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[ale] NTP and 'ipchains'
- Subject: [ale] NTP and 'ipchains'
- From: johnmills at speakeasy.net (John Mills)
- Date: Sat Jan 17 16:15:54 2004
I'm running RH-7.3 and 'ipchains'. My LAN sits behind a firewall/router
that forwards only port 22 to serve incoming SSH. In order for 'ntpdate'
to successfully connect to outside servers, I had to add an 'ipchains'
-A input -s 0/0 -d 0/0 123 -p udp -j ACCEPT
I didn't have to forward this port back through the router/firewall,
Was it normal to need such a rule when I don't need rules to pass other
sorts of replies, such as responses to telnet and http inquiries to other
Thanks for any background on this.
- John Mills
john.m.mills at alum.mit.edu