Iptables -A OUTPUT -p tcp -dport 22 ! -host smtp.example. # Forbid outgoing SMTP except to a known relay Iptables -A INPUT -p tcp -dport 22 -j ACCEPT Iptables -A INPUT -p udp -sport 53 -j ACCEPT
Iptables -A INPUT -m conntrack -ctstate RELATED,ESTABLISHED -j ACCEPT /usr/local/sbin/netatalk -V netatalk 3.1.12 - Netatalk AFP server service controller daemon This program is free software you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation either version 2 of the License, or (at your option) any later version. # Accept incoming packets on existing connections
Here's a simple Linux firewall configuration suitable for a typical client machine, that allows everything outdoing except SMTP to a machine other than and blocks incoming TCP connections except on port 22 (SSH). Blocking ICMP indiscriminately can make network problems hard to diagnose and can cause floods due to applications not getting proper error replies. This module allows the user to configure the FreeBSD firewall via webmin. You should allow all ICMP unless you have a specific reason to block certain kinds of packets. Description, View reports on bandwidth usage by host, port, protocol and time. A typical basic firewall for a client machine allows all or most outgoing connections, and blocks incoming connections.įor ping, allow ICMP. There's rarely any security reason to prevent outgoing connections except maybe to force outgoing email to go through a dedicated relay (to prevent infected machines from sending spam undetected). TCP is a connected protocol the two ends of the connection are not symmetric and firewalls usually make a difference between. Fixed the issue where SRM might reset the firewall rules of Site-to-Site VPN. Fixed the issue where the IGMP proxy might not work properly with the ISP profile (Telfort, XS4ALL, and KPN). 2.For DNS, you need to allow UDP packets between any port on an IP address inside the firewall, and port 53 on an IP address outside the firewall.įor HTTPS, you need to allow TCP packets between any port on an IP address inside the firewall, and port 443 outside the firewall, or more rarely any port outside the firewall (some websites are not on the default port). Fixed multiple security vulnerabilities regarding Netatalk (Synology-SA-22:06). The advantage of this is that you can set up his shared folder permissions for each user separately, and you can understand the details by yourself.
If you want to share more folders later, you can create different user groups, and assign the folders to the corresponding user groups, and then add users who need to be able to access the shared folders to these user groups.
Tags: linux, netatalk, ubuntu sudo su - cd /usr/src apt-get source netatalk apt-get install devscripts fakeroot libssl-dev cracklib2-dev apt-get build-dep netatalk cd netatalk-2 DEBBUILDOPTIONSssl debuild dpkg -i.#The special permission bit "2" is used here, so that the file or directory created under picture in the future will belong to g-picture. Comments Off on Configuring netatalk under Ubuntu.# Assign the picture directory to the corresponding user and user group (the user group must be set to the one just created) #Add a user group, specifically used to access the picture directory (the directory will be created later)