UQ Cyber Squad 0x03 Shells

Introduction 0x03 Shells session presented by the UQ Cyber Squad. Access via OpenVPN connection. OpenVPN configuration bundle provided during the workshop. Challenge 1 - Family Binding Time - 10pts Let’s bind together at 192.168.57.11:8297 nc 192.168.57.11 8297iduid=1002(user) gid=1002(user) groups=1002(user)pwd/home/userls -lastotal 604 drwxr-xr-x 3 user user 4096 Mar 27 06:02 .4 drwxr-xr-x 4 root root 4096 Mar 24 02:13 ..4 -rw------- 1 user user 1584 Mar 26 01:26 .

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Setting up git

Git is yet another open source version control, and seems to be the toolof choice for contemporary coding mavericks. I still prefer svn and cvs,for centralised version control, but can appreciate why some projectsmay require distributed repositories as afforded by git. Setting up a central git repository on a server is easy. You basicallysetup a user, whose home directory is used to store the repositories,and allow access to people using keys, where the user retain theirprivate key and their public key is saved as an authorised key for thegit user account.

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Denyhost 2.6 on CentOS 6.5

Denyhosts is another utility similar to fail2ban. It parses log files toidentify potential attacks against SSH services. A clear advantage thatDenyhosts has over fail2ban is the synchronisation mechanism sinceversion 2.0[1]. Denyhostspermits communication with a central server to exchange informationabout denied hosts by other Denyhosts daemons. However unlike fail2ban,it does not modify any firewall (iptables) rules, instead it relies ontcpwrapper and the hosts.deny file to block ssh access.

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