Those ports are used for IPSec services. Adam Gilstrap agilstrap@xxxxxxxxxxxxxxxx Director of Information Technology Phone:(706)724-1555 Fax:(706)262-5912 -----Original Message----- From: Ryan Golhar [mailto:golharam@xxxxxxxxx] Sent: Thursday, April 08, 2004 9:13 AM To: redhat-list@xxxxxxxxxx Subject: Iptables questions I recently installed Enterprise AS and set up the firewall using redhat-config-securitylevel to only allow ssh traffic through. I then looked at iptables and see the following: # Firewall configuration written by redhat-config-securitylevel # Manual customization of this file is not recommended. *filter :INPUT ACCEPT [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [0:0] :RH-Firewall-1-INPUT - [0:0] -A INPUT -j RH-Firewall-1-INPUT -A FORWARD -j RH-Firewall-1-INPUT -A RH-Firewall-1-INPUT -i lo -j ACCEPT -A RH-Firewall-1-INPUT -p icmp --icmp-type any -j ACCEPT -A RH-Firewall-1-INPUT -p 50 -j ACCEPT -A RH-Firewall-1-INPUT -p 51 -j ACCEPT -A RH-Firewall-1-INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT -A RH-Firewall-1-INPUT -j REJECT --reject-with icmp-host-prohibited COMMIT Its allowing icmp traffic, traffic on ports 50 & 51 as well. Why is that? Shouldn't it just allow ssh traffic? What is ports 50 & 51 used for? I didn't see it in /etc/services ----- Ryan Golhar Computational Biologist The Informatics Institute at The University of Medicine & Dentistry of NJ Phone: 973-972-5034 Fax: 973-972-7412 Email: golharam@xxxxxxxxx -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
