Tech Support Notes

Tech Support starting Guide

This is a good starting guide for those new to technical support. It is by no means a comprehensive guide but rather a jumping off point for those that are new to system administration or need a refresher on some of the common commands and utilities you are likely to encounter. The guide is broken down in to the following Topics:

For anything marked [Work In progress - check wiki] please visit the Site To Do List - Not Currently online.

Topic 1: Firewalls [Work In progress - check wiki]

{ csf, apf, iptables, ufw, windows firewall }

Topic 2: Package Management [Complete]

{ yum, rpm, rpm2pio, apt, dpkg }

Topic 3: Networking [Work In progress - Need to complete telnet/netcat page]

{ mtr / traceroute, pathping, ipv6, nmap, telnet / netcat, netstat/ss, assigning ips, Bandwith and Speed testing }

Topic 4: DNS [Work In progress - check wiki]

{ dns, dig, host }

Topic 5: Configuration Files [Complete]

{ ssh, apache, samba, bind/named , exim, postfix, vsftpd }

Topic 6: Mysql [Work In progress - check wiki]

{ mysqlprocess list, mysqltuner, simple queries, others, others, others, others }

Topic 7: Apache [Work In progress - check wiki]

{ apache benchmark, httpdperf, optimization guides, basic troubleshooting}

Topic 8: Memory [Complete]

{ free / vmstat }

Topic 9: Process Tracking [Work In progress - check wiki]

{ ps, lsof, windows process tracking }

Topic 10: Partitions/Filesystems [Work In progress - check wiki]

{ mount, fdisk, parted, fstab, labels, uuid, lvm }

Topic 11: Drives/Devices/shares [Work In progress - check wiki]

{ samba, nfs, iscsi, nas }

Topic 12: Space and drive usage [Work In progress - check wiki]

{ du, df, inodes }

Topic 13: Logging [Work In progress - check wiki]

{ logging configuration, general system logs, plesk logs, cpanel logs }

Topic 14: Finding exploits [Work In progress - check wiki]

{ maldet, rootkit hunter, windows stuff as well }

Topic 15: Email [Work In progress - check wiki]

{ general troubleshooting, exim, qmail, postfix, spam }

Topic 16: Find Examples [Work In progress - check wiki]

{ by filetype, by permissions, by user, by size, by last modified }

Topic 17: Rescue Layer/Live Environment [Work In progress - check wiki]

{ mounting filesystem, chroot , cloning }

Topic 18: Permissions/users/groups [Work In progress - check wiki]

{ permissions, users, groups }

Topic 19: Cpanel [Work In progress - check wiki]

{ general, Moving Mysql }

Topic 20: Plesk [Work In progress - check wiki]

{ linux, windows }

Topic 21: Windows [Work In progress - check wiki]

{ BSOD dump thing, hyper-v bandwidth, others, others }

Topic 22: Freebsd [Work In progress - check wiki]

{ installing packages, networking, drive management, others, others }

Topic 23: Somewhat unsorted dumping ground [Work In progress - check wiki]

{ sed/awk, gdb, curl/wget, Compress/Uncompress files, rsync, scp, Random Bash commands/ to test/sort }