Ict-usb-linux
ICT Linux USB for First Semester Students
Version 1, 2014
Date Created: December 2014 Distribution: Linux Mint 17
Features
Basic System Info
ict-2014-v1 ~ # hostname ict-2014-v1 ict-2014-v1 ~ # uname -a Linux ict-2014-v1 3.13.0-37-generic #64-Ubuntu SMP Mon Sep 22 21:28:38 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux Regular user account name: student:x:999:999:Seneca College ICT student,,,:/home/student:/bin/bash student@ict-2014-v1 ~ $ id uid=999(student) gid=999(student) groups=999(student),4(adm),24(cdrom),30(dip),46(plugdev),108(lpadmin),110(sambashare) student@ict-2014-v1 ~ $ cat /etc/resolv.conf # Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8) # DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN nameserver 127.0.1.1 search senecacollege.ca student@ict-2014-v1 ~ $ grep host /etc/nsswitch.conf hosts: files mdns4_minimal [NOTFOUND=return] dns
Disk Usage
Filesystem 1K-blocks Used Available Use% Mounted on /cow 3984736 93728 3891008 3% / udev 3973320 4 3973316 1% /dev tmpfs 796948 1364 795584 1% /run /dev/sdb1 3897904 1651776 2246128 43% /cdrom /dev/loop0 1610368 1610368 0 100% /rofs none 4 0 4 0% /sys/fs/cgroup tmpfs 3984736 140 3984596 1% /tmp none 5120 0 5120 0% /run/lock none 3984736 76 3984660 1% /run/shm none 102400 16 102384 1% /run/user /dev/sdb2 25858132 70220 24451336 1% /home
Open Firewall wall - no filtering rules
- Suggestion:
- Drop policy on INPUT and Forward chains
- Accept policy on OUTPUT chains
- Add accept rule to FORWARD chain to allow "ESTABLISHED" and "RELATED" packets
- Suggestion:
/sbin/iptables -I FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
smbd and nmbd services
- Do you really want to have these on?
ict-2014-v1 selinux # netstat -taunp Active Internet connections (servers and established) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 0.0.0.0:139 0.0.0.0:* LISTEN 1436/smbd tcp 0 0 127.0.1.1:53 0.0.0.0:* LISTEN 3237/dnsmasq tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN 3004/cupsd tcp 0 0 0.0.0.0:445 0.0.0.0:* LISTEN 1436/smbd tcp6 0 0 :::139 :::* LISTEN 1436/smbd tcp6 0 0 ::1:631 :::* LISTEN 3004/cupsd tcp6 0 0 :::445 :::* LISTEN 1436/smbd tcp6 1 0 ::1:55026 ::1:631 CLOSE_WAIT 2185/cups-browsed tcp6 0 0 ::1:55028 ::1:631 ESTABLISHED 2635/cinnamon-setti tcp6 0 0 ::1:631 ::1:55028 ESTABLISHED 3004/cupsd udp 0 0 127.0.1.1:53 0.0.0.0:* 3237/dnsmasq udp 0 0 0.0.0.0:68 0.0.0.0:* 3233/dhclient udp 0 0 172.18.255.255:137 0.0.0.0:* 3361/nmbd udp 0 0 172.18.81.236:137 0.0.0.0:* 3361/nmbd udp 0 0 0.0.0.0:137 0.0.0.0:* 3361/nmbd udp 0 0 172.18.255.255:138 0.0.0.0:* 3361/nmbd udp 0 0 172.18.81.236:138 0.0.0.0:* 3361/nmbd udp 0 0 0.0.0.0:138 0.0.0.0:* 3361/nmbd udp 0 0 0.0.0.0:631 0.0.0.0:* 2185/cups-browsed udp 0 0 0.0.0.0:5353 0.0.0.0:* 1231/avahi-daemon: udp 0 0 0.0.0.0:35063 0.0.0.0:* 1231/avahi-daemon: udp 0 0 0.0.0.0:14647 0.0.0.0:* 3233/dhclient udp6 0 0 :::52153 :::* 1231/avahi-daemon: udp6 0 0 :::28749 :::* 3233/dhclient udp6 0 0 :::5353 :::* 1231/avahi-daemon:
SELinux
Disable and no tools