i have a server that has a private ip address 192.168.32.x. the private network is masqueraded under a public ip. now, a company that sold the server to me are providing me with support for the server. they ask me to give them access so that can come into the server and make some config changes. can any one please tell me how i can give them access so that they can come into the private ip of the server through the public ip?
If you want to give a single service access (ssh (tcp port 22), telnet (tcp port 23), ftp (tcp port 21) etc.) you can follow this example http://wiki.mikrotik.com/wiki/Forwarding_a_port_to_an_internal_IP . If they need full access, you can ask them for their IP address. And add rule like
/ip firewall nat add chain=dstnat src-address=company_IP dst-address=your_pub_IP protocol=tcp \
action=dst-nat to-addresses=192.168.32.x