linux firewall / dns issue


 
Thread Tools Search this Thread
Top Forums UNIX for Advanced & Expert Users linux firewall / dns issue
# 1  
Old 06-12-2006
linux firewall / dns issue

I have set up a linux (red hat 9) box as my main internet router. I am also running a DNS server on it. What are the rules i have to implement to allow DNS queries through the firewall from outside so that the outside world can see my domains?
# 2  
Old 06-13-2006
Netfilter/iptables

You have to fire this command on Linux
/sbin/iptables -I INPUT -p udp --dport 53 -j ACCEPT
read out man pages of Linux firewall "iptables". One of very good document is "Netfilter HOW-To".
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Linux

Linux and SCO ppp, firewall issue?

I' m playng a little retrocomputing. I have setup a virtual machine with SCO unix(3.2v4.2) on qemu The machine start, the novell2000 card(ne2k_pci,ne2k_isa) unfortunately not,probably driver issue. So I try the slirp with this procedure On SCO netconfig add chain..sl ..etc On... (2 Replies)
Discussion started by: Linusolaradm1
2 Replies

2. HP-UX

HP-UX DNS issue

Hi All, I'm having some problems with our HP-UX environment. I'm running Oracle EBS on a HP-UX system, and whenever my primary dns server goes down some of my clients can no longer connect. Everything on my windows side continues to work, and clients can reach the internet and other services... (6 Replies)
Discussion started by: agonza07
6 Replies

3. Red Hat

DNS issue in Redhat 9

Hi all m newbie in linux and trying to setup my internal DNS server for local network.After messing with DNS for hours i am posting this. i have configured /etc/resolve.conf, hostname with domain name in /etc/sysconfig/network file,/etc/hosts file with local host entry and zone file... (1 Reply)
Discussion started by: Vaibhav.T
1 Replies

4. IP Networking

Named - DNS Server - within Firewall

I spent hours trying to create a system where the name server returns a value of 192.168.100.5 locally, but 209.137.nnn.nnn for requests outside of the firewall. If I run "nslookup mail.mydomain.com" from a machine inside the firewall, the 192.168 number is returned, but if I do "nslookup... (3 Replies)
Discussion started by: jgt
3 Replies

5. Red Hat

Linux DNS issue

Hi , I have configured OEL 5.3 server on VMware server,installation went fine, however when i am checking host using configured /etc/hosts i am getting following error let me know where it went wrong . I had disabled firewall options and SELLinux. root@oen11g ~]# host oen11g.grid.com ;;... (2 Replies)
Discussion started by: autoconfig
2 Replies

6. UNIX for Advanced & Expert Users

DNS server choice: Windows DNS vs Linux BIND

I'd like to get some opnions on choosing DNS server: Windows DNS vs Linux BIND comparrsion: 1) managment, easy of use 2) Security 3) features 4) peformance 5) ?? I personally prefer Windows DNS server for management, it supports GUI and command line. But I am not sure about security... (2 Replies)
Discussion started by: honglus
2 Replies

7. IP Networking

NAT Forwarding Issue Endian and Vyatta Firewall

I've experienced this same issue with both the Endian Firewall Appliance and a Vyatta Firewall Appliance. Conversely, it works with a Draytek Firewall/Router. I am trying to forward port 80 traffic to my internal web server which is located on the /24 subnet. I have an external static IP which... (0 Replies)
Discussion started by: mboudro
0 Replies

8. Solaris

SSH/Firewall issue

I am a complete UNIX neophyte with the unenviable task of trying to pseudo manage two SUN boxes with an unknown past. I was not responsible for setting them up, anything that was done on them previously, and have no means of figuring out anything that was done to them. So far I have changed the... (4 Replies)
Discussion started by: tawnos42
4 Replies

9. UNIX for Advanced & Expert Users

vpnclient firewall policy mismatch issue

Hi all, I have installed vpnclient 4.8.00 (0490) on my centOS GNU/Linux OS. I configured the profiles (using the same profile pcf files which was on my WinXp system) I can connect to CISCO VPN from my WinXP machine but with the same profile (.pcf) on Linux am getting "Firewall Policy... (1 Reply)
Discussion started by: zing_foru
1 Replies

10. IP Networking

DNS issue.

Hi, We use linux as a DNS server for our local network. ( linuxnol.nollekens.be ) We can ping this machine on all our XP clients like this: C:\>ping linuxnol Until yesterday it was on our XP clients enough to type "ping ibm250" ( our 2de unix server, an AIX ). But after a shutdown of this... (1 Reply)
Discussion started by: progressdll
1 Replies
Login or Register to Ask a Question