Testing connections to NTP-servers from cmd
I stumbled over this neat command to test NTP-connections to internal or external NTP-servers. Command: w32tm /monitor /computers:no.pool.ntp.org
Blog Archives
Searching Active Directory using wild cards
I do not often dabble in Active Directory, but today I learned something useful. Namely how to search for AD-groups and users using wildcard. A bit basic, indeed, but you learn something new every day. =) Simply go to search > Advanced > Field > Group > Name and “is (exactly)” and then use * […]
How to show mac addresses in TCPdump
Just a quick tip on how to display MAC addresses in the TCPdump utility. Simply use the “-e” switch. tcpdump -i INTERFACENAME -e Without the -e switch: [CheckPoint]# tcpdump -i bond2.100 -n 12:28:42.257902 IP 10.20.20.31.49155 > 10.254.25.116.49929: . ack 1831 win 513 12:28:42.258620 IP 10.20.20.31.49155 > 10.254.25.116.49929: P 1:286(285) ack 1831 win 513 With the […]
Scripting automatic reload of network equipment
I came across a Meru WLC that required a weekly boot, and unfortunately, there is no command to schedule reboots Nor did the customer have any Management Systems that could sort this out.
How to verify SQL connectivity on UDP ports using nmap
Most network administrators have at some point or another wished telnet worked for UDP as well as TCP. Because of UDP being a connectionless transport protocol, scanning UDP ports is a bit more tricky than issuing the command “telnet smtp.mailserver.com 25”.
svchost.exe memory hog – how to determine which service is the culprit
This post is not meant to provide the end solution, but rather to help you narrow down svchost memory hogs to specific services. Using Task Manager, you can right click the memory hogging svchost process in question and choose “Go to services”. This will produce a list with the services highlighted. From there on you […]
Command line “ip calculator” in Check Point
Check Point have a nifty function called ‘ipcalc’ which displays network address, broadcast address, netmask and netmask prefix based upon input of an IP address/netmask. Could prove useful if you need to verify broadcast and/or network address. Syntax examples: ipcalc 192.168.0.0/24 -bpmn ipcalc 192.168.0.0 -m 255.255.255.0 -bpn Gos