| 3 | == SSH == |
| 4 | |
| 5 | {{{ |
| 6 | nano /etc/ssh/sshd_config |
| 7 | }}} |
| 8 | |
| 9 | Zmiana portu i zablokowanie logowania jako użytkownik root |
| 10 | |
| 11 | {{{ |
| 12 | # What ports, IPs and protocols we listen for |
| 13 | Port 2134 |
| 14 | |
| 15 | # Authentication: |
| 16 | PermitRootLogin no |
| 17 | }}} |
| 18 | |
| 19 | {{{ |
| 20 | service ssh restart |
| 21 | }}} |
| 22 | |
| 23 | == Opcje montowania == |
| 24 | |
| 25 | {{{ |
| 26 | nano /etc/fstab |
| 27 | }}} |
| 28 | |
| 29 | Dodanie opcji nodev,nosuid,noexec do punktu montowania dla /tmp |
| 30 | |
| 31 | {{{ |
| 32 | /dev/mapper/vg0-tmp /tmp ext4 defaults,nodev,nosuid,noexec 1 2 |
| 33 | }}} |
| 34 | |
| 35 | {{{ |
| 36 | mount -o remount /tmp |
| 37 | }}} |
| 38 | |
| 39 | == MOTD == |
| 40 | |
| 41 | {{{ |
| 42 | nano /etc/motd.tail |
| 43 | }}} |
| 44 | |
| 45 | {{{ |
| 46 | ############################################################################### |
| 47 | ## ## |
| 48 | ### Authorized Access Only! ### |
| 49 | ## ## |
| 50 | ############################################################################### |
| 51 | }}} |
| 52 | |
| 53 | == Firewall == |
| 54 | |
| 55 | {{{ |
| 56 | iptables -A INPUT -i lo -j ACCEPT |
| 57 | iptables -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT |
| 58 | iptables -A INPUT -m state --state NEW -p tcp --dport 2134 -s 213.227.67.33 -m comment --comment "BetaSoft" -j ACCEPT |
| 59 | iptables -A INPUT -m state --state NEW -p tcp --dport 443 -j ACCEPT |
| 60 | iptables -A INPUT -p icmp --icmp-type 8 -j ACCEPT |
| 61 | |
| 62 | iptables -P INPUT DROP |
| 63 | iptables -P FORWARD DROP |
| 64 | }}} |
| 65 | |
| 66 | Zapisanie aktualnych reguł firewall'a do pliku |
| 67 | |
| 68 | {{{ |
| 69 | iptables-save > /etc/iptables.rules |
| 70 | }}} |
| 71 | |
| 72 | Wczytywanie reguł firewall'a z pliku |
| 73 | |
| 74 | {{{ |
| 75 | nano /etc/network/interfaces |
| 76 | }}} |
| 77 | |
| 78 | {{{ |
| 79 | auto eth0 |
| 80 | iface eth0 inet static |
| 81 | |
| 82 | pre-up iptables-restore < /etc/iptables.rules |
| 83 | }}} |
| 84 | |