Win98-Linux connectivity

mrrao

I have a LAN, with two Win 98 m/cs and one RH Linux 7.1 m/c. I can ping from any one to any other. I have installed Apache server on one Win 98 m/c and another on the Linux m/c. I can connect to the Windows Apache from browsers on the other two m/cs. But I cannot connect to the Linux Apache from the browsers on Win 98 m/cs. I get the usual message: "There was no response. The server could be down or not responding." But the Linux Apache is up and running: I can connect to the localhost from the Linux m/c, also I can telnet to port 80 on localhost and get the raw HTML error message. Please help me solve this problem. Thanks!
m r rao

brandonschnell

the default install of redhat 7.1 enables a firewall thats likely blocked port 80.

maybe someone else remembers how to disable the firewall on port 80.

Anon

A thousand thanks for your valuable hint! I created the file /etc/rc.d/rc.firewall as follows:

#ref: linux firewalls by r l ziegler, techmedia

#file: /etc/rc.d/rc.firewall

symbolic constants used:

EXTERNAL_INTERFACE="eth0" # internet-connected interface
LOOPBACK_INTERFACE="lo" # however your system names it

IPADDR="192.168.0.6" # your IP address
ANYWHERE="any/0" # match any IP address
MY_ISP="202.54.96.1" # ISP server & NOC address range

LOOPBACK="127.0.0.1/8" # reserved loopback address range
CLASS_A="10.0.0.0/8" # class A private networks
CLASS_B="172.16.0.0/12" # class B private networks
CLASS_C="192.168.0.0/16" # class C private networks
CLASS_D_MULTICAST="224.0.0.0/4" # class D multicast address
CLASS_E_RESERVED_NET="240.0.0.0/5" # class E reserved address
BROADCAST_SRC="0.0.0.0" # broadcast.source address
BROADCAST_DEST="255.255.255.255" # broadcast destination address
PRIVPORTS="0:1023" # well-known, privileged port range
UNPRIVPORTS="1024:65535" # unprivilged port range

flush any existing rules from all chains

ipchains -F

unlimited traffic on loopback interface

ipchains -A input -i $LOOPBACK_INTERFACE -j ACCEPT
ipchains -A output -i $LOOPBACK_INTERFACE -j ACCEPT

allow incoming telnet access to your local server

ipchains -A input -i $EXTERNAL_INTERFACE -p tcp -s $ANYWHERE $UNPRIVPORTS \
-d $IPADDR 23 -j ACCEPT
ipchains -A output -i $EXTERNAL_INTERFACE -p tcp ! -y -s $IPADDR 23 \
-d $ANYWHERE $UNPRIVPORTS -j ACCEPT

allow incoming FTP requests

ipchains -A input -i $EXTERNAL_INTERFACE -p tcp -s $ANYWHERE $UNPRIVPORTS \
-d $IPADDR 21 -j ACCEPT
ipchains -A output -i $EXTERNAL_INTERFACE -p tcp ! -y -s $IPADDR 21 \
-d $ANYWHERE $UNPRIVPORTS -j ACCEPT

normal mode FTP data channel responses

ipchains -A output -i $EXTERNAL_INTERFACE -p tcp -s $IPADDR 20 \
-d $ANYWHERE $UNPRIVPORTS -j ACCEPT
ipchains -A input -i $EXTERNAL_INTERFACE -p tcp ! -y \
-s $ANYWHERE $UNPRIVPORTS -d $IPADDR 20 -j ACCEPT

passive mode FTP data channel responses

ipchains -A input -i $EXTERNAL_INTERFACE -p tcp \
-s $ANYWHERE $UNPRIVPORTS -d $IPADDR $UNPRIVPORTS -j ACCEPT
ipchains -A output -i $EXTERNAL_INTERFACE -p tcp ! -y \
-s $IPADDR $UNPRIVPORTS -d $ANYWHERE $UNPRIVPORTS -j ACCEPT

allowing remote access to a local web server

ipchains -A input -i $EXTERNAL_INTERFACE -p tcp \
-s $ANYWHERE $UNPRIVPORTS -d $IPADDR 80 -j ACCEPT
ipchains -A output -i $EXTERNAL_INTERFACE -p tcp ! -y \
-s $IPADDR 80 -d $ANYWHERE $UNPRIVPORTS -j ACCEPT