implementation of the protocol or network stack from scratch for any UNIX-like, real time or embedded operating system;

implementation of the new protocol(s) inside existing protocol stack;

implementation of the new feature/option for the existing protocol implementation;

porting of existing solution to your OS and/or product;

fixing of bugs in existing implementations;

optimisation of existing implementation;

investigation of existing solutions.

perform lookup of existing standards, practices, solutions, etc. in the Internet;

recommend the scope of functionality to be implemented for your case;

recommend/design application programming and management interfaces (SNMP, TR069, CLI, etc.) for the stack/protocol;

work with existing source code of different quality;

implement required functionality (including API and management interface) with required quality level;

provide testing with required test coverage;

provide support and customer service.

Ethernet, VLAN, bridging and switching;

IEEE 802.11 (known as WiFi/WLAN);

ATM and everything over ATM;

IPv4 and IPv6; firewalls; NAT; STUN;

IPSec;

TCP and UDP; Berkeley sockets and Winsock2;

FTP;

DHCP, BOOTP;

DNS;

SSH, SSL

routing protocols;

QoS; MPLS; RSVP;

iSCSI;

VoIP: SIP;

UPnP;

IGMP;

network management protocols (SNMP v1/2/3, TR069).