hi, I have a question for network. I have Dell dimention comes with 3c905C netcard. I can ping the gateway. but not able to ping outside world. is there anyone know how to do it? Thanks.
xing -----Original Message----- From: "Gene Kartavtsev" <[EMAIL PROTECTED]> Date: Thu, 8 Nov 2001 23:10:46 -0500 To: <[EMAIL PROTECTED]> Subject: RE: Network connection problems > I believe it's your firewall setting... You will need to do masquerading > not really complicated though all you need, just get to your ipchains > file in /etc/sysconfig/ directory then edit the file as following just > use your ports that you want to enable or disable > > > # Firewall configuration written by lokkit > # Manual customization of this file is not recommended. > # Note: ifup-post will punch the current nameservers through the > # firewall; such entries will *not* be listed here. > :input ACCEPT > :forward ACCEPT > :output ACCEPT > -A input -s 0/0 -d 0/0 22 -p tcp -y -j ACCEPT > -A input -s 0/0 -d 0/0 23 -p tcp -y -j ACCEPT > -A input -s 0/0 -d 0/0 25 -p tcp -y -j ACCEPT > -A input -s 0/0 -d 0/0 80 -p tcp -y -j ACCEPT > -A input -s 0/0 -d 0/0 21 -p tcp -y -j ACCEPT > -A input -s 0/0 -d 0/0 554 -p tcp -y -j ACCEPT > -A input -s 0/0 -d 0/0 8080 -p tcp -y -j ACCEPT > -A input -s 0/0 -d 0/0 -i lo -j ACCEPT > -A input -s 0/0 -d 0/0 -i eth0 -j ACCEPT > -A input -s 0/0 -d 0/0 -i eth1 -j ACCEPT > -A input -s 160.79.54.10 53 -d 0/0 -p udp -j ACCEPT > -A input -s 160.79.2.2 53 -d 0/0 -p udp -j ACCEPT > -A input -s 0/0 -d 0/0 -p tcp -y -j REJECT > -A input -s 0/0 -d 0/0 -p udp -j REJECT > > Masquarading is here: > > -P forward DENY > -A forward -i eth1 -j MASQ > > > For port list see attach > > > Regards, gene > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED]] On Behalf Of Willy T > Sent: Thursday, November 08, 2001 2:54 PM > To: [EMAIL PROTECTED] > Subject: Network connection problems > > > Okay, I've searched the logs for a case like this but have been unable > to > come > up with a solution, so here goes: > > I have a network of three machines and a switch. The server machine is a > Dell P4 running a full install of RH 7.1, and the two workers are Dell > P3s, > also running full installs of RH 7.1. The switch is a 3COM 24-port > SuperStack 3, > model number 3C1698OA. The server has to ethernet cards, one attached to > the outside world and given a static, real IP address, and the other > given > a static but internal-use-only IP address of 198.162.100.1, and that > card > connects to the switch. The switch has IP 198.162.100.2, and the two > workers > are 198.162.100.3 and .4, respectively. > > Worker > Worker > 192.168.100.3 > 192.168.100.4 > * > * > * > * > ********** Switch *********************** > 192.168.100.2 > * > * > * > Server > 192.168.100.1 (Card #1) > XXX.XXX.XXX.X (Card #2, Real IP address) > * > * > * > Rest of the world > > I have enabled telnet and ftp on all three machines, and all three > machines > can telnet or ftp to themselves. In addition, netstat -at says that all > three > machines have telnet, ftp, and ssh on LISTEN, and all three machines are > running xinetd. Finally, The workers can telnet to the server, the > server > can > telnet to the outside world, and any machine on the network can ping any > other > machine successfully. So, why do the worker machines *not* accept any > incoming > connections (ssh, ftp, telnet, http) from any machine? To summarize: > > worker telnet server : OK > server telnet world : OK > any ping any : OK > any telnet worker : "Connection Refused" error. > NOte that it is not a no route to host or destination unreachable, but > a connection refused. The switch shows traffic on both machines ports > when > a connection is tried, and ping gets a response, so the physical > connections > are there. What have I done wrong that nobody can reach the workers? > (The tcp_wrappers, hosts.deny and hosts.allow, are empty on the workers, > and it did not work when I specifically named the server in those files > either) > THe workers are setup to use the 198.162.100.1 card on the server as a > router > and nameserver, and it does not matter whether telnet/ftp/ssh is > attempted > by name or number, it still yields connection refused. What have I done > wrong??? Oh, and BTW, all of the machines have allow all firewall rules. > > Just a wee bit frustrated, > > William Hooper > > > > > > _______________________________________________ > Seawolf-list mailing list > [EMAIL PROTECTED] > https://listman.redhat.com/mailman/listinfo/seawolf-list > -- _______________________________________________ 1 cent a minute calls anywhere in the U.S.! http://www.net2phone.com/cgi-bin/link.cgi?170 _______________________________________________ Seawolf-list mailing list [EMAIL PROTECTED] https://listman.redhat.com/mailman/listinfo/seawolf-list
