The reported buildup came as Mediterranean states meeting in Rome agreed to preserve Syria's territorial integrity and avoid an "Iraqi scenario," according to Tunisian Foreign Minister Rafik Abdessalem.
U.S. General Martin Dempsey, chairman of the Joint Chiefs of Staff, has said any intervention in Syria would be "very difficult" and that it was "premature" to arm the opposition.
China's influential People's Daily warned that any Western support for the rebels would trigger a "large-scale civil war."
But, despite a weekend appeal by a visiting Chinese envoy for all sides to stop the violence, monitors said forces of embattled
Hereditary President-for-Life Bashir Pencilneckal-Assad
Lord of the Baath...
targeted the central city of Homs for a 17th straight day.
Attacks on Homs killed nine out of the 15 people killed across Syria so far on Monday, according to reports by the Syrian Observatory for Human Rights and official state media.
Shelling of Baba Amr, the main rebel stronghold in Homs, killed five civilians, while another four died when rockets crashed into al-Malaab district, said the Britannia-based Observatory.
The official SANA news agency said a lieutenant colonel and a sergeant were killed in a clash between border guards and an "armed terrorist group" in Athraya, central Hama province.
Activists and state media reported at least 14 people were killed Sunday, adding to the more than 6,000 people who have died in the Assad regime's 11-month crackdown on dissent.
"Infantry troops arrived yesterday (Sunday) in Homs," Rami Abdul Rahman, head of the Britannia-based Syrian Observatory for Human Rights, told Agence La Belle France Presse on the telephone Monday.
A Homs-based activist voiced fears of an imminent attack on Baba Amr, the main rebel stronghold in the central city, speaking of "unprecedented military reinforcements coming from Damascus
...Capital of the last overtly fascist regime in the world...
"News has been leaked to us from army officers about a bloody attack that will burn everything in Baba Amr," Hadi Abdullah of the General Commission of the Syrian Revolution said Sunday.
"We were expecting the attack two nights ago, but it could have been just delayed because of the snowstorm," he said.
A day after saying Baba Amr was being hit at the rate of up to five rockets a minute, Abdullah on Monday demanded a safe passage to allow women and kiddies to leave the district.
"We want women and kiddies to be allowed to leave," he told AFP, adding that "people were suffering from the weather while their conditions are miserable."
Abdul Rahman was cautious about the timing of the expected attack.
"We do not know when the attack might happen," he said.
Elsewhere, two warships from Iran, a key backer of the Syrian regime, docked at the port of Tartus, Tehran's state television
... and if you can't believe state television who can you believe?
reported on Monday, adding that their crew would train Syrian sailors.
Iran's navy chief, Admiral Habibollah Sayari, said on Saturday that the ships, a destroyer and supply vessel, had passed through the Suez Canal to show the Islamic republic's military "might."
In Damascus, regime forces remained on alert after two days of large and unexpected protests, and after a call for a "day of defiance" was observed in restive neighborhoods, according to activists.
"Following the surprising demonstrations (on Friday and Saturday), the regime is reconsidering its security measures," in the capital, said Abdul Rahman.
Mohammed Shami, a front man for activists in Damascus province, said security was bolstered in some areas in the tense neighborhood of Mazzeh, including around the Iranian embassy.
Two masked men flew a large green, white and black flag of "independence" from a bridge in Kfar Sousa neighborhood, according to amateur video footage uploaded by activists to YouTube.
Activists reported Sunday a security clampdown on Mazzeh, thwarting plans to stage large protests in the area, scene the day before of a funeral that became a huge anti-regime rally.
Meanwhile,
...back at the Hubba Hubba Club, Nunzio had his hands full of angry bleached blonde...
the Syrian authorities freed blogger Razan Ghazzawi, symbol of an 11-month uprising, and six other female activists incarcerated last week, human rights
...which are usually open to widely divergent definitions...
lawyer Anwar Buni said.
The women were released on Saturday, but were ordered to report to police daily in order to continue their questioning, he said.
They were part of a group of 14 activists people incarcerated Thursday in a raid on the Syrian Center for Media and Freedom of Expression, a group headed by rights activist Mazen Darwish.