Linux Server and Workstation Configuration How To

1. Internet gateway on FreeBSD

... the size of the cache in Mb, number of first level directories, number of second-level directories in each directory of the first. cache_dir ufs /usr/local/squid/cache 50000 64 512 # Access log - path ...

2. Released TeamViewer for Linux

... Between client and server can be established a VPN connection. TeamViewer supports access with certificates and 256-bit AES algorithm encryption. TeamViewer is available as a web application. ...

3. LG and Collabora joined the Linux Foundation

... in the past two weeks to Linux Foundation joined 5 other companies: Meyer Sound, CUBRID, Parallels, Ricoh, and Linpus Technologies. Addendum: a few hours later announced that accession to the Linux Foundation ...

4. mkdir

Command mkdir Creates a directory. Syntax mkdir [options] directory_names Options -m access appoints new directory specified access rights. -p creates parent directories if they do not exist. ...

5. find

... finds files with the specified access rights. -size+nK finds files with size more than n kilobytes. -type x finds files of a given type, where x - is one of the following types:          f ...

6. cmp

... -s only returns the exit code (0 - identical files, 1 - various files, 2 -- inaccessible or missing argument). Description Command cmp compares file1 and file2. If file1 is replaced by '-' is used standard ...

7. chmod

... -v displays detailed information about changes of access rights. -R recursively changes the permissions of files in all subdirectories. Description To effectively use chmod to know how to set permissions. ...

8. How To Securing SSH Connection

...  Access control tcpwrapper configuration - /etc/hosts.allow and /etc/hosts.deny Choose a strong password Install "DenyHosts" to auto-block bad clients - Installing the "denyhosts" server which ...

9. Apache Authentication

Creating Password Create htpasswd file for current (pwd) path # htpasswd -mc .htpasswd yourusername Insert new password Create .htaccess file for current path # touch .htaccess # mcedit .htaccess Paste ...

10. Send Mail Script

... /home/david/files # echo | mutt -a /tmp/backup.tar.gz -s “daily backup of data” Jon@example.com Send Mail (another example) # echo 'GPS Server ALERT - Root Shell Access on:' `date` `who` | mail -s "Alert: ...

11. Creating Transparent Proxy With squid and iptables

... http_access allow clients http_access deny all Add iptables rules iptables -t nat -A PREROUTING -s 192.168.5.0/24 -d ! 192.168.5.1 -p tcp -m multiport --dport 80,81,82,83,88,8000,8001,8002,8080,8081 ...

12. File Server With Samba and FTP in FreeBSD

This manual describes how to create file server, where users from can access their files with samba client and FTP server, (from windows too). In this example there are two users, testa and testu. User ...

13. Default Port Numbers

...  netbios-ns 137/udp netbios-dgm 138/tcp # NETBIOS Datagram Service netbios-dgm 138/udp netbios-ssn 139/tcp # NETBIOS session service netbios-ssn 139/udp imap2 143/tcp imap # Interim Mail Access ...

14. OSI Model

... selection         2 Data Link Access to Media Frame Defines how data is formatted for transmission and how access to the network is controlled Provides error detection      ...