There are many commands in Linux that can be used by network utilities for system administrators to manage, troubleshoot, and debug networks on linux, some of which have been deprecated/deprecated in practice as more modern alternatives have emerged.

In many major Linux distributions, some traditional networking tools are no longer available as default pre-installed packages. For example, in RHEL/CentOS 7 and later, ifconfig, netstat and other commands are no longer installed by default, but replaced by ip and ss commands in the iproute2 toolset. Similarly, in the latest Debian and Ubuntu releases, these tools are no longer pre-installed.

Deprecated linux network commands and their replacements such as ifconfig\netstat\arp\iwconfig\iptunnel\nameif\route. All listed programs except iwconfig are in the net-tools package, which has not been actively maintained for years. So there is a huge threat. The current alternative to Net tools is iproute2, a set of utilities that control the TCP/IP network of linux forever.

Deprecated command (replace command) :

ARP (ip n);

ifconfig (ip a/ ip addr/ ip link/ IP-s/IP-stats);

iptunnel (iptunnel);

iwconfig (iw);

nameif (ip link/ifrename);

netstat (ss);

route(ip route), etc.

Deprecated iptunnel command (replace command) :

iptunnel add /change/delete/display (iptunnel a/add,ip tunnel chg/change,ip tunnel d/del,ip tunnel ls or show).

iptunnel add [name] [mode {ipip | gre | sit}] Remote [remote_addr] Local [local_addr] (iptunnel add [name] [mode {ipip | gre | siptunnel -V or -- version it | isatap | ip6in6 | ipip6 | any}] Remote [remote_addr] local [local_addr]);

iptunnel -V or -- version (not apparent);

Deprecated nameif command (replace command) :

nameif [name] [mac_address] (ip link set dev [interface] name [name].ifrename -i [interface] -n [new name]);

nameif -c [config_file] (ifrename -c [configuration file]);

nameif-s (not apparent).