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Need help! Regarding internet security.
Need help! Regarding internet security.
Anyone has paper/doc/info how much security provided by ROUTER that's connected to the
net?
Correct me if I'm wrong, below is what I understand.
1. Router sit in Layer 3 (network layer) and does packet filtering only. It check all packet
forward to it and route to its destination if it knows else it drop the packet.
2. Administrator can only block IP addresses (range of addresses) that he/she feel should be
allowed.
3. Facility such as FTP, telnet, tftp, rlogin, rsh and other internet services could not be blocked
thru ROUTER instead it can only be blocked in internet server host.
Finally, I would appreciate if anyone could shed some lights on the below:
Internet FTP facility- how this facility could harm one's server that is connected to the net. Is that
possible hacker could use this facility to hack in.
How about Telnet, SMTP, rlogin (any other ) facilities ? How these facilities could open door to
hacker ?
Thanks.
habib
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