Archives for Networking
Smokeping – Curl vs AnotherCurl
Curl can provide us the following time report: time_namelookup time_redirect time_connect time_appconnect time_pretransfer time_starttransfer time_total To get these report time, you need to use the option -w , here...
DNS: Why i can’t create txt record for sub domain?
Please check if your subdomain is a CNAME , the DNS rule does not allow CNAME record to have other record. The fix is to use A record for...
GRE keepalives in an existing IPsec tunnel
When you setup a GRE tunnel through an existing ipsec – the keepalives should be turn off , if you turn on keepalives the tunnel will never be up...
IPsec between Strongswan on AWS and Cisco IOS behind a NAT
My Strongswan : Local IP: Elastic IP: OS: Ubuntu My WAN: – Customer grade broadband Internet – Public – connect to my fiber optics – Local...
Strongswan: allow client to access internet
2 sites vpn works well, they can see each other. but i want to send all internet from my remote sites to my strongswan including the internet. This need...
Strongswan: IPsec VPN – https error
i have 2 sites vpn between Strongswan and Cisco 1841 , the vpn works well , but there is a problem , some of ssl website could not open...
Cisco networking : access-list and access-class
When we apply an access-list to our router/switch, take this note: To apply an access list to a virtual terminal interface we must use the “access-class” command. This is...
Cisco Router: block ping from internet
Let say we have a router , it’s connected to internet via interface Fa0/1. For security reason, we don’t want internet use to ping our router. We need to...
Infoblox: DHCP doesn’t update DNS
In case a client doesn’t have DNS entry when it register with DHCP, it could be because the client just send the DHCP Renew request, DHCP renew will not...
Apache: How to force download a file using .htaccess ?
I have some videos that i want other people to download it instead of playing it on the browsers. First, i just try to upload that file to my...