All Internet Security products include antivirus and firewall protection plus various other features...that is why the package is called a suite.Security suites
So called "security suites" were first offered for sale in 2003 (McAfee) and contain a suite of firewalls, anti-virus, anti-spyware and more. They may now offer theft protection, portable storage device safety check, private Internet browsing, cloud anti-spam, a file shredder or make security-related decisions (answering popup windows) and several were free of charge as of at least 2012.
I'm not an advocate of suites. All-in-one tools and suites are filled with extra features (including "bells & whistles") which typically use more system resources than separate programs that do the same task while other suites leave a much smaller footprint. Suites tend to have varying degrees of strengths and weaknesses accorded for each feature they incorporate. Most Internet Security Suites include a Firewall, which IMO is unnecessary since the Windows built-in firewall is adequate protection and many folks also use a router. In contrast, separate tools are designed, built and maintained with a greater focus in a specific area so they are generally of better quality and more effective at what they are designed to do. This means the program's performance for that particular feature is usually superior than their all-in-one counterpart. Further, all-in-one tools generally do not allow the user as much flexibility in tailoring default settings and usage.
If you are adamant about using a suite, then I would recommend one of the following: