXX ARPA Vlan1 Internet 192.168.0.4 0 0800.7b88.XXX ARPA Vlan1 Internet 192.168.0.200 7 0018.1a08.XXX ARPA Vlan1 Internet 192.168.0.253 - 3037.a67d.XXX ARPA Vlan1 ST-HAL-RTR-1#sh mac ST-HAL-RTR-1#sh mac-address-table Destination Address Address Type VLAN Destination Port ------------------- ------------ ---- -------------------- 0800.7b88.XXXDynamic 1 FastEthernet0 0800.7b88.XXXDynamic 1 FastEthernet0 0800.7b88.XXXDynamic 1 FastEthernet0 3037.a67d.XXXSelf 1 Vlan1 Objective Public IP address Port 8002---NAT into-- Internal 192.168.0.0 Port 80 Cisco 878 Router in G.SHDSL Version 12.4(15)T12 SDSL connection network video recorder WAN ------> router---3com Switch/- IP Camera - IP Camera -IP Camera MOre details to be found at https://supportforums.cisco.com/message/3123041#3123041

Software/Hardware used:
Cisco 878, Version 12.4(15)T12, 3ComĀ® Gigabit Switch 5

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I am making an assumption here, as you have not put in your exact config, that the subnet mask for your LAN segment is a /24 (255.255.255.0). Be aware that you cannot NAT to port 80 on the IP address 192.168.0.0 as it is the network address and as such unusable as a host address. You would need to NAT to a specific host address like 192.168.0.1 etc…..

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