dport

How do I restrict the number of connections used by a single IP address to my server for port 80 and 25 using iptables?

{ 35 comments }

How do I invert a protocol or ip address test while writing iptables based shell scripts?

{ 4 comments }

How do I configure iptables firewall under CentOS / Fedora / RHEL / Redhat Linux to allow access to the Samba server? How do I open TCP ports # 137, 138, 139 and 445 under Linux so that all Microsoft Windows machine can access files and printer on a Linux host?

{ 8 comments }

How do I install and configure ssh server and client under CentOS Linux operating systems?

{ 14 comments }

I‘m trying to get data (AXFR query) from master tinydns server to secondary DNS server using tcpclient as follows:
tcpclient -v a.ns.example.com 53 axfr-get example.com example.com example.com.tmp

But I’m getting an error which read as follows:

>axfr-get: fatal: unable to parse AXFR results: protocol error

How do I fix this problem?

{ 0 comments }