Am Do, den 18.11.2004 schrieb Vinicius um 3:01: > In the scenario below, does an ADSL modem (router) in generally defaults > to deny access to the ports 21, 23 and 80, please? > > TIA, Vinicius. > > ------------ > | | > | Internet | > | | > ------------ > | > -------------- > | Public IP | > -- --- -- > | | > | M. ADSL | > | | > -- --- -- > | Private IP | > -------------- > | > ------------ > | | > | Private | > | Network | > | | > ------------ > > ______________________________________________________________________ That depends. I suspect it is a hardware router - previous I thought you were talking about a PC running Fedora. So, if you don't let the router forward the ports 21 (FTP), 23 (Telnet) and 80 (HTTP) to an internal host, then why should it accept connections on these ports from the WAN side? Administration should be done from internal, from the LAN port connections. Probably Telnet and HTTP are open to allow administration either by a telnet connect with a terminal or by using a browser. Close it for the WAN side (Internet) as it is insecure. Don't know what the open port 21 could be useful for (firmware upload?). In short: if the router does not forward incoming traffic to LAN hosts - i.e. a webserver on a LAN host - then it is proper that the router denies connections on the ports you spoke about. Alexander -- Alexander Dalloz | Enger, Germany | new address - new key: 0xB366A773 legal statement: http://www.uni-x.org/legal.html Fedora GNU/Linux Core 2 (Tettnang) on Athlon kernel 2.6.8-1.521smp Serendipity 03:16:00 up 5:01, 16 users, 0.09, 0.31, 0.40
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