Wait Wait Wait!!!
The problem is solved i have found a 20 range of their public ip address, seven of the are up 5 of that 7 are servers with alot of same configs and 2 of that 7 are Cisco devices there is no open TCP ports on that two but nmap aggressive scanning says tat they are cisco devices

now tell me please

1- how can i find which of them is router or switch?
2- how can i which network they are routing

please help i have complete the project three days later. thanks

Hi Thomas.
How are you? Thanx for your help i know that, your are right and i don't know cisco hacking but i am really curious to know what those devices are i think they are routers not firewalls but why they dont have any open ports. Anyway thanks i'll go to the next stage

Well, Well, yup that is right TCP/UDP ports are for higher levels in osi or tcp/ip models and i already know that. As i mentioned before they are using cisco stuff and It's better to configure your Cisco device to accept the ssh or at-least telnet connections for later configs because the router/switch is in server room there is so cold and it is hard to config the switch using consol cable, that is why i thought it's strange for a router. anway thanks for your info.