Deputy Prime Minister Barnaby Joyce has rejected the policies of senator-elect Pauline Hanson and the One Nation party, after a Coalition backbencher suggested banning Muslim immigration from areas considered hotspots of "violent extremism".

Key points: Barnaby Joyce says many religions have "lunatic fringe"

Barnaby Joyce says many religions have "lunatic fringe" George Christensen says Muslim immigration ban from extremism hotspots could be good for national security

George Christensen says Muslim immigration ban from extremism hotspots could be good for national security Joyce "not into" banning people based on their beliefs

Mr Joyce criticised One Nation's calls to ban Muslim immigration, saying: "What happens if we turn that on its head and start banning people because they're Catholics or because they're Protestants or because they're Jewish?"

"I'm not into banning people on the premise of their belief. How they see their god is completely and utterly their personal reason," Mr Joyce told Sky News.

He also said he was opposed to Ms Hanson's calls for security cameras in mosques.

"If you can put them in mosques, then when I go to mass we're going to have one in a Catholic church?" Mr Joyce said.

"Every group has their ratbags, even Catholics. We had, in the past, the IRA (Irish Republican Army) but if someone says every Catholic is a member of the IRA, I'd say no.

"They have nothing to do with the religion that I practise. Islam at the moment also has a lunatic fringe."

Queensland MP George Christensen has defended Ms Hanson's stance against Islam, saying it reflected the views of some voters who were concerned about terrorist attacks carried out by extremists.

While he said he did not agree with Ms Hanson's policy of banning all Muslim immigration, he said a more targeted approach of stopping travel from extremist hotspots would be more measured.

"It worries them [voters], and I know that Pauline might for instance say the reaction to that is that we should ban Islamic immigration," Mr Christensen said.

"I disagree with that, but that's her right to actually suggest that.

"There could be a measured approach where we … ban immigration from countries where there is a high level of radicalism and violent extremism, and that would be taking the precautionary principle and putting that into play when it comes to national security."

George Christensen says many Hanson voters agreed terrorism was a concern. ( AAP/ ABC TV )

Ms Hanson's views on Islam dominated ABC's Q&A on Monday night, when she was asked to explain whether her "Islamophobia" was driven by ignorance or hate.

Ms Hanson said the community was concerned about terrorism.

"People in Australia are in fear because they can't walk in the streets, they're in fear of terrorism which is happening around the world. Why? Because of Islam. Because you have the radicalisation — radicalisation is actually happening in Australia," she said.

Ms Hanson is pushing for a royal commission into Islam and a ban on new mosques in her return to politics.

Shortly after the election, Ms Hanson told reporters she wanted zero-net immigration, so the number of people coming into Australia equalled the number leaving.