03-06-2002
Redhat 7.2 sets up an iptables-based firewall for you automatically during installation. To open a tcp port use something like:
iptables -A INPUT -s <source-ip/wildcard> -p tcp -m tcp --dport <port-number> -j ACCEPT
See the official HOWTo from one of the iptables authors here:
http://netfilter.samba.org/unreliabl...WTO/index.html
See also: the iptables man page.
RedHat also comes with a GUI firewall configuration tool I believe.
9 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I am very new to unix. I want to open a file and read one line in at a time. Can anybody help? (3 Replies)
Discussion started by: saarshad001
3 Replies
2. UNIX for Advanced & Expert Users
I have installed JASS on one of my sun servers.
I am now trying to open for CDE. For that I have done these steps:
mv /etc/rc2.d/_S71rpc.JASS.* /etc/rc2.d/S71rpc
mv /etc/rc2.d/_S99dtlogin.JASS* /etc/rc2.d/S99dtlogin
but still no CDE.
Any advice on this?? (3 Replies)
Discussion started by: encrypted
3 Replies
3. AIX
Hi guys,
I need to open ports on my AIX machine. The only way I know is to use service name to disable or enable ports which are used by the services. I found in /etc/services that the ports are unidentified. Btw, I want to open port number 11576 and 11577. Need help on this one. Thanks! :) (1 Reply)
Discussion started by: raskita
1 Replies
4. UNIX for Dummies Questions & Answers
I'm not sure if this is the right place for this post, but I'd be grateful if somebody could please help me. I'm trying to open ports 999, 1982 and 1983 but am not having much luck. I used
iptables -A INPUT -i eth0 -p tcp --sport 999 -m state --state NEW,ESTABLISHED -j ACCEPT
iptables -A INPUT -i... (2 Replies)
Discussion started by: thehaapyappy
2 Replies
5. IP Networking
Please can somebody help me. I'm trying to open ports 999, 1982 and 1983 but am not having much luck. I used
iptables -A INPUT -i eth0 -p tcp --sport 999 -m state --state NEW,ESTABLISHED -j ACCEPT
iptables -A INPUT -i eth0 -p tcp --sport 1982 -m state --state NEW,ESTABLISHED -j ACCEPT
iptables... (5 Replies)
Discussion started by: thehaapyappy
5 Replies
6. Solaris
Hello all,
I need assistance...
I need to open a port # 36677 and have it remain open even after a power cycle.
I thought all I needed to do was add it to /etc/services. That was not it...
Can someone please tell me how to do this.
Thank you. (6 Replies)
Discussion started by: komputersman
6 Replies
7. Solaris
I am working with Solaris 9.In that I am trying to open SMC(Solaris Management Console) but when I am clicking it,nothing is opening.
Can any1 tell me why it is not opening??:confused: (1 Reply)
Discussion started by: smartgupta
1 Replies
8. Cybersecurity
Hello there
I'm using a vendor-supplied application on RHEL4 that includes a built-in Tcl webserver. The webserver is working but I cannot access it from any computer other than the host workstation. I suspect that the firewall is blocking ports 8015/8016. I have two questions:
1. How do... (1 Reply)
Discussion started by: craig3201
1 Replies
9. UNIX for Dummies Questions & Answers
Hi,
I need a command/script, who opened my dataset, consider a situation like, if a user has opened the dataset few days back then, that command/script should list his/her id.
I don't want audit on my dataset, i need only list of users who are using my dataset.
Thank you. (10 Replies)
Discussion started by: subbarao12
10 Replies
LEARN ABOUT OPENDARWIN
iptables-save
IPTABLES-SAVE(8) iptables 1.6.1 IPTABLES-SAVE(8)
NAME
iptables-save -- dump iptables rules to stdout
ip6tables-save -- dump iptables rules to stdout
SYNOPSIS
iptables-save [-M modprobe] [-c] [-t table]
ip6tables-save [-M modprobe] [-c] [-t table]
DESCRIPTION
iptables-save and ip6tables-save are used to dump the contents of IP or IPv6 Table in easily parseable format to STDOUT. Use I/O-redirect-
ion provided by your shell to write to a file.
-M, --modprobe modprobe_program
Specify the path to the modprobe program. By default, iptables-save will inspect /proc/sys/kernel/modprobe to determine the exe-
cutable's path.
-c, --counters
include the current values of all packet and byte counters in the output
-t, --table tablename
restrict output to only one table. If not specified, output includes all available tables.
BUGS
None known as of iptables-1.2.1 release
AUTHORS
Harald Welte <laforge@gnumonks.org>
Rusty Russell <rusty@rustcorp.com.au>
Andras Kis-Szabo <kisza@sch.bme.hu> contributed ip6tables-save.
SEE ALSO
iptables-apply(8),iptables-restore(8), iptables(8)
The iptables-HOWTO, which details more iptables usage, the NAT-HOWTO, which details NAT, and the netfilter-hacking-HOWTO which details the
internals.
iptables 1.6.1 IPTABLES-SAVE(8)